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Backend Engineer Jobs in Southampton
Overview
Looking for top Backend Engineer jobs in Southampton? Haystack connects skilled backend developers with leading tech companies in Southampton, offering exciting career opportunities in web development, APIs, databases, and server-side programming. Start your search today to find the perfect backend engineering role that matches your skills and career goals.
Senior Software Engineer C#
Luxion Group Limited
Eastleigh
Hybrid
Senior
£55,000
RECENTLY POSTED
+4
  • Title:SeniorSoftwareEngineer C#
  • Department:Procode IT
  • Location: Remote Working -Commutabledistanceof our Chandlers Ford office
  • Salary:Circa £56k + Up to 15% Discretionary Bonus Scheme
  • Sponsorship:Unfortunately, we are unable to offer sponsorship for this role

Were looking for a Senior Software Engineer who loves solving complex problems and building clean, scalable systems that make a real impact.

If you enjoy solving complex engineering challenges with modern tech and clean, scalable code, then this could be the role for you!

About us

We are a leading UK technology company delivering transformative, data-driven solutions for the energy sector and beyond. With two decades of experience, we help organisations unlock the power of smart data to improve efficiency, reduce cost to serve, and enhance customer experience.

Trusted by millions of households and major industry partners, our innovative platforms and energy data management solutions support a smarter, more sustainable future. Our passionate team of problem solvers is committed to building technology that truly makes a difference, and our promise is to put customers at the heart of everything we do.

What does this role involve?

As a Senior C# Software Engineer, youll play a pivotal role in shaping and delivering a suite of cloud-native services that power our next-generation platform. Working as part of a collaborative, product-focused engineering team, youll help drive forward both innovative new projects and the evolution of our existing systems.

Youll work across a wide variety of technical challenges, from building new microservices and developing APIs, to enhancing metering products and modernising legacy applications.Theresplenty hereto keep you engaged, learning, and continually expanding your technicalskills.

Your role will go beyond hands-on coding.Youllchampion modern engineeringpracticesandplay an active role in driving technical excellence across the team.

As a senior software engineer, youll also mentor colleagues, guide technical decisions, and carry out thoughtful code reviews that help foster a culture of learning, collaboration, and high-quality engineering.

This is a chance to join a highly important team within Procode, where your expertise truly shapes the technology, we build and the value we deliver.

Who are we looking for?

Were looking for a Senior Software Engineer who brings deep technical expertise, curiosity, and a passion for building great software.

Youll have a strong command of C#, .NET Core, and AWS, enabling you to make an immediate impact and contribute confidently to our cloud-native engineering projects. Your experience working in agile, product-focused teams meansyoullnaturallyfitinto our ways of working and help us continue delivering at pace.

Were looking for someone who is driven by continual improvement, both in deepening their technicalexpertiseand advancing their personal development.

You take pride in writing high-quality, maintainable code and are always seeking opportunities to raise the bar, refine processes, and explore smarter, more effective ways of working.

As a senior software engineer, youll also be a key part of the teams development. Your ability to collaborate effectively, support colleagues, share knowledge, and guide others will help shape a culture of learning and excellence across the department.

Ifyouresomeone who enjoys solving complex problems, cares aboutmaking a real impact, and wants to play a meaningful part in shaping modern cloud-based systems,wedlove tohear from you.

And what is the technical environment?

C#, .NET Core, API’s RESTful Services, JSON, Docker, GIT (Bitbucket), OOP, SOLID, Cloud deployment and microservices, NoSQL and Oracle (SQL PL/SQL), AWS & Azure

This role will involve on-call working on a rota basis (24/7)

To be successful in this role you will be required to pass an enhanced security vetting process.

Our employees, just like our customers come from all walks of life, and were fuelled in championing diversity, inspiring an inclusive culture, and enabling an environment where you can be your authentic self.

Benefits-availablefrom day one!

  • Bonus Scheme, made up of personal and company elements.
  • Career progression, were an expanding organisation.
  • 25 days annual leave plus bank holidays.
  • Pension scheme, company contribution at 4% of your salary when you contribute 5%.
  • Our Chandlers Ford office offers access to a free, fully equipped onsite gym, along with showers and changing facilities.
  • The opportunity to win tickets to major outdoor events including, gigs and shows at arenas around the UK.
  • We offer an EV car scheme. Qualifying terms and conditions apply.
  • A health care scheme that includes dental, eye care, treatments, and diagnostics health consultations.
  • Death in service we pay three times your annual salary to your designated next of kin, giving them peace of mind should you sadly pass away during service.
  • Employee Assistance Programme with access to counselling support, legal and financial advice 24/7 365 days a year, as well as a GP line and Your Care.
  • We also offer all our staff a paid volunteering day every year.Plus,the chance to be involved in various fund-raising opportunities.

The Luxion Group comprises of the following companies Luxion Group Ltd, Utilita Energy Ltd, Luxion Sales Ltd, Utilita Field Services Ltd, Procode Technology Ltd and Canary Care Global Ltd.

Principal Software Engineer - Python
Luxion Group Limited
Eastleigh
Hybrid
Senior
£65,000
RECENTLY POSTED
  • Title:Principal Software Engineer - Python
  • Department:Procode IT
  • Location:Hybrid commutable distance of our Head Office in Chandlers Ford.
  • Salary:Circa £65k+ Up to 15%Bonus
  • Sponsorship:Unfortunately, we are unable to offer sponsorship for this role

Ifyou’rea Principal Software Engineer, who enjoys architecting complex systems, owning technical decisions, and crafting Python-powered solutions that make a real impact to customers, then this might be the role for you!

Step into a role where your technical vision truly shapes the future!

About us

We are a dynamicsoftware company.Established in 2006, with a visionofhelpingthe energy and utilities sectorsimprove customer experience and lowertheircost to serve,usingsmarter process automation.

Are you curious about what the future in tech holds? Do you havethe drive to want to deliver great solutions for customers?

If your answer is Yes, then we have an exciting opportunity as aPrincipal Software Engineer,wherewe aim to provide you with a uniquely inclusive and diverse workplace, whichshowcasesthe extraordinary in all of us, by enabling you to be the best you can be.

Our promise is to put customers at the heart of everything we do;itspart of how we live and breathe at Procode. Our hugely passionate workforce puts them at the heart of every decision we make.
What does this role involve?

As a Principal Software Engineer,youlljoin an Agile team united by curiosity, collaboration, and the belief that great technology can truly make a difference.

Youllwork with Python, AWS, and MariaDB to design and develop systems that keep pace with fast-moving business needs.

Youllmake key architectural decisions, drive technical strategy, and lead the engineering evolution of a platform used across the organisation.

Youllalso playa central rolein coaching and mentoring engineers,helping to build a culture where innovation thrives and quality is non-negotiable. And as our product team grows,youllhave the opportunity to step into leadership, guiding the next generation of engineering talent.

Who are we looking for?

We are looking for someone who brings a deep love for Python, AWS, and modern development practices into every conversation, every design session, and every piece of code.

Youveguided technical direction before, steering architectural decisions and elevating engineering standards. You enjoy uncoveringnew approaches, experimenting with fresh ideas, and finding better ways to build.

What truly sets you apart is your willingness to share what you know. You take time to mentor others, celebrate their growth, and help them navigate challenges. You recognise that great products come from great people.

Agile environments energise you. You understand how Scrum can bring structure and freedom at the same time,and you adapt quickly to changing needs.

When a complex problem appears, you never shy away. You listen, you question, you clarify, and you bring solutions that make sense to both engineers and non-technical stakeholders alike.

And what is the technical environment?
Thisincludes:Python software engineering, AWS, Docker, MariaDB, Jira,AzureDevopsGit Repositories andPipelines andAgile.

This rolemayinvolve on-call working on a rota basis (24/7)

To be successful in this role youmaybe requiredto pass an enhanced security vetting process.

Our employees, just like our customers come from allwalks of life, andwerefuelled in championing diversity, inspiring an inclusive culture, and enabling an environment where you can be your authentic self.

Benefits-availablefrom day one!

  • Bonus Scheme, made up of personal and company elements.
  • Career progression,werean expanding organisation.
  • 25 days annual leave plus bank holidays.
  • Pension scheme,companycontribution at 4% of your salary when you contribute 5%.
  • Our Chandlers Ford office offers access to a free, fully equipped onsite gym, along with showers and changing facilities.
  • The opportunity to win tickets to major outdoor events including, gigs and shows at arenasaround the UK.
  • We offer an EV carscheme. Qualifyingterms and conditions apply.
  • A health care scheme that includes dental, eye care, treatments, and diagnostics health consultations.
  • Death in service we pay three times your annual salary to your designated next of kin, giving them peace of mind should you sadly pass away during service.
  • Employee Assistance Programme with access to counselling support, legal and financial advice 24/7 365 days a year, as well as a GP line and Your Care.
  • We also offer all our staff a paid volunteering day every year.Plus,the chance to be involved in various fund-raising opportunities.

The Luxion Groupcomprisesof the following companies Luxion Group Ltd, Utilita Energy Ltd, Luxion Sales Ltd, Utilita Field Services Ltd, Procode Technology Ltd and Canary Care Global Ltd.

Senior .Net Software Engineer
Spectrum It Recruitment Limited
Fareham
Hybrid
Senior
£75,000
RECENTLY POSTED

Senior Software Developer - C#, ASP.Net, Cloud, Azure, REST API’s

Hybrid - 2 days onsite - Fareham / Southampton border

A high impact Senior Developer opportunity building complex solutions that have a direct impact on the safety and security of public services. This is your chance to make a real impact as a Software Developer, working on mission-critical systems in a cutting-edge environment.

This is great opportunity to join a global business, benefiting from corporate benefits, continuous professional development and an opportunity to work on large programmes of work in public and private sectors.

Skills Required:

6+ years experience developing ASP.NET web applications in C# using Visual Studio/Visual Studio Code

Experience creating RESTful APIs and ensuring API extensibility

Deep experience of SaaS and Cloud deployed services (Azure ideally)

Azure DevOps, CI/CD

Experience of unit and automated testing

Good knowledge of SOLID principles

MS SQL Server

Desirable Skills:

Event Driven Architecture

Containers (docker, K8s)

Security best practice (OWASP top ten)

The company is market leader in their field and offer rewarding career opportunities with progression, continuous personal development and a range of global projects.

Please get in touch asap to find out more and explore the opportunity further.

Hit apply or contact

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.

TPBN1_UKTJ

Senior .Net Software Engineer
Spectrum IT Recruitment
Fareham
Hybrid
Senior
£65,000 - £75,000
RECENTLY POSTED

Senior Software Developer - C#, ASP.Net, Cloud, Azure, REST API's Hybrid - 2 days onsite - Fareham / Southampton border A high impact Senior Developer opportunity building complex solutions that have a direct impact on the safety and security of public services. This is your chance to make a real impact as a Software Developer, working on mission-critical systems in a cutting-edge environment. This is great opportunity to join a global business, benefiting from corporate benefits, continuous professional development and an opportunity to work on large programmes of work in public and private sectors. Skills Required: 6+ years experience developing ASP.NET web applications in C# using Visual Studio/Visual Studio Code Experience creating RESTful APIs and ensuring API extensibility Deep experience of SaaS and Cloud deployed services (Azure ideally) Azure DevOps, CI/CD Experience of unit and automated testing Good knowledge of SOLID principles MS SQL ServerDesirable Skills: Event Driven Architecture Containers (docker, K8s) Security best practice (OWASP top ten)The company is market leader in their field and offer rewarding career opportunities with progression, continuous personal development and a range of global projects. Please get in touch asap to find out more and explore the opportunity further. Hit apply or contact (url removed) Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy

Principal Software Engineer - Python
Luxion Group Limited
Eastleigh
Hybrid
Senior
£65,000
RECENTLY POSTED

Title: Principal Software Engineer - Python Department: Procode IT Location: Hybrid commutable distance of our Head Office in Chandlers Ford. Salary: Circa £65k+ Up to 15 %Bonus Sponsorship: Unfortunately, we are unable to offer sponsorship for this role Ifyou're a Principal Software Engineer, who enjoys architecting complex systems, owning technical decisions, and crafting Python-powered solutions that make a real impact to customers, then this might be the role for you ! Step into a role where your technical vision truly shapes the future! About us We are a dynamic software company . E stablished in 2006, with a vision of help ing the energy and utilities sector s improve customer experience and lower their cost to serve , using smarter process automation. Are you curious about what the future in tech holds? Do you havethe drive to want to deliver great solutions for customers? If your answer is Yes, then we have an exciting opportunity as a Principal Software Engineer, where w e aim to provide you with a uniquely inclusive and diverse workplace, which showcases the extraordinary in all of us, by enabling you to be the best you can be. Our promise is to put customers at the heart of everything we do;itspart of how we live and breathe at Procode. Our hugely passionate wo rkforce puts them at the heart of every decision we make. What does this role involve? As a Principal Software Engineer, youll join an Agile team united by curiosity, collaboration, and the belief that great technology can truly make a difference. Youllwork with Python, AWS, and MariaDB to design and develop systems that keep pace with fast-moving business needs. Youll make key architectural decisions, drive technical strategy, and lead the engineering evolution of a platform used across the organisation. Youllalso playa central role in coaching and mentoring engineers,helping to build a culture where innovation thrives and quality is non-negotiable. And as our product team grows, youll have the opportunity to step into leadership, guiding the next generation of engineering talent. Who are we looking for? We are looking for someone who brings a deep love for Python, AWS, and modern development practices into every conversation, every design session, and every piece of code. Youveguided technical direction before, steering architectural decisions and elevating engineering standards. You enjoy uncoveringnew approaches , experimenting with fresh ideas, and finding better ways to build. What truly sets you apart is your willingness to share what you know. You take time to mentor others, celebrate their growth, and help them navigate challenges. You recognise that great products come from great people. Agile environments energise you. You understand how Scrum can bring structure and freedom at the same time,and you adapt quickly to changing needs. When a complex problem appears, you never shy away. You listen, you question, you clarify, and you bring solutions that make sense to both engineers and non-technical stakeholders alike. And what is the technical environment? Thisincludes: Python software engineering, AWS, Docker, MariaDB, Jira,Azure Devops Git Repositories andPipelines andAgile . This rolemayinvolve on-call working on a rota basis (24/7) To be successful in this role youmay be required to pass an enhanced security vetting process. Our employees, just like our customers come from all walks of life , and were fuelled in championing diversity, inspiring an inclusive culture, and enabling an environment where you can be your authentic self. Benefits-availablefrom day one! Bonus Scheme, made up of personal and company elements. Career progression, were an expanding organisation . 25 days annual leave plus bank holidays. Pension scheme, company contribution at 4% of your salary when you contribute 5% . Our Chandlers Ford office offers access to a free, fully equipped onsite gym, along with showers and changing facilities . The opportunity to win tickets to major outdoor events including, gigs and shows at arenas around the UK. We offer an EV car scheme. Qualifying terms and conditions apply . A health care scheme that includes dental, eye care, treatments, and diagnostics health consultations. Death in service we pay three times your annual salary to your designated next of kin, giving them peace of mind should you sadly pass away during service . Employee Assistance Programme with access to counselling support, legal and financial advice 24/7 365 days a year, as well as a GP line and Your Care. We also offer all our staff a paid volunteering day every year. Plus, the chance to be involved in various fund-raising opportunities. The Luxion Group comprises of the following companies Luxion Group Ltd, Utilita Energy Ltd, Luxion Sales Ltd, Utilita Field Services Ltd, Procode Technology Ltd and Canary Care Global Ltd. TPBN1\_UKTJ

Full Stack Developer - AI-Ready
Spectrum It Recruitment Limited
Southampton
In office
Mid
£65,000
RECENTLY POSTED
+1

AI is changing how software is built - join a team leveraging its capabilities.

Full Stack Developer - AI-first approach

  • Location - Onsite in Southampton, Hampshire.
  • Tech - JavaScript, TypeScript, AI
  • Salary circa £55,000 - £65,000

This is your opportunity to join a growing digital technology specialist as a Full Stack Developer using AI daily to improve speed, quality and customer outcomes. This role is ideal for someone who is comfortable moving between frontend, backend, data, and web, and who is already using AI tools as part of their day-to-day development workflow.

You’ll be working in a pragmatic, collaborative environment where developers take ownership of features from concept through to deployment, and where modern tooling and AI-assisted development are actively encouraged.

What You’ll Be Doing

  • Building and maintaining features end-to-end, from UI through to APIs, databases, and deployment
  • Working across multiple parts of the stack rather than specialising in a single layer
  • Contributing to technical and architectural decisions
  • Using AI-assisted development tools to support coding, testing, documentation, and delivery
  • Helping improve development practices as tools and technologies evolve

What We’re Looking For

  • Experience with a modern frontend framework (React, Vue, Svelte or similar)
  • Backend development experience in at least one language (Node.js/TypeScript, Python, Go, C# or similar)
  • Experience working with APIs, relational databases, and cloud environments
  • Familiarity with CI/CD, containers, and modern deployment practices
  • Ability to think about systems holistically, including performance, security, and reliability

AI & Modern Development

  • Practical experience using Claude for programming efficiency and tools such as GitHub, Copilot, Cursor, or similar
  • Understanding of where AI adds value in the software development lifecycle
  • Interest in emerging areas such as LLM APIs, RAG, or automation is beneficial but not essential

If you’re a developer who enjoys working across the full stack, solving challenging problems, and using AI to improve how software is built, we’d love to hear from you.

Please contact Tom Rayner on 02380 765 808 or email

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.

Developer
Deerfoot Recruitment Solutions
Southampton
Hybrid
Junior - Mid
£55,000
RECENTLY POSTED

Software Developer Southampton (Hybrid - 1 day on-site) Up to £55,000 | Full-time | Permanent

Join a fast-growing global B2B company following a successful year. Known for a positive culture and strong staff retention, they offer genuine career progression and exciting project work.

The Role:

  • Develop web applications and REST APIs using NodeJS, JavaScript, and MySQL
  • Support cloud infrastructure (AWS desirable)
  • Troubleshoot production issues
  • Collaborate across teams to deliver business solutions
  • Maintain high standards of code quality and security

Requirements:

  • Proven server-side development experience
  • Strong NodeJS and SQL skills
  • Cloud/AWS experience beneficial
  • Strong communication and teamwork skills

Benefits: 26 days holiday + bank holidays, private healthcare, enhanced pension, car discounts, wellbeing support, training and progression.

Apply now to take the next step in your development career

Deerfoot Recruitment Solutions Ltd is a leading independent tech recruitment consultancy in the UK. For every CV sent to clients, we donate £1 to The Born Free Foundation. We are a Climate Action Workforce in partnership with Ecologi. If this role isn’t right for you, explore our referral reward program with payouts at interview and placement milestones. Visit our website for details. Deerfoot Recruitment Solutions Ltd is acting as an Employment Agency in relation to this vacancy.

Coding Trainee Placement Programme
Coding Jobs at ITOL Recruit
Multiple locations
Remote or hybrid
Graduate
Private salary
RECENTLY POSTED

Please note this is a training programme with career placement and fees apply

If you are looking to progress a career in computer programming or web development, then this training and placement programme is made for you?

Skills shortages in the IT sector are driving the need for qualified, entry-level career seekers and career changers.

All you need is a desire to work hard and invest some time and money in yourself to build the foundations for a new career.

We help you start your career journey in programming by firstly ensuring you have the necessary industry recognised certifications and skills required to build a career.

We ensure you market yourself properly through a structured career driven cv and LinkedIn profile highlighting your skills, any experience, and relevant transferable skills from other roles.

Finally, our tutors will help you create a credible portfolio to demonstrate your skills and abilities to potential new employers.

We have many years of experience in helping graduates find their first roles in top UK companies and organisations who need to employ entry-level qualified programming staff that can hit the ground running with up-to-date skills gained from this programme.

The programme is specifically designed for individuals with none or limited experience but a real desire to start a career. Therefore, please do not apply if you are already an experienced programmer.

Whether you are working full-time, part-time or are unemployed, this package has the flexibility to be completed at a pace that suits you and can be completed in as little as a few weeks or a few months (see steps 1 to 4 below). Study timings are approximate and assume you can study for a minimum 5 hours per week. Training times will be reduced if you are able to invest more time each week.

Stage 1 Learn HTML and CSS ( up to 12 weeks)

The first step is completing a selection of professional and industry-recognised courses. We have carefully selected these courses to give you the most out of both your learning and employment journey.

  • HTML Essentials ( up to 6 weeks)
  • CSS Essentials ( up to weeks)

Training is delivered through multimedia rich video tutorials, presentations and quizzes using an online portal enabling you to study online from anywhere you choose. You will also be assigned an expert tutor and a support mentor who will work with you 1-2-1 or in group sessions to provide additional training and support.

Once the HTML & CSS courses are complete, your trainer will move you forward to the next stage.

Stage 2 Additional Online Training ( up to 12 weeks)

The second step includes a selection of more advanced courses to get you up to speed for what is required and relevant for many entry level programming roles and help you get a step ahead.

  • Learn the Command Line ( 1.5 weeks)

  • Learn Git & GitHub ( 1.5 weeks)

  • Learn JavaScript ( 1.5 weeks)

  • Learn Python 3 ( 1.5 weeks)

JavaScript forms the foundation of almost everything you see on the Internet. Therefore, this is an essential addition language in building your programming and development foundation.

Python is a highly versatile programming language and due to its relatively easy to understand commands now one of the most common programming languages used. You can use it for both small and complex tasks, and it is used across many different industries broadening your scope of opportunity.

Step 3 - Building a Portfolio Website Project (1 week)

Your tutor will provide you with some exercises and guidelines to help you build your own personalised portfolio. Having a strong portfolio to which demonstrates and showcases your range of skills and ability is essential within a programming career.

In addition, we will now provide additional Study Courses for your continued development and broadening of your skills. Completion of these course is voluntary but recommended.

  • AWS Certified Cloud Practitioner
  • Microsoft Certified: Azure Administrator Associate

Step 4 Entry Level Coding placement

We will now work with you to help you secure your first role in a role utilising your new skills in a coding, programming, or web development role.

There are many entry level roles where your newly learned skills can be applied meaning a vast array of opportunities are now available to you. Examples of some of these are listed below: -

  • Junior Developer
  • Website Support Developer
  • Junior Web Developer
  • Content Editor
  • Wordpress Developer
  • Junior Software Developer
  • Junior Front or Back End Development
  • Development Support

We have been helping career changers and new career seekers gain new careers since 2009 and we are a CompTIA Gold Partner, accredited by the BCS (Chartered Institute of IT/ British Computer Society) to ensure we provide the highest levels of training. We also have a 4.9 Trustpilot rating and numerous testimonials available on our website.

Our money back Job Guarantee

Due to our success and confidence in the results we deliver, and the skills shortage for entry-level coding staff we guarantee you will secure a job upon completion of your study programme, or we will refund you 100% of your course fees back. This is subject to our terms of learning/ terms of business.

Qualification for this programme?

To ensure we maintain a high level of support for our candidates, we limit spaces to this programme.

Apply before the deadline and one of our consultants will speak with you to check your eligibility for the programme.

Lead Software Engineer
Stratospherec Ltd
Fareham
In office
Senior
£65,000 - £75,000
RECENTLY POSTED
+3

Lead Software Developer - Whiteley, Salary - £65000 to £75000 My client are a Financial services company based in Fareham. They are looking for a Senior/Lead Software Developer with skills in ASP.Net, MVC, and C#. My client are looking for a Tech Lead Developer with hands on experience in Microsoft Technologies, ASP.Net & MVC .NET Core and who can be hands on with coding as well as be the Technical Lead of a small development team. This role is more focused on Tech Lead, Mentoring and Software Development, than people management and team leading. This role is paying up to £75k (depending on experience) and is on-site full-time. Skills needed for this role: • 8 plus experience in C# using .NET Framework (4.8+ - ASP.NET MVC, ASP.NET Web API and Web Forms, Windows Services) • Experience in using .NET 8 (Razor, Razor Pages, Web API) • Experience in working with ORMs (Entity Framework/Entity Framework Core preferred) • Intermediate level experience using Source Control (GIT preferred) • Intermediate level experience in using and coding SQL Server, Stored Procedures and T-SQL • Experience in working in a collaborative commercial development environment • Experience with configuring Windows Server and IIS This role is 5 days a week in the office. If this sounds like it might be of interest, then please apply with your CV

Full Stack Developer - AI-Ready
Spectrum IT Recruitment
Southampton
In office
Mid
£55,000 - £65,000
RECENTLY POSTED
+1

AI is changing how software is built - join a team leveraging its capabilities.

Full Stack Developer - AI-first approach

  • Location - Onsite in Southampton, Hampshire.
  • Tech - JavaScript, TypeScript, AI
  • Salary circa 55,000 - 65,000

This is your opportunity to join a growing digital technology specialist as a Full Stack Developer using AI daily to improve speed, quality and customer outcomes. This role is ideal for someone who is comfortable moving between frontend, backend, data, and web, and who is already using AI tools as part of their day-to-day development workflow.

You’ll be working in a pragmatic, collaborative environment where developers take ownership of features from concept through to deployment, and where modern tooling and AI-assisted development are actively encouraged.

What You’ll Be Doing

  • Building and maintaining features end-to-end, from UI through to APIs, databases, and deployment
  • Working across multiple parts of the stack rather than specialising in a single layer
  • Contributing to technical and architectural decisions
  • Using AI-assisted development tools to support coding, testing, documentation, and delivery
  • Helping improve development practices as tools and technologies evolve

What We’re Looking For

  • Experience with a modern frontend framework (React, Vue, Svelte or similar)
  • Backend development experience in at least one language (Node.js/TypeScript, Python, Go, C# or similar)
  • Experience working with APIs, relational databases, and cloud environments
  • Familiarity with CI/CD, containers, and modern deployment practices
  • Ability to think about systems holistically, including performance, security, and reliability

AI & Modern Development

  • Practical experience using Claude for programming efficiency and tools such as GitHub, Copilot, Cursor, or similar
  • Understanding of where AI adds value in the software development lifecycle
  • Interest in emerging areas such as LLM APIs, RAG, or automation is beneficial but not essential

If you’re a developer who enjoys working across the full stack, solving challenging problems, and using AI to improve how software is built, we’d love to hear from you.

Please contact Tom Rayner on (phone number removed) or email (url removed)

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.

Software Engineer
University Of Southampton
Southampton
Remote or hybrid
Junior - Mid
£40,000
RECENTLY POSTED

Section : Service Delivery Location : 1 Guildhall Square Salary : £36,636 to £44,746 Per Annum Full-Time Fixed-Term until 31/07/2027 Closing Date : Friday 13 March 2026 Interview Date : To be confirmed Reference : 3346026JF We are undertaking a technical revamp of our website and are looking for three software engineers to join us to help with the transformation. This is an exciting time to be joining the University of Southampton as we are looking to rebuild, consolidate and rearchitect large parts of our sites to meet best practices for technical design, content and accessibility. About the Role These roles will work across our website estate, looking to consolidate platforms as well as improving technical debt, design and reliability. We are looking for a range of technical skill sets from Linux and cloud platforms experience through to frontend and dedicated Drupal and PHP development. If you have any or all of these, then this role may be for you. What youll do - Work with the team to define, analyse and resolve technical backlog - Develop static and data-driven solutions to improve and expand the current offerings on the website - Proactively work with our content design and user experience team to define how the website should function - Develop tests and documentation for everything you do What youll bring - Strong experience of at least one of the following: Drupal 10 software backend and frontend development Frontend development, including HTML, CSS, JavaScript and ideally Vue.js Linux and Azure platform management - The ability to present your ideas and your specialist area to a wide and potentially non-technical audience We dont expect one person will have all of the skills above, however, we will be looking for a team, including our current developers, which covers all of these. About the University The University of Southampton is a research-driven institution, home to some of the worlds leading minds, expanding our knowledge and passing it on to future generations. iSolutions is the Universitys IT support service whose 230+ staff support the delivery of the Universitys research and education activities as well as the usual business operations. We would love you to join us and help change the world for the better. The University of Southampton promotes a healthy work life balance with generous holiday allowance (30+ days), defined benefit pension, flexitime and flexible working, generous parental leave and childcare provision. For more information on our benefits, please visit our human resources pages. This role offers remote working possibilities, but there is an expectation that the successful candidates will be able to travel to our office at Guildhall Square or one of our other campuses in Southampton for occasional meetings and team events. We are committed to equality, diversity and inclusion and welcome applicants who support our mission of inclusivity. Apply by 11.59 pm GMT on the closing date. For assistance, contact Recruitment, quoting the job number. TPBN1\_UKTJ

Lead Software Engineer
Stratospherec Ltd
Fareham
In office
Senior
£65,000 - £75,000
+3

Lead Software Developer - Whiteley, Salary - £65000 to £75000

My client are a Financial services company based in Fareham. They are looking for a Senior/Lead Software Developer with skills in ASP.Net, MVC, and C#.

My client are looking for a Tech Lead Developer with hands on experience in Microsoft Technologies, ASP.Net & MVC .NET Core and who can be hands on with coding as well as be the Technical Lead of a small development team. This role is more focused on Technical Leadership, Mentoring and Software Development, rather than people management and team leading.

This role is paying up to £75k (depending on experience) and is on-site full-time.

Skills needed for this role:

• 8 plus experience in C# using .NET Framework (4.8+ - ASP.NET MVC, ASP.NET Web API and Web Forms, Windows Services)
• Experience in using .NET 8 (Razor, Razor Pages, Web API)
• Experience in working with ORMs (Entity Framework/Entity Framework Core preferred)
• Intermediate level experience using Source Control (GIT preferred)
• Intermediate level experience in using and coding SQL Server, Stored Procedures and T-SQL
• Experience in working in a collaborative commercial development environment
• Experience with configuring Windows Server and IIS

This role is 5 days a week in the office.

If this sounds like it might be of interest, then please apply with your CV!

Senior Software Engineer
JAM Recruitment Ltd
Multiple locations
Hybrid
Senior
£69/hour

Senior Software Engineer x 2

Portsmouth (Hybrid working)

68.55 Inside IR35

12 month contract

About the Role

We are seeking 2 highly skilled and motivated Senior Software Engineers to join a growing engineering team. This is an opportunity to work on mission-critical systems that support national security, advanced defence platforms, and next-generation technologies.

As a senior member of the team, you will play a key role in designing, developing, and delivering high-integrity software solutions within a secure and collaborative environment.

What you’ll be doing:

  • Designing, reviewing, developing, testing, documenting, configuring and delivering software products to the agreed standards and procedures using the specified tools, within schedule and estimates
  • Resolving the complex challenges, issues and faults associated with installation, commissioning, operation and performance of systems
  • Providing specialist technical advice and guidance to other professionals, technician engineers and/or customers, and works with a high degree of technical autonomy
  • Testing software products sufficiently to ensure software product quality is maintained and minimal or no re-work is required
  • Investigating and resolving issues and problems raised during any stage of the development lifecycle, including software and system integration, qualification, and in-service trials
  • Production of appropriate technical documentation
  • Communicating effectively, identifying early potential risks, seeking clarification and providing feedback to team members and leadership
  • Supporting estimation of development activities

Your skills and experiences:

  • BEng/BSc in Computer Science or similar software qualification
  • Experience with all phases of the software development lifecycle
  • Excellent software coding, integration and testing skills
  • Extensive knowledge of programming languages, C++, C# and Ada highly desirable
Senior Software Developer
Spectrum IT Recruitment
Southampton
Hybrid
Senior
£65,000 - £70,000
+4

C#, ASP.Net, Azure, REST API’s

Hybrid - 2 days per week in the Southampton Office

Join a global tech leader where innovation, high performance, and career growth are at the heart of everything they do. This is your chance to make a real impact as a Software Developer, working on mission-critical systems in a cutting-edge environment.

This is great opportunity to join a global business, benefiting from corporate benefits, continuous professional development and an opportunity to work on large programmes of work in public and private sectors.

Skills Required:

  • Solid experience developing ASP.NET web applications in C# using Visual Studio/Visual Studio Code
  • Experience creating RESTful APIs and ensuring API extensibility
  • Cloud experience (Azure, AWS)
  • Azure DevOps
  • Experience of unit and automated testing using tools such as NUnit, Jasmine and Selenium
  • Good knowledge of SOLID principles

Desirable Skills:

  • Containers (docker, K8s)
  • Security best practice (OWASP top ten)
  • OpenIDConnect/Identity server
  • Micro service architecture
  • MS SQL Server
  • Azure DevOps, TeamCity
  • Infrastructure as Code (Bicep, ARM templates, Terraform)

Benefits

Medical Cover

Death in Service

Hybrid Working

Shopping Vouchers

GP Helplines

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.

Senior Backend Developer
Spectrum IT Recruitment
Fareham
Hybrid
Senior
£45,000 - £60,000
+4

Senior Backend Engineer (PHP) - Fareham - £60k + bonus and benefits

(office based for the first 3 months and then hybrid thereafter)

Tech: OOP, PHP, MySQL, GitFocus: TDD, Agile, systems optimisation & Greenfield developmentBonus: Kubernetes, AWS/GCP, Docker

An exciting new opportunity for a Senior Backend Engineer to join an entrepreneurial business based in Fareham.

Working within a dedicated LAMP environment and reporting to the project manager, you will be helping to plan and develop the product and its internal driven websites, data migration and help with support and maintenance of security and storage services.

This innovative technology company have several brands specialising in a variety of high tech solutions including security, data backup and cloud storage platforms. You will be using latest release PHP and web technology including XHTML, CSS, jQuery and Agile/Scum methodology.

The work is aimed at more back end development with an emphasis on Agile processes, systems optimisation, TDD and embracing modern development practices. The company also uses PHPUnit / Selenium to ensure high standards of development.

Desired skill set that includes:

  • OOP
  • PHP5+
  • MySQL
  • Git

Beneficial Skills:

  • Kubernetes
  • Google Cloud / AWS
  • Docker
  • Load Balancing
  • TDD
  • Code Review

The company offer an unrivalled volume of new projects, Greenfield development and the opportunity to work with and learn from some of the sharpest developers in the area.

On top of a competitive salary the company offer some fantastic financial and lifestyle benefits including; free access to local gym and health spa, onsite chef (free cooked breakfast & lunch!), childcare vouchers, cycle to work scheme, pension, BUPA healthcare.

To be considered for this position please send your CV to or call

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.

Backend Software Engineer
Sanderson
Hampshire
Remote or hybrid
Mid
£50,000 - £80,000

You will play a key role in designing, developing, and supporting high-performance software solutions within secure and mission-critical environments. You’ll work closely with multidisciplinary teams to deliver reliable, scalable, and maintainable systems that meet demanding operational requirements. This role will involve contributing across the full development lifecycle, from early design and implementation through to deployment and long-term support, using modern cloud-native and DevOps practices.

Key Responsibilities

  • Design, develop, test, and maintain secure, high-performance backend services using modern programming languages.
  • Write clean, efficient, and maintainable code with a strong focus on reliability, performance, and security.
  • Translate solution architectures and business requirements into detailed technical designs and implementations.
  • Build, deploy, and manage containerised applications on Kubernetes using Helm and continuous deployment tools.
  • Support Agile delivery by contributing to sprint planning, backlog refinement, and user story development.
  • Produce clear, accurate, and high-quality technical documentation in line with agreed standards.
  • Participate actively in Agile ceremonies, including stand-ups, planning sessions, reviews, and retrospectives.
  • Monitor live systems, investigate performance or reliability issues, and implement fixes and enhancements.
  • Collaborate with DevOps and platform teams to improve automation, testing, and deployment pipelines.
  • Contribute to prototyping, experimentation, and the development of innovative technical solutions.
  • Ensure compliance with organisational processes, quality standards, and security requirements.
  • Support continuous improvement through code reviews, knowledge sharing, and adoption of new technologies.

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

Back End Software Engineer
IO
Romsey
Hybrid
Mid - Senior
£45,000 - £65,000
+6

Software Engineer (Backend) Hybrid/Romsey Up to £65,000 per annum (DOE) + Generous Benefits package iO Associates has partnered with a R&D client specialising In Defence, and National Security, who is looking for a Backend Software Engineer to build high-speed, mission-critical systems for our National Security. You'll design, develop, test, and deploy modern backend services that connect physical and digital systems, working with Go, Kubernetes, and cloud‑native tooling to deliver reliable analytics pipelines. What they're looking for: Building high‑performance backend services in Go. Shipping containerised apps to Kubernetes with Helm and ArgoCD. Turning concepts into robust technical designs. Shaping work in an Agile team through epics, stories, and sprint rituals. Creating clear, concise technical documentation. Monitoring live systems and fixing issues before they become problems.Skillset required: Strong experience with Go or Python. Solid DevOps grounding: Docker, ArgoCD, GitLab CI. Real‑world Kubernetes deployment experience with Helm. A modern engineering mindset and familiarity with Agile delivery.Additional skillset that was would advantageous for the role: Redis Robot Framework Prometheus / Thanos / Grafana NATS, Qpid, Kafka Linux networking AWSDue to the nature of the work, the client requires you to be eligible to obtain a Security Clearance, with the view of obtaining DV in the future. If this role is of interest, apply to the link for consideration

Software Engineer
Matchtech
Portsmouth
Hybrid
Graduate - Junior
£50,000 - £70,000

About the Role:
We are seeking talented Software Engineers at various experience levels to join our UK-based software development team. The successful candidates will design, implement, and maintain high-quality software solutions in an agile environment. You will work primarily in C++ using modern tools and open source frameworks, contributing to innovative software for advanced navigation and important systems.

Key Responsibilities:

Capture and evaluate technical requirements, estimating delivery timescales and milestones.

Design, implement, and maintain software across back end, communication infrastructure, and client-server applications.

Develop front-end graphical user interfaces.

Conduct software testing, including unit tests and simulations; document results.

Evaluate and recommend new technologies, tools, and processes to maintain high standards of software quality.

Collaborate with team members and stakeholders to ensure timely delivery of projects.

Essential Skills & Experience:

Proficiency in C++ and object-oriented programming.

Strong debugging, fault isolation, and problem-solving abilities.

Knowledge of data structures, algorithms, and software design patterns.

Experience with code configuration management systems (e.g., Subversion).

Understanding of network programming, data serialization, and database design/administration.

Front-end UI design and development experience.

Familiarity with component-based development concepts (e.g., SOA, UI plugins).

Ability to develop communication links to third-party sensors or software applications (e.g., cameras, radar trackers).

Effective collaboration within agile (SCRUM) teams; ability to work with initiative.

Commitment to continuous learning and keeping up to date with new technologies.

Desired Technologies:

C++, Qt Framework, QML, STL, XML, ACE, POCO, GStreamer.

Network programming (UDP/TCP).

PostgreSQL or similar database systems.

Cross-platform build tools (MPC, CMake).

Operating systems: Windows, Linux.

Experience with publish-subscribe middleware architectures such as DDS.

Education:

Degree in Computer Science or a related technical field.

Benefits:

Salary range: £50,000-£70,000 per year.

Company pension and life assurance.

Private medical insurance.

25 days annual leave plus public and bank holidays.

Flexible working hours and hybrid/remote options.

Professional development and training opportunities.

Flexible benefits including electric vehicle, cycle-to-work scheme, and tech vouchers.

Option to trade up to 5 days of annual leave

GPU Software Engineer
Sanderson Recruitment
Portsmouth
Hybrid
Mid - Senior
£550/day

£550/day Inside IR-35

Portsmouth - 3 days per week on site

Initial 4 month contract

We’re looking for a Software Engineer to work within a Space Systems Engineering team, developing custom parallel algorithms and accelerating the processing of large-scale imagery and data on GPU platforms.

Key technical skills:

C++ development and GPU programming frameworks

Parallel programming concepts and GPU architecture

Linux systems engineering

Profiling and debugging tools for GPU code

What you’ll be doing:

Designing and implementing parallel algorithms for GPUs where existing libraries aren’t sufficient

Building GPU-ready code for vectorisation, parallel execution and large-scale data processing

Offloading CPU-heavy imaging, simulation or ML workloads onto multi-GPU Linux systems

Producing benchmarks, validating performance gains and ensuring numerical correctness

Experience with GPU acceleration in gaming or AI development is also relevant.

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason , please let us know when you apply or talk to the recruiters directly so we can support you.

TPBN1_UKTJ

Senior Backend Developer
Spectrum IT Recruitment
Fareham
In office
Senior
£45,000 - £60,000
+4

Senior Backend Engineer (PHP)

  • OOP, PHP, MySQL, TDD

  • Fareham, Hampshire. This is an in office role.

  • Salary circa 60,000 plus benefits

An exciting new opportunity for a Senior Backend Engineer to join an entrepreneurial business based in Fareham.

Working within a dedicated LAMP environment and reporting to the project manager, you will be helping to plan and develop the product and its internal driven websites, data migration and help with support and maintenance of security and storage services.

This innovative technology company have several brands specialising in a variety of high tech solutions including security, data backup and cloud storage platforms. You will be using latest release PHP and web technology including XHTML, CSS, jQuery and Agile/Scum methodology.

The work is aimed at more back end development with an emphasis on Agile processes, systems optimisation, TDD and embracing modern development practices. The company also uses PHPUnit / Selenium to ensure high standards of development.

Desired skill set that includes:

  • OOP
  • PHP5+
  • MySQL
  • Git

Beneficial Skills:

  • Kubernetes
  • Google Cloud / AWS
  • Docker
  • Load Balancing
  • TDD
  • Code Review

The company offer an unrivalled volume of new projects, Greenfield development and the opportunity to work with and learn from some of the sharpest developers in the area.

On top of a competitive salary the company offer some fantastic financial and lifestyle benefits including; free access to local gym and health spa, onsite chef (free cooked breakfast & lunch!), childcare vouchers, cycle to work scheme, pension, BUPA healthcare.

To be considered for this position please send your CV to (url removed) or call (phone number removed)

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.

Senior Software Developer
Spectrum IT Recruitment
Southampton
Hybrid
Senior
£65,000 - £70,000
+4

Software Developer

C#, Asp.Net, Azure, REST API’s

Hybrid - 2 days per week in the Southampton Office

65,000 - 70,000

Join a global tech leader where innovation, high performance, and career growth are at the heart of everything they do. This is your chance to make a real impact as a Software Developer, working on mission-critical systems in a cutting-edge environment.

This is great opportunity to join a global business, benefiting from corporate benefits, continuous professional development and an opportunity to work on large programmes of work in public and private sectors.

Skills Required:

  • Solid experience developing ASP.NET web applications in C# using Visual Studio/Visual Studio Code
  • Experience creating RESTful APIs and ensuring API extensibility
  • Cloud experience (Azure, AWS)
  • Azure DevOps
  • Experience of unit and automated testing using tools such as NUnit, Jasmine and Selenium
  • Good knowledge of SOLID principles

Desirable Skills:

  • Containers (docker, K8s)
  • Security best practice (OWASP top ten)
  • OpenIDConnect/Identity server
  • Micro service architecture
  • MS SQL Server
  • Azure DevOps, TeamCity
  • Infrastructure as Code (Bicep, ARM templates, Terraform)

Please apply now or contact (url removed) for more info

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.

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Frequently asked questions
In Southampton, you can find a variety of backend engineer roles including opportunities to work with technologies such as Java, Python, Node.js, and Ruby on Rails, ranging from junior to senior levels in startups, tech companies, and established enterprises.
Common technical skills include proficiency in server-side languages (e.g., Java, Python, Node.js), experience with databases (e.g., MySQL, PostgreSQL, MongoDB), API design and development, knowledge of cloud services like AWS or Azure, and familiarity with containerization tools such as Docker.
Yes, Haystack often lists backend engineer positions offering flexible work arrangements including remote, hybrid, and on-site roles to accommodate different preferences and company policies in the Southampton area.
You can browse backend engineer job listings specific to Southampton on Haystack’s platform, create a profile, upload your CV, and apply directly through the website with just a few clicks.
Yes, Southampton has a growing tech scene with companies in sectors like maritime technology, software development, and fintech frequently hiring backend engineers. Haystack highlights these opportunities to help you find roles with top local employers.