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Looking for top HTML5 jobs? Explore the latest HTML5 developer vacancies on Haystack, your go-to IT job board. Whether you’re a front-end developer or a full-stack coder skilled in HTML5, CSS3, and JavaScript, find roles that match your expertise and advance your career today. Start your search now for the best HTML5 opportunities!
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Senior Fullstack Engineer (React, Java)
S&P Global
London
Remote or hybrid
Senior
Private salary
RECENTLY POSTED
react
java
aws
spring-boot
html5
spring
+2
About the Role:Grade Level (for internal use): 11 The Team:S&P Global corporates value stream technology team consists of geographically diversified software engineers responsible to develop scalable solutions by working directly with product development team. Our team culture is oriented towards equality in the realm of software engineering irrespective of hierarchy promoting innovation. One should feel empowered to iterate over ideas and experimentation without being afraid of failure.Responsibilities and Impact:You will enable S&P ratings business to provide best in class end-to-end analytical, commercial and customer experience by building feature rich solutions including big data engineering, analytics, business intelligence and workflow capabilities. The ideal candidate thrives in a highly technical role and will design and develop software using cutting edge technologies consisting of web applications, data pipelines, big data, machine learning and multi-cloud.
Active participation in all scrum ceremonies, follow AGILE best practices effectively.
Play a key role in the development team to build high-quality, high-performance, scalable code.
Document and demonstrate solutions using technical design docs, diagrams, and stubbed code.
Collaborate effectively with technical and non-technical stakeholders
Respond to and resolve production issues.
What we are looking for:
Minimum 5+ years of work experience in Technology (application development and production support).
Strong hands-on experience in designing, developing, testing, and successfully deploying critical and complex projects.
Advanced experience with Spring-based technologies (Spring Boot etc.)
Experience in designing and implementing REST APIs & micro services-based solutions.
Solid Knowledge of User Interface design & development using Angular, React, HTML5, XML & CSS
Working knowledge in AWS cloud (EC2, ECS, Load Balancer, Security Group, EMR, Lambda, S3, Glue, etc.)
Experience in DevOps development and deployment using containers.
Domain knowledge in Financial Industry and Capital Markets is a plus.
Bachelor’s degree in computer science, Information Systems or Engineering is required, or in lieu, a demonstrated equivalence in work experience.
About S&P Global Ratings At S&P Global Ratings, our analyst-driven credit ratings, research, and sustainable finance opinions provide critical insights that are essential to translating complexity into clarity so market participants can uncover opportunities and make decisions with conviction. By bringing transparency to the market through high-quality independent opinions on creditworthiness, we enable growth across a wide variety of organizations, including businesses, governments, and institutions.S&P Global Ratings is a division of S&P Global (NYSE: SPGI). S&P Global is the world’s foremost provider of credit ratings, benchmarks, analytics and workflow solutions in the global capital, commodity and automotive markets. With every one of our offerings, we help many of the world’s leading organizations navigate the economic landscape so they can plan for tomorrow, today.For more information, visit www.spglobal.com/ratingsWhat’s In It For You?Our Mission:Advancing Essential Intelligence.Our People:We’re more than 35,000 strong worldwide-so we’re able to understand nuances while having a broad perspective. Our team is driven by curiosity and a shared belief that Essential Intelligence can help build a more prosperous future for us all.From finding new ways to measure sustainability to analyzing energy transition across the supply chain to building workflow solutions that make it easy to tap into insight and apply it. We are changing the way people see things and empowering them to make an impact on the world we live in. We’re committed to a more equitable future and to helping our customers find new, sustainable ways of doing business. Join us and help create the critical insights that truly make a difference.Our Values:Integrity, Discovery, PartnershipThroughout our history, the world’s leading organizations have relied on us for the Essential Intelligence they need to make confident decisions about the road ahead. We start with a foundation of integrity in all we do, bring a spirit of discovery to our work, and collaborate in close partnership with each other and our customers to achieve shared goals.Benefits:We take care of you, so you can take care of business. We care about our people. That’s why we provide everything you-and your career-need to thrive at S&P Global.Our benefits include:
Health & Wellness: Health care coverage designed for the mind and body.
Flexible Downtime: Generous time off helps keep you energized for your time on.
Continuous Learning: Access a wealth of resources to grow your career and learn valuable new skills.
Invest in Your Future: Secure your financial future through competitive pay, retirement planning, a continuing education program with a company-matched student loan contribution, and financial wellness programs.
Family Friendly Perks: It’s not just about you. S&P Global has perks for your partners and little ones, too, with some best-in class benefits for families.
Beyond the Basics: From retail discounts to referral incentive awards-small perks can make a big difference.
For more information on benefits by country visit: https://spgbenefits.com/benefit-summariesGlobal Hiring and Opportunity at S&P Global:At S&P Global, we are committed to fostering a connected and engaged workplace where all individuals have access to opportunities based on their skills, experience, and contributions. Our hiring practices emphasize fairness, transparency, and merit, ensuring that we attract and retain top talent. By valuing different perspectives and promoting a culture of respect and collaboration, we drive innovation and power global markets.S&P Global has a Securities Disclosure and Trading Policy (the Policy) that seeks to mitigate conflicts of interest by monitoring and placing restrictions on personal securities holding and trading. The Policy is designed to promote compliance with global regulations. In some Divisions, pursuant to the Policy’s requirements, candidates at S&P Global may be asked to disclose securities holdings. Some roles may include a trading prohibition and remediation of positions when there is an effective or potential conflict of interest. Employment at S&P Global is contingent upon compliance with the Policy.Recruitment Fraud Alert:If you receive an email from a spglobalind.com domain or any other regionally based domains, it is a scam and should be reported to reportfraud@spglobal.com . S&P Global never requires any candidate to pay money for job applications, interviews, offer letters, pre-employment training or for equipment/delivery of equipment. Stay informed and protect yourself from recruitment fraud by reviewing our guidelines, fraudulent domains, and how to report suspicious activity here .Equal Opportunity EmployerS&P Global is an equal opportunity employer and all qualified candidates will receive consideration for employment without regard to race/ethnicity, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, marital status, military veteran status, unemployment status, or any other status protected by law. Only electronic job submissions will be considered for employment.If you need an accommodation during the application process due to a disability, please send an email to:" EEO.Compliance@spglobal.com “and your request will be forwarded to the appropriate person.”US Candidates Only: The EEO is the Law Poster http://www.dol.gov/ofccp/regs/compliance/posters/pdf/eeopost.pdf " describes discrimination protections under federal law. Pay Transparency Nondiscrimination Provision - https://www.dol.gov/sites/dolgov/files/ofccp/pdf/pay-transp_%20English_formattedESQA508c.pdf20 - Professional (EEO-2 Job Categories-United States of America), IFTECH202.2 - Middle Professional Tier II (EEO Job Group), SWP Priority - Ratings - (Strategic Workforce Planning)
Lead .NET Developer - Azure - Preston
Circle Group
Preston
Hybrid
Senior
£80,000
RECENTLY POSTED
dot-net
react
javascript
asp-net
html5
csharp
+7
Lead .NET Developer with experience in back-end C# .NET / .NET Core development, Azure and some front-end JavaScript development (Vue.js / Angular / React, etc) is required by a leading company in Preston. You should also have some development experience in the Cloud with Azure & third-party API integrationsDue to investment and a pipeline of brand-new green field work, they need a Lead Full Stack Developer to join the team. It is a true full-stack development role!! They would also take somebody stronger / has a preference for back-end development if needed. The role will involve several .NET software engineering projects, including taking an old legacy system and building a brand new one over the next 2 years.Key skills:
Experience in leading/mentoring junior and mid-level .NET software developers
Full-stack development experience in both C#.NET and JavaScript (Vue.js / Angular / React etc) with a passion for embracing new front-end technologies.
Azure experience with a good appreciation of Azure Functions, Storage Accounts, Service Bus, Application Insights, and Key Vault
Agile, SQL Server and WebAPI experience
Familiar with modern web technologies such as HTML5, CSS3, and JavaScript.
This is a fantastic chance to join & lead a software engineering team of 6 people, which is growing. You will be involved in full-stack development in an Agile environment with the opportunity to bring in new ways of working and technologies if needed. The new greenfield projects are exciting and fun to work on, and the team is constantly looking to challenge each other from a coding point of view. If you love code but want to engage with a business to help draw up requirements and take ownership of projects, then this job is for you.You will be able to be part of something special. As the Lead, you will be given so much autonomy, and it is a true green field project. Job responsibilities include:* Take the lead on projects, developing new software solutions to help the business move forward. * Be responsible for delivering high-quality solutions to specification and on time * Actively contribute to the continuous improvement process and drive efficiencies within the team ?? * Peer code reviews with more junior-level developers * Uphold good development planning and procedures * Follow industry best practices and coding standards * Optimise application performance and improve user experience through innovative front-end and back-end development techniques * Assisting junior to mid-level developers when requiredMy client is offering a starting salary between £65,000 - £80,000, depending on experience. They also provide a good benefits package, a very relaxed but dynamic working environment and a flexible hybrid working model, with no more than 2 days in the office per week (you are not tied down to the days you are in). To apply, send your CV to matthew.leach @ circlerecruitment.com or press apply now:Keywords: Lead Full Stack C #.NET Developer - JavaScript - Vue.JS - React - Angular JS - MVC - ASP.NET - .NET Core - Azure - Cloud -TDD - Docker - Preston - Blackpool - Blackburn - Bolton - Warrington - Liverpool - Wigan - ManchesterCircle Recruitment is acting as an Employment Agency in relation to this vacancy. Earn yourself a referral bonus if you refer somebody else who fills the role! We also offer an iPad if you refer a new client to us and we recruit for them. Follow us on Facebook - Circle Recruitment , Twitter - @Circle_Rec and LinkedIn - Circle Recruitment.
Full Stack Software Developer
Deerfoot Recruitment Solutions
Cowes
In office
Mid - Senior
£45,000
RECENTLY POSTED
html5
csharp
sql
Full Stack Software Developer (C# / Web / SQL Server) x 2 - up to 45K Well-established software solutions company is currently seeking two experienced Full Stack Software Developer to join its software development team based in Cowes, Isle of Wight . This opportunity is ideal for developers who want to work on mission-critical, high-quality software solutions that provide actionable insights and help organisations operate more efficiently, safely and sustainably. The successful candidate will contribute to the design and delivery of Microsoft Windows-based applications , working across the full software development lifecycle. Development of complex, enterprise-level software using C#, SQL Server and modern web technologies Strong focus on structured development processes, quality standards and best practices Opportunity to lead technically , mentor team members and influence architecture decisions Work within a stable, globally connected organisation offering long-term career growth Exposure to innovative, high-technology products and services Skills required: 3+ years’ experience as a full-stack developer in a professional software development environment Strong experience with C# and SQL Server , alongside HTML5, CSS3 and JavaScript/TypeScript Background in producing functional and design specifications , testing, release and maintenance A motivated, customer-focused developer who enjoys problem-solving and continuous improvement Salary: up to 45K Benefits: Pension contribution, bonus, healthcare, career progression and generous holiday allowance This is an excellent opportunity for an experienced Fullstack developer seeking meaningful, high-impact work within a technically strong and forward-thinking software environment. 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. TPBN1_UKTJ
Python Developer - Equity Derivatives
Pontoon
London
Hybrid
Mid
Private salary
RECENTLY POSTED
python
processing-js
react
restful
html5
unix
+1
Job Advertisement: Python Developer - Equity Derivatives - 13029Daily Rate: Negotiable via Umbrella Company Contract Length: 12 months with potential to extend Working Pattern: Full Time, Hybrid 2-3 days a week in the office Location: LondonAre you a passionate Python Developer eager to make an impact in the exciting world of Equity Derivatives? Our client is on the lookout for a dynamic mid-level developer to join their innovative team, dedicated to building a highly automated, fully Straight-Through Processing (STP) system that meets front-to-back business needs in the rapidly growing Structured Notes (SN) and Structured Products (SP) sectors.This is not just another job; it’s an opportunity to contribute to the evolution of cutting-edge technology and process automation solutions that will help drive significant growth!What You’ll Do:
Collaborate with a vibrant team including platform teams, sales, trading, structuring, and operations to achieve collective success.
Build applications, services, and tools aimed at automating pre-trade and post-trade activities, improving decision-making in the SN/SP landscape.
Optimize the Treasury workstream to enhance STP Rates and support diverse team requests.
Who You Are:
A tech-savvy individual with experience in Front Office equities derivatives systems. Previous experience with SN and SP is a bonus!
Equipped with a degree in Computer Science or a related field.
Proficient in designing and developing complex Server Side functionality in Python.
Familiar with SQL (preferably Oracle) and have basic Unix knowledge.
A self-starter who thrives in an agile environment and is adept at juggling multiple priorities.
Experienced within the financial services/banking sector
Key Responsibilities:
Gain a deep understanding of our entire technology stack.
Design and develop new features within existing Python services and create new services.
Participate in agile planning with team members and write acceptance tests in coordination with QA.
Provide Level 3 user support and engage effectively with business and platform partners.
Enhance our CI pipeline and deployment strategies.
Desired Skills:
Experience with modern web UI technologies like HTML5, React, RESTful services, and Websockets.
Knowledge of Structured Products (Notes, Warrants, Certificates) is advantageous.
Why Join Us?
Be part of the fastest-growing area in Equities Derivatives Technology.
Collaborate with talented professionals and drive significant business growth.
Enjoy a competitive daily rate that reflects your expertise and contributions.
If you’re ready to take on this challenge and make a difference, don’t hesitate to apply! Let’s innovate together and shape the future of Equity Derivatives.Apply Now!Join us in this exciting journey-your next big career move is just a click away!Please note we will be in touch within 48 hours if we have been shortlisted.Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone’s chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive. If you require reasonable adjustments at any stage, please let us know and we will be happy to support you.We use generative AI tools to support our candidate screening process. This helps us ensure a fair, consistent, and efficient experience for all applicants. Rest assured, all final decisions are made by our hiring team, and your application will be reviewed with care and attention.
Full Stack Developer
Proactive Appointments
Kent
In office
Mid - Senior
£28,000 - £30,000
RECENTLY POSTED
jquery
javascript
dot-net
sass
python
html5
+2
100% On-site positionWe are seeking a skilled Full-Stack Developer to join our clients growing technical team. This role is ideal for someone who thrives in a dynamic environment, takes a proactive approach to problem-solving, and is passionate about building high-performing digital experiences with a mobile-first mindset.As a key member of the development function, you will work across both Front End and Back End technologies, contributing to the design, build and optimisation of web applications, data integrations and reporting solutions. You will collaborate closely with internal stakeholders to deliver robust, scalable and user-centred products.Key Skills & Experience:
Strong expertise in MVC, HTML5, CSS3, and responsive design.
Experience with CSS preprocessors such as SASS or LESS.
Proficient with Server Side languages including .NET, C#, MVC, Liquid and Python.
Solid understanding of SQL Server, data modelling, cleansing and dataset preparation.
Experience supporting or developing Power BI dashboards and data visualisations.
Familiarity with APIs, automation tools and AI/ML-driven platforms.
Strong JavaScript and jQuery skills, including asynchronous handling and AJAX.
Knowledge of version control tools such as Azure DevOps.
Understanding of UX principles across online and mobile contexts.
Excellent communication skills and a systematic, organised approach to work.
If you’re driven, detail-oriented and eager to make an impact, we’d love to hear from you.Full Stack DeveloperDue to the volume of applications received for positions, it will not be possible to respond to all applications and only applicants who are considered suitable for interview will be contacted.Proactive Appointments Limited operates as an employment agency and employment business and is an equal opportunities organisationWe take our obligations to protect your personal data very seriously. Any information provided to us will be processed as detailed in our Privacy Notice, a copy of which can be found on our website
UI Developer {SaaS}
Ernest Gordon Recruitment
Rotherham
Hybrid
Junior - Mid
£35,000
RECENTLY POSTED
javascript
html5
UI Developer {SaaS}Rotherham/Hybrid£35,000 - £38,000 + Training + Progression + Company BenefitsAre you a UI or Front-End Developer looking to join a truly industry-leading software company whose products are used on a global scale and who can offer a genuinely clear and structured route for career progression?This is a rare opportunity to play a pivotal role in the continued growth of a global organisation delivering market-leading e-Procurement solutions to both public and private sector clients across more than 130 countries. Their end-to-end software suite supports every stage of the procurement lifecycle, and with ongoing international expansion, there has never been a better time to join.You’ll be joining a well-established and highly respected software business that already supports over 800 clients and more than 3 million users worldwide, as they continue to invest in their technology and expand their development team.In this role, you’ll take ownership of designing and building intuitive, responsive, and visually engaging user interfaces across a suite of enterprise-level procurement platforms. Your work will have a direct and visible impact on the experience of thousands of users around the world, giving you real ownership and influence over the final product.This role is ideal for a UI or Front-End Developer who enjoys seeing their work used at scale, wants to take real ownership of projects, and is looking for a hybrid working setup that supports a healthy work-life balance while still offering strong long-term career growth.The Role
Develop and maintain high-quality, responsive web interfaces for our SaaS platforms
Collaborate with the Marketing team to deliver seamless user experiences
Translate wireframes and mockups into functional, interactive UI components
The Person
Proven experience as a UI/Front-End Developer with a strong portfolio.
Proficiency in HTML5, CSS3, JavaScript (ES6+), and modern frameworks
Experience with responsive and adaptive design, cross-browser compatibility, and accessibility standards.
Keywords: UI, UX, User Interface, Frontend, JavaScript, HTML, CSS, Marketing, e-Procurement, SaaS, Rotherham, Hybrid, Remote, Training, ProgressionReference Number: BBBH23122If you are interested in this role, click ‘apply now’ to forward an up-to-date copy of your CV.We are an equal opportunities employer and welcome applications from all suitable candidates. The salary advertised is a guideline for this position. The offered renumeration will be dependent on the extent of your experience, qualifications, and skill set.Ernest Gordon Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job, you accept the T&C’s, Privacy Policy and Disclaimers which can be found at our website.
Cloud Application Developer
Sanderson Government and Defence
Manchester
Remote or hybrid
Mid - Senior
£70,000
RECENTLY POSTED
react
aws
javascript
nagios
nginx
git
+9
Role responsibilities:
Interacting with project roles as required, to gain an understanding of the business environment, technical context, and organisational strategic direction.
Advising our customer on the latest technologies and methodologies, designing and implementing innovative approaches to their problems using automation.
Understanding security policies and implementing solutions to satisfy security requirements.
Designing and implementing solutions which have high availability and are scalable.
Desirable Skills and Technologies:
Experience and knowledge of AWS / Azure and Azure Virtual Desktop.
Proficiency in the following languages: Python, React, Go.
Familiarity with deploying applications to cloud architecture and technologies in AWS environments.
Experience with web application services such as NGINX, Apache, JBoss.
Experience of Test Driven or Behaviour Driven development.
API development and integration (preferably using Go but not essential).
Experience with monitoring systems e.g., ELK, Nagios, New Relic, DataDog, Splunk etc.
Working knowledge of digital delivery processes and methodologies.
Working knowledge of Atlassian Toolset.
Knowledge of Javascript frontend frameworks.
Understanding of front-end technologies, such as HTML5, and CSS3.
Understanding the nature of asynchronous programming, its quirks and workarounds.
Understanding of database schemas and query languages.
Knowledge of source control technologies, e.g. Bitbucket, Git, Subversion, etc.
An understanding of how to deploy and configure AWS components to adhere to tight security requirements.
Awareness of security identity, access management and authentication using products such as ADFS, SSL/TLS Certs, OIDC, OAUTH2, Keycloak or Redhat SSO.
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.
Full Stack Software Developer
Deerfoot Recruitment Solutions Limited
Cowes
In office
Mid - Senior
£40,000 - £45,000
RECENTLY POSTED
html5
csharp
sql
Full Stack Software Developer (C# / Web / SQL Server) x 2 - up to 45K Well-established software solutions company is currently seeking two experienced Full Stack Software Developer to join its software development team based in Cowes, Isle of Wight. This opportunity is ideal for developers who want to work on mission-critical, high-quality software solutions that provide actionable insights and help organisations operate more efficiently, safely and sustainably. The successful candidate will contribute to the design and delivery of Microsoft Windows-based applications, working across the full software development lifecycle. Development of complex, enterprise-level software using C#, SQL Server and modern web technologies Strong focus on structured development processes, quality standards and best practices Opportunity to lead technically, mentor team members and influence architecture decisions Work within a stable, globally connected organisation offering long-term career growth Exposure to innovative, high-technology products and servicesSkills required: 3+ years’ experience as a full-stack developer in a professional software development environment Strong experience with C# and SQL Server, alongside HTML5, CSS3 and JavaScript/TypeScript Background in producing functional and design specifications, testing, release and maintenance A motivated, customer-focused developer who enjoys problem-solving and continuous improvementSalary: up to 45K Benefits: Pension contribution, bonus, healthcare, career progression and generous holiday allowance This is an excellent opportunity for an experienced Fullstack developer seeking meaningful, high-impact work within a technically strong and forward-thinking software environment. 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
Shopify Developer
CV Screen Ltd
Leeds
Hybrid
Junior - Mid
£40,000
RECENTLY POSTED
shopify
javascript
git
html5
Shopify Developer – Leeds (Hybrid) – £40,000 + Excellent BenefitsCV Screen is delighted to recruit for a talented Shopify Developer to join a fast-growing eCommerce agency based in Leeds. Offering a salary of up to £40,000 plus excellent benefits, this is a fantastic opportunity to join a specialist digital team renowned for building, scaling and optimising online stores for major consumer brands across the UK and Europe. You’ll play a key role in crafting high-performing Shopify solutions, collaborating closely with designers and developers in a modern, hybrid working environment. If you’re looking to take ownership of exciting projects and advance your Shopify expertise, this role is an exceptional career move.Duties & Responsibilities
Build, customise and enhance Shopify themes using Liquid, HTML, CSS and JavaScript.
Develop new site features and functionality that improve performance and user experience.
Integrate third-party tools, APIs and services to extend store capabilities.
Collaborate with designers and project teams to deliver high-quality, on-time solutions.
Test, optimise and troubleshoot websites to ensure strong performance across all devices.
What Experience Is Required
Proven experience working with Shopify development, including theme customisation and API use.
Strong front-end skills across Liquid, HTML5, CSS3 and JavaScript.
Experience with version control tools such as Git.
Salary & Benefits
Salary up to £40,000
Hybrid working (office-based a minimum of 3 days per week)
Excellent benefits package including professional development opportunities and a supportive, collaborative environment.
LocationBased in Leeds – easily commutable from Wakefield, Bradford, Harrogate, York, Huddersfield, Halifax, Barnsley, Pontefract and surrounding areas.How to ApplyPlease apply by sending your CV to Giselle Whitton at CV Screen in strict confidence.Alternate Job Titles
Frontend Developer
Shopify Theme Developer
Web Developer (Shopify)
eCommerce Developer
CV Screen Ltd acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the Privacy Policy which can be found on the CV Screen website.
Software Developer
Spectrum IT Recruitment
City of London
In office
Junior - Mid
£80,000 - £90,000
windows
javascript
dot-net
html5
csharp
typescript
+2
Software Developers required for an excellent client based in London. The successful Software Developer will join an extremely talented development team and you will be exposed to creating and maintaining our client’s own applications based around a C#/.NET/SQL Server/ASP.NET universe. Many projects are greenfield projects and allow you to make your own mark on the development process early on.You will be given the opportunity to work with some of the latest technologies possible and will be expected to produce excellent code for our clients in-house software applications and trading platform. Our client offers a very collaborative working environment with all of the development team coming from excellent educational backgrounds from across Europe. This is predominantly an office-based role. As well as very competitive salaries, our client offers a comprehensive benefits package.Skills required:C# Worked with the latest version of the .NET platform Database experience - SQL Server WPF Angular, TypeScript Excellent communication skills both written and verbal Knowledge of working with trading platforms High level aptitude for technology Education to at least a BSc level or higher in Computer Science or Mathematics from a Russell Group University or equivalent. Desirable skills:HTML5, CSS, JavaScript Multi-threaded application development Understanding of Windows technologies If you feel you have the skills and experience required for this opportunity, please contact Oliver Wilson on (phone number removed) or emailSpectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy
Technical Lead - Head of Engineering - 2 Days Peterborough or London
ZENZO DIGITAL LTD
City of London
Hybrid
Leader
£90,000
react
javascript
dot-net
asp-net
redis
terraform
+21
Our client is undertaking a bold technology transformation, modernising the systems that power one of the UKs leading media groups.Were looking for a hands-on Tech Lead moving into a Head of Engineering role or current Head of Engineering to lead this change from the front, a full-stack technologist who codes with confidence, architects with foresight, and inspires teams to deliver with purpose.Youll own the engineering direction across multiple domains; designing scalable cloud-native platforms, embedding DevSecOps excellence, and ensuring our technology foundation accelerates the business. DevSecOps would be desirable to have but so long as you have DevOps that is fine.This is a role for a technical leader who still builds, who thrives on solving complex problems, automating intelligently, and mentoring the next generation of engineers.Technology doesnt sit on the sidelines here, it drives their growth, their data, and their customer experience.Your Impact Define and execute the engineering strategy across Azure cloud, integration, and legacy modernisation, aligned to the clients long-term digital roadmap. Design and deliver cloud-native solutions that scale efficiently, perform reliably, and integrate seamlessly across business functions. Lead by example in Azure DevSecOps: create and manage pipelines (YAML), infrastructure-as-code (Bicep, Terraform), and container orchestration (AKS, Docker). Embed engineering best practice: implement CI/CD, code quality gates, automated testing, and observability from build to production. Guide platform evolution: re-engineer legacy .NET and SQL systems into modular, API-driven architectures. Build and empower teams: mentor full-stack, DevOps, and Automation Test engineers fostering autonomy, innovation, and accountability. Champion security and reliability by design: integrate compliance, performance, and monitoring into every stage of delivery. Collaborate widely: partner with Product, Data, and Infrastructure teams to ensure alignment between technology capability and commercial goals. Drive innovation: pilot emerging technologies (AI, automation, data services) that improve efficiency and insight.Your Technical ToolkitFrontend HTML5, CSS3, JavaScript (ES6+), TypeScript React.js (preferred), Angular, or Vue.js Responsive design (Bootstrap, Tailwind), state management (Redux, Context API) Front-end testing (Jest, React Testing Library, Cypress)Backend C#, ASP.NET Core / .NET 6+ RESTful and GraphQL APIs Entity Framework Core, LINQ Authentication & authorisation (OAuth2, JWT, Azure AD) Secure coding and API versioningData & Integration SQL Server, Azure SQL, Cosmos DB ORM optimisation, caching (Redis, Azure Cache for Redis) Data migration and ETL integration (APIs, pipelines)Cloud & DevSecOps Azure DevOps (Repos, Pipelines, Boards, Artifacts, Test Plans) CI/CD automation, gated releases, and environment governance Infrastructure-as-Code (Bicep, ARM, Terraform) Containerisation (Docker, AKS) and serverless (Azure Functions) Monitoring and observability (Application Insights, Log Analytics) Secrets management and vulnerability scanning (Key Vault, SonarQube, OWASP)Architecture & Design Microservices and event-driven design (Service Bus, Event Grid, Kafka) Domain-Driven Design (DDD) principles Resilient and scalable system patterns (circuit breakers, retries) Integration of legacy and modern platforms within hybrid environmentsWhat Success Looks Like 8+ years in software engineering, with deep full-stack and cloud experience. Proven record of leading engineering teams through modernisation or platform rebuilds. Hands-on mastery of Azure DevOps and enterprise-scale CI/CD, DevSecOps highly desirable Excellent architectural judgement balancing delivery speed, stability, and cost efficiency. Track record of developing high-performing, collaborative technical teams. Strong communication and leadership presence able to influence peers and executives alike. A continuous learner, passionate about automation, clean code, and scalable design.Your Journey with the company: We believe great leaders inspire by doing. From your first week, youll work alongside engineers, architects, and data specialists shaping not just what we build, but how we build it. Youll have open access to the leadership team, visibility into our transformation roadmap, and the chance to leave a lasting mark on how technology powers the business.The role can be based 2 days a week out of London (City Area) or Peterborough and the rest remote. If London then occasional trips to PeterboroughTPBN1_UKTJ
Senior GIS Developer
Stackstudio Digital Ltd.
Reading
Hybrid
Senior
£500/day - £525/day
javascript
python
html5
sql
arcgis
salesforce
Role / Job Title:Senior GIS DeveloperWork Location:Reading, UKIf Hybrid, How Many Days Required in Office?:Maximum 2 days per weekThe RoleSenior GIS Developer to design, develop, and implement advanced GIS applications and solutions. Strong expertise is required in Esri technologies, web GIS development, and system integration, with the ability to lead technical initiatives and mentor junior developers.Your ResponsibilitiesApplication Development
Design and develop GIS applications using ArcGIS Enterprise, ArcGIS Online, and ArcGIS Pro.
Build custom web GIS solutions using ArcGIS API for JavaScript, Python, and modern frameworks (React/Angular).
Integration
Integrate GIS systems with enterprise applications (ERP, Salesforce, SAP, SCADA) using REST APIs and web services.
Data Management
Work with geodatabases, optimize data models, and ensure data integrity and performance.
Automation
Develop scripts and tools for workflow automation using Python/ArcPy.
Technical Leadership
Provide guidance on best practices, architecture, and coding standards.
Mentor junior developers and collaborate with cross-functional teams.
Innovation
Stay updated on emerging GIS technologies and recommend improvements.
Your ProfileEssential Skills / Knowledge / Experience
8+ years of experience
Strong experience with Esri ArcGIS platform (ArcGIS Enterprise, ArcGIS Online, ArcGIS Pro)
Experience with Utility Network Model (UNM) and advanced GIS workflows
Proficiency in ArcGIS API for JavaScript, Python, and web development technologies (HTML5, CSS3, JavaScript frameworks)
Knowledge of geodatabase design, SQL, and spatial analysis
Familiarity with cloud GIS deployments (Azure/AWS) and DevOps practices
Excellent problem-solving and communication skills
Desirable Skills / Knowledge / Experience
Water Utilities and other utilities experience
Esri certifications (Web Application Developer, Enterprise Administration)
Knowledge of data migration and integration with enterprise systems
Senior Software Engineer Frontend
X-On Health
UK
Hybrid
Senior
£50,000
react
javascript
restful
html5
kanban
gitlab
Location: Melton (Hybrid)Working Hours: 09:00 17:30Salary: up to £50,000The purpose of this role is to solve complex business problems and technical challenges through the design and development of frontend applications. This role will contribute directly towards exciting technology opportunities in the public health sector; specifically in general practice. You will be responsible for designing, developing, and maintaining high-quality, scalable, and responsive user interfaces.Key TasksDesign and DevelopmentDesign, develop, and maintain complex, highly responsive, and user-friendly web applications using modern JavaScript frameworks (e.g. React)Drive technical design and architectural decisions for the frontend, ensuring scalability, maintainability, and securityDevelop modular, reusable components and librariesCollaborate closely with UX/UI designers to translate wireframes and design mockups into functional interfaces.Partner with other members of the development team to define and integrate necessary APIs (REST)Technical LeadershipPromote and demonstrate software engineering best practices and principlesParticipate in architectural and design discussionsStay abreast of the latest technologies and industry trendsDiagnose and troubleshoot complex technical issuesResearch and advocate for new technologies, tooling, and development processes to continuously improve the teams tech stack and efficiencyContribute to technical documentation and knowledge sharing across the teamQuality Assurance and ComplianceEnsure all applications adhere to accessibility (a11y) and cross-browser compatibility standardsWrite clean, maintainable, and well-tested code with a strong emphasis on quality and performanceConduct code reviews and provide constructive feedback to uphold team coding standards and patternsComply with X-ons Health & Safety, Data Protection, Information Security, PCI & DSP policies and procedures.Skills RequiredEssentialProven experience in designing, building, and maintaining scalable, modular, and high-performance front-end architectures (e.g., micro-frontends, design systems, component libraries)Proven experience with a major front-end framework/library (e.g. React)Experience with state management librariesExpert-level knowledge of HTML5 semantics, accessibility standards (WCAG), and modern CSS (e.g., CSS Grid, Flexbox, pre-processors like Sass/Less).Experience working with RESTful APIsKnowledge of the product development lifecycleSource control (e.g. GitLab)Strong knowledge of software design patterns and object-oriented design principlesWorking experience of unit test frameworks and test automationExcellent communication and teamwork skillsDesirableStrong expertise in Agile methodologies (e.g. Scrum / Kanban) and toolsHealthcare industry experience (NHS)VOIP call handlingBenefits25 Days Holiday plus an additional day for your birthday/equivalentCycle to Work SchemeWinter Flu JabsFree On-Site ParkingLearning and development budget with Professional Qualification Support£1,000 employee referral bonusSocial benefits (paid social events)Buy Holiday SchemeEmployee Assistance ProgramDiscount on Health InsuranceAnnual Salary ReviewEnhanced Company Sick PayMonthly pizza in the office (Hybrid employees) / coffee voucher (Remote employees)SCG mobile benefitSCG is proud to be an equal opportunities employer. We welcome applications from all parts of the community and are committed to upholding the principles of the Equality Act 2010.We are committed to supporting applicants with disabilities. We will endeavour to make necessary adjustments to ensure a fair and accessible recruitment processTPBN1_UKTJ
Lead Front-End Developer
ADLIB Recruitment
Exeter
Hybrid
Senior
£55,000
react
javascript
git
jest
graphql
html5
+5
Fast-growing, award-winning SaaS scale-up.
Vue/React, lead a small talented front-end team.
Exeter/Remote, ambitious market-leader, career development.
Were looking for a Lead Front-End Developer to join a top software business in Exeter with more than a thousand Leisure, Tourism, and Events businesses across the globe. Theyve grown significantly over the last few years and off the back of a very successful 2025, they are now looking for a hands-on Lead Front-End Developer to join the team (80% Front-End, 20% Team Leadership).2 days per week in Exeter office.What skills and experience youll need:
Mentoring, coaching experience and ability to lead a small front-end team.
Deep expertise in modern JavaScript frameworks (e.g., Vue.js, React, or Angular), happy to work with Vue.js.
Proficient in HTML5, CSS3, and responsive design best practices.
Experience working with design systems and scalable UI architecture.
Solid understanding of performance optimisation, accessibility (WCAG), and cross-browser compatibility.
Comfortable working with Git, CI/CD pipelines, and agile methodologies.
Strong communication and collaboration skills.
Desirable
Experience working with SaaS products, ticketing, or eCommerce platforms.
Familiarity with backend integration using GraphQL.
Experience with TypeScript, Vue, and similar tools.
Knowledge of testing frameworks such as Cypress, Vitest, or Jest.
Understanding of mobile/responsive UI development and/or hybrid app frameworks (e.g., Capacitor or Ionic).
What youll be doing:As Lead Developer they will look to you to lead the development and evolution of their front-end architecture across web, mobile, and POS interfaces. You will be focused on driving delivery, improving front-end performance and user experience, and ensuring design consistency and technical excellence across the product suite. Youll guide a small team of front-end developers and collaborate closely with UX/UI, Product, and Engineering stakeholders to deliver high-quality user-facing features. This a technical hands-on role where you will be seen as a role-model for promoting best practice, clean code and foster a collaborative and high-performance culture within the team. Other duties will include providing input into feature planning, product roadmaps and communicating technical progress, risks and blockers to internal stakeholders.What youll get in return:Youll receive a starting salary up to £58k and benefits including: an annual bonus scheme, a generous individual training budget per year to spend on courses or accreditations. Youll join the team with 25 days holiday plus Bank Holidays and your birthday off, but this will increase by a day a year (up to 30 days) to reward long service. This is a great opportunity to challenge and progress your career with one of the regions tech success stories as they continue to thrive.Whats next?Interested? Send in your CV or you can get in touch withMike if you have any questions.
Senior Software Developer
Spectrum IT Recruitment
City of London
In office
Senior
£100,000 - £120,000
windows
javascript
dot-net
html5
csharp
typescript
+2
Senior Software Developers specialising in trading systems required for an excellent client based in London. The successful Software Developer will join a extremely talented development team and you will be exposed to creating and maintaining our client’s own applications based around a C#/.NET/SQL Server/ASP.NET universe. Many projects are greenfield projects and allow you to make your own mark on the development process early on.You will be given the opportunity to work with the some of the latest technologies possible and will be expected to produce excellent code for our clients in house software applications and trading platform. Our client offers a very collaborative working environment with all of the development team coming from excellent educational backgrounds from across Europe. This role is within the sports trading industry so any candidate applying should either have an interest in the industry, or experience within it. This is predominantly an office-based role. As well as very competitive salaries, our client offers a comprehensive benefits package. Skills required: C# Worked with the latest version of the .NET platform Database experience - SQL Server WPF Angular, TypeScript Excellent communication skills both written and verbal Knowledge of working with trading platforms Modelling experience High level aptitude for technology Education to at least a BSc level or higher in Computer Science or Mathematics from a Russell Group University or equivalent. Desirable skills: HTML5, CSS, JavaScript Multi-threaded application development Understanding of Windows technologies If you feel you have the skills and experience required for this opportunity, please contact Oliver Wilson on (phone number removed) or email Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy
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