Lead the engineering standards behind a High-Growth UK SaaS platform

Software Development Manager

• NestJS / NodeJS, Vue: .NET backgrounds welcome
• Manchester (Hybrid: 1 day per week onsite)
• Up to 100,000 + benefits

If you’re a technically strong engineering leader who built your career on solid engineering foundations (whether in C# / .NET or modern JavaScript frameworks) and still care deeply about code quality, DevOps maturity, and scalable systems, this is a genuinely exciting opportunity.

We’re partnered with a high-growth UK SaaS technology company building data-driven digital products that help commercial teams better understand and engage their customers. As they scale their customer-facing platforms, they’re looking for an experienced Software Development Manager to shape engineering standards and lead the next phase of platform evolution.

The Tech Environment

The company’s stack has evolved. Originally built on a Microsoft / C# / .NET foundation, the platform has transitioned to a more modern stack including: NestJS / NodeJS, Vue, Redis, SQL Server, Snowflake.

They are open to candidates from a strong .NET background who have since gained experience in modern JavaScript/TypeScript ecosystems. Or who can demonstrate the adaptability and technical depth to operate in this environment.

What matters most is engineering quality, architectural thinking, and leadership credibility, not a rigid checklist of frameworks.

You’ll balance people leadership, technical direction, and delivery performance, ensuring teams build maintainable, secure, and high-performing systems.

What We’re Looking For

• Significant experience in a SaaS or product-led environment
• Strong previous experience as a hands-on software engineer (C#/.NET or modern JS/TS stacks)
• Proven leadership of engineering teams
• Experience building and operating systems at scale
• A solid understanding of automated testing and QA practices
• Familiarity with modern DevOps approaches
• Strong interpersonal and collaboration skills
• The ability to quickly pick up new tools and solve complex problems

Interested?

If you’re a strong engineering leader who wants to influence platform direction without stepping away from technical depth, this role offers real impact in a growing SaaS business.

Apply now or contact us for more details: (url removed)

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

Full Stack Java Software Engineer - Java, Spring, TypeScript, Node.js, RESTful APIs, SQL, NoSQL, Docker, Kubernetes, IaC (Terraform, CloudFormation), CI/ CD - Remote (Warrington) - £70-80k

My client has an urgent need for a Full Stack Java Software Engineer to join a rapidly-expanding and talented Engineering team. You will play a key role in the design and build of scalable, cloud-native applications across the full stack, working with microservices and automated delivery pipelines.

Full Stack Java Software Engineer Role and Responsibilities:

• Design and build high-quality, scalable, full stack Java-based software solutions

• Build Java/ Spring microservices and backend APIs for a variety of customer needs

• Develop both frontend and backend services using TypeScript, Node.js

• Build suitable infrastructure using Terraform/ CloudFormation and implement cloud-native and serverless architectures

• Build reliable and robust database solutions using both SQL and NoSQL

Full Stack Java Software Engineer Skills and Experience:

• In-depth software development expertise with Java and Spring/ Spring Boot

• Substantial experience building services using TypeScript and Node.js

• Detailed, hands-on knowledge of building microservices architecture and RESTful APIs

• Strong database experience within both SQL and NoSQL environments

• A thorough knowledge of both IaC (Terraform/ CloudFormation) and CI/ CD pipelines

• Experience with Golang, Rust and/ or Python would be ideal.

My client has an outstanding engineering culture and a focus on outcomes and you will work in cross-functional teams with leading-edge ways of working and an enlightened view of collaboration. This role is based remotely with very occasional (optional) visits to the companys headquarters to meet the rest of the team

Full Stack Java Software Engineer - Java, Spring, TypeScript, Node.js, RESTful APIs, SQL, NoSQL, Docker, Kubernetes, IaC (Terraform, CloudFormation), CI/ CD - Remote (Warrington) - £70-80k

Essential Recruitment is a specialist Tech recruitment business with an in-depth understanding of the rapidly-changing nature of the Tech market. We build long-term relationships with our clients and candidates based on our core values of Trust, Integrity and Delivery

TPBN1_UKTJ

Technical Lead Full Stack Developer

(TypeScript, JavaScript, Node)

Location: Hybrid working within Hampshire
Salary: Competitive + benefits

We’re working with a fast-growing UK SaaS technology company that builds data-driven digital products used by commercial teams to better understand and engage with their customers. They are now looking for an experienced technical lead full stack developer to play a key role in shaping and delivering their next generation of customer-facing platforms.

This is a hands-on technical leadership role where you’ll be involved from early design through to production delivery, working with a modern cloud-based stack and deploying to live environments on a daily basis.

The Role

• Lead technical delivery across a high-performing development squad (10+)
• Contribute to solution design, system architecture and domain modelling
• Build proof-of-concepts and spike complex or uncertain areas of work
• Break down requirements into deliverable epics and user stories alongside product and initiative managers
• Develop and deliver production-ready code across the full stack
• Ensure high standards of quality, maintainability, performance and security
• Support and improve live systems once deployed
• Influence technical direction, tooling and best practice across the wider engineering function

Tech Environment

You’ll work with a modern stack including:

• Node.js microservices
• JavaScript & TypeScript
• Vue.js
• Redis, SQL Server & Snowflake
• AWS cloud infrastructure
• CI/CD pipelines and DevSecOps practices

About You

• Strong full stack development experience (ideally 10+ years)
• 5+ years of JavaScript and TypeScript experience
• Solid background in system design and scalable architectures
• Experience building large, production SaaS platforms
• A clean-code mindset (SOLID principles, design patterns, testable code)
• Experience working in mature CI/CD and continuous deployment environments
• A commercial mindset when designing and delivering software
• Excellent collaboration skills and confidence working with stakeholders
• Interest in using AI to accelerate and improve software development
• A passion for performance, security and engineering best practice
• Degree in Computer Science or equivalent real-world experience

What’s On Offer

• Competitive salary and benefits package
• Hybrid working (1 day per week in the Fareham office)
• Opportunity to join a scaling UK SaaS business
• Strong engineering culture with a focus on quality and continuous improvement
• Supportive, collaborative working environment
• Community and charity initiatives, including volunteer days

Send your CV across to me on email (url removed) or call (phone number removed) for more information.

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

Want to own technical direction not just tickets?

Technical Lead Developer - Full Stack - JavaScript, TypeScript, Node.js

• Manchester (Hybrid - 1 day per week onsite)
• Up to 100,000 + benefits

If you’re the kind of engineer who naturally sets technical standards, challenges architectural decisions, and raises the bar for everyone around you, this is your opportunity to lead from the front.

We’re partnered with a fast-scaling UK SaaS technology company building sophisticated, data-driven digital products used by commercial teams to better understand and engage their customers. As they evolve their next-generation customer-facing platforms, they’re looking for a Technical Lead to take ownership of technical delivery and architectural direction.

This is a hands-on leadership role. You’ll be involved from early design through to production deployment, working in a modern cloud environment, where code ships to live environments daily.

Tech Environment

You’ll work with a modern stack including:

• TypeScript, JavaScript
• Microservices Architecture
• Redis, SQL Server & Snowflake
• AWS cloud infrastructure
• Mature CI/CD pipelines and DevSecOps practices

It’s a fast-moving SaaS environment with continuous deployment and a strong emphasis on engineering quality.

About You

You’re a senior full stack engineer who has naturally evolved into technical leadership.

• 10+ years’ experience in full stack development
• 3+ years’ commercial TypeScript experience
• Strong Node.js expertise
• Proven background in system design and scalable architectures
• Experience building and operating large, production SaaS platforms
• A clean-code mindset (SOLID principles, design patterns, testable systems)
• Experience working within mature CI/CD environments
• Strong commercial awareness when designing solutions
• Confident communicator who collaborates effectively with stakeholders
• An interest in leveraging AI to improve and accelerate development
• Passion for performance, security, and engineering excellence
• Computer Science degree or equivalent real-world expertise

Interested?

If you’re ready to shape technical direction in a high-growth SaaS environment, without stepping away from hands-on engineering, this could be the move.

Apply now or contact me to talk: (url removed)

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

About the Company A global data, analytics and technology organisation providing services in credit, fraud prevention, identity verification, risk management, automated decisioning and consumer insights. The Role We are looking for a Software Developer to join a growing Integrations and Decisioning engineering team. This role focuses on building and supporting reliable backend systems and services that power critical decisioning and data integrations. You will collaborate with internal teams and clients to design, develop and maintain high-quality systems while contributing to improvements in reliability, performance and engineering practices. Key Responsibilities Design and build reliable backend services and infrastructure tooling Write high-quality, maintainable code using Test-Driven Development (TDD) Develop and maintain automated test suites Own the reliability, observability and performance of key services Work directly with clients to understand requirements, investigate issues and propose solutions Improve system architecture, automation and deployment processes Support and mentor junior developers where appropriate Take ownership of technical challenges and drive solutions through to completion Essential Skills & Experience Strong programming skills in Node.js or a similar backend language Experience using TDD and automated testing practices Comfortable working with clients to gather requirements and troubleshoot issues Strong analytical and problem-solving abilities Clear and effective communication skills (written and verbal) Desirable Skills Experience supporting backend systems in production environments Exposure to cloud platforms (AWS or GCP) Experience with Infrastructure as Code, CI/CD pipelines and observability tooling Experience designing systems that operate under sustained load Contributions to internal developer tooling or open-source projects Experience working with large datasets or machine learning models TPBN1\_UKTJ

Be the master of your own code building brand new SaaS products Lead Software Developer £95 100k basic Hybrid once a week in Manchester office and 4 days WFH We are looking for a minimum of 3 Lead Developers for this company Your new opportunity A key member of the Software Development team, youll technically lead projects from design to implementation. Youll still be hands on but will also be involved in the important, strategic conversations and will bring your creative thinking and ideas to the table, always looking at the bigger picture and whats next. To be successful in this role, youll be a high performing individual with expertise in both JavaScript and TypeScript full stack development. Your new organisation Youll be joining a global SaaS technology organisation that is the market leader in their sector. They are passionate about software and technology and are continually striving to be better and stay clear of their competitors. Although extremely well established with a huge customer base, they are continuing to grow and develop new products whilst embracing AI and its capabilities. What youll bring As a well established Lead Developer, youll have both a technical and commercial mindset when it comes to designing and building systems. Other skills and knowledge youll bring: Experience across all areas of full stack development and ideally in large scale SaaS platforms. Strong knowledge and experience in JavaScript and TypeScript. Other technical knowledge required includes NodeJS, Vue, SQL Server. Forward thinking approach to producing quality software development and utilising AI. Experience of working in mature CI/CD environments and following DevSecOps methodologies. Whats in it for you? This is an opportunity for someone passionate about technology who wants to join a fast-growing SaaS company. Salary for this role is £95,000 100,000 basic. Its a hybrid role with one day a week in the Manchester office and 4 days from home. Other benefits include 25 days holiday (+ your birthday and bank holidays), pension, EAP scheme and more. Whats next? To learn more about this opportunity, please click apply or send your CV to dominic . buck @ mexasolutions . com Ill be reviewing every CV that applies or lands in my inbox so please dont be put off by the volume of applications on this role. TPBN1\_UKTJ

Lead Software Engineer - MongoDB / Node.js / JavaScript As a Lead Engineer, youll play a pivotal role in shaping the technical direction of the product. Youll guide a talented squad of engineers, drive architectural decisions, and deliver scalable backend systems that directly impact thousands of users.

This is a hands-on leadership role where youll balance technical excellence with mentorship, collaboration, and strategic thinking.

What Youll Be DoingTechnical Leadership Set the technical direction and lead architectural decision-making

Mentor and support junior and senior engineers

Conduct code reviews and uphold engineering best practices

Backend Engineering Build and maintain scalable backend services and RESTful APIs

Design and optimise MongoDB database solutions

Improve and maintain existing backend infrastructure

Troubleshoot production issues and implement robust solutions

Collaboration & Delivery Work closely with cross-functional teams to deliver meaningful customer outcomes

Participate in technical interviews and help grow the engineering team

Drive improvements in processes, tooling, and development practices

Core Technical Skills Youll thrive if you have experience with:

MongoDB (data modelling, indexing, aggregation, performance tuning)

Node.js and the wider JavaScript/TypeScript ecosystem

Express.js and/or Fastify

RESTful API design

AWS or similar cloud platforms

Microservices architecture

Testing frameworks (Vitest, Jest, Mocha, etc.)

CI/CD pipelines & DevOps practices

GitHub workflows

Observability tools (e.g., DataDog)

Docker / Kubernetes

Tech Stack Youll Be Working With Node.js, JavaScript/TypeScript

Express.js, Fastify

MongoDB

AWS

Vue.js, Nuxt.js

Nice to Have AI Experience Not essential, but a big bonus:

Integrating AI/ML models

Working with LLM APIs (OpenAI, Anthropic, etc.)

Prompt engineering

AI workflow tools (LangChain, Flowise)

Building internal AI automation tools

Benefits This company genuinely invests in its people. Youll enjoy:

Remote-first working with offices in London, Manchester

Flexible hours

25 days annual leave + 8 bank holidays + 2 Christmas shutdown days

Option to purchase an extra week off

Interested? Please Click Apply Now!

TPBN1_UKTJ

As a Technical Lead, youll work directly with the founder to shape the technical vision and execution of a high-growth startup backed by a larger, established group. Youll lead a talented engineering squad, drive architectural decisions, and deliver scalable backend systems that support thousands of users-all while influencing the strategic direction of the product.

This is a hands-on leadership role where youll combine deep technical expertise with mentorship, strategic thinking, and cross-functional collaboration in a fast-moving startup environment.

The RoleTechnical Strategy & Leadership

• Work alongside the founder to define and evolve the technical roadmap
• Lead architectural design and critical technology decisions
• Champion engineering best practices, code quality, and technical excellence
• Mentor, coach, and grow engineers at all levels
• Foster a culture of ownership, collaboration, and innovation

Backend Architecture & Development

• Architect, build, and scale backend services and RESTful APIs
• Design, optimise, and maintain MongoDB database solutions
• Improve system reliability, performance, and scalability
• Resolve complex production issues with robust solutions
• Implement microservices and modern backend patterns

Collaboration & Delivery

• Partner with Product, Design, and the founder to deliver high-impact outcomes
• Participate in hiring and technical interviews to grow the engineering team
• Drive improvements in processes, CI/CD pipelines, and DevOps practices
• Ensure effective planning, estimation, and execution across initiatives

Core Technical Expertise

Youll thrive in this role if you have strong experience with:

• MongoDB (data modelling, indexing, aggregation pipelines, performance tuning)
• Node.js and the wider JavaScript/TypeScript ecosystem
• Express.js and/or Fastify
• RESTful API design and distributed systems
• AWS or similar cloud platforms
• Microservices architecture
• Testing frameworks (Vitest, Jest, Mocha, etc.)
• CI/CD pipelines and DevOps best practices
• GitHub workflows
• Observability and monitoring tools (e.g., Datadog)
• Docker and Kubernetes

Tech Stack

Youll be working with:

• Node.js, JavaScript/TypeScript
• Express.js, Fastify
• MongoDB
• AWS
• Vue.js, Nuxt.js

Nice to Have AI Experience

Not essential, but highly desirable:

• Integrating AI/ML models into production systems
• Working with LLM APIs (OpenAI, Anthropic, etc.)
• Prompt engineering
• AI workflow tools (LangChain, Flowise)
• Building internal AI-powered automation tools

Why This Role is Exciting

• Work directly with the founder on a startup backed by a larger, established group
• Influence the technical and product direction from the ground up
• Hands-on leadership in a fast-moving, high-impact environment

Benefits

We genuinely invest in our people. Youll enjoy:

• Remote-first working (offices in London and Manchester)
• Flexible working hours
• 25 days annual leave + 8 bank holidays + 2 Christmas shutdown days
• Option to purchase an additional week of leave

Interested? Please Click Apply Now!Technical Lead - TypeScript / Node.js

Software Engineer II Hybrid: Manchester (1 day a week) Inside IR35: £500 Duration: 6 months Tech Stack: Java / Spring Boot, SQL Server, AWS, Kubernetes, CI/CD. Node.js/Python and SSIS experience is a bonus. A technology‑driven team is seeking an experienced Software Engineer II to support the design, build and operation of backend services within a financial data environment. This role is ideal for someone who values strong engineering practices, autonomy, and cross‑functional collaboration. You will help develop and operate backend systems that deliver accurate, timely financial data to critical enterprise processes. The role includes hands-on development, production support, and ensuring compliance with key regulatory frameworks such as SOX and GDPR/PII. Java / Spring Boot Python & Node.js Microsoft SQL Server, SQL optimisation SSIS (bonus) AWS Kubernetes, Docker CI/CD tooling Infrastructure as Code (TypeScript, AWS CDK) Exposure to Apache Spark is a plusIf this sounds like you, please apply. Please click to find out more about our Key Information Documents. Please note that the documents provided contain generic information. If we are successful in finding you an assignment, you will receive a Key Information Document which will be specific to the vendor set-up you have chosen and your placement. To find out more about Computer Futures please visit Computer Futures, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC(phone number removed) England and Wales

(TypeScript, JavaScript, Node)

Location: Remote, until the Staffordshire HQ has been opened.

We’re working with a fast-growing UK SaaS technology company that builds data-driven digital products used by commercial teams to better understand and engage with their customers. They are now looking for an experienced Technical Lead Full Stack Developer to play a key role in shaping and delivering their next generation of customer-facing platforms.

This is a hands-on technical leadership role where you’ll be involved from early design through to production delivery, working with a modern cloud-based stack and deploying to live environments on a daily basis.

The Role

• Lead technical delivery across a high-performing development squad (10+)
• Contribute to solution design, system architecture and domain modelling
• Build proof-of-concepts and spike complex or uncertain areas of work
• Break down requirements into deliverable epics and user stories alongside product and initiative managers
• Develop and deliver production-ready code across the full stack
• Ensure high standards of quality, maintainability, performance and security
• Support and improve live systems once deployed
• Influence technical direction, tooling and best practice across the wider engineering function

Tech Environment

You’ll work with a modern stack including:

• Node.js microservices
• JavaScript & TypeScript
• Vue.js
• Redis, SQL Server & Snowflake
• AWS cloud infrastructure
• CI/CD pipelines and DevSecOps practices

About You

• Strong full stack development experience (ideally 10+ years)
• 5+ years of JavaScript and TypeScript experience
• Solid background in system design and scalable architectures
• Experience building large, production SaaS platforms
• A clean-code mindset (SOLID principles, design patterns, testable code)
• Experience working in mature CI/CD and continuous deployment environments
• A commercial mindset when designing and delivering software
• Excellent collaboration skills and confidence working with stakeholders
• Interest in using AI to accelerate and improve software development
• A passion for performance, security and engineering best practice
• Degree in Computer Science or equivalent real-world experience

What’s On Offer

• Competitive salary and benefits package
• Hybrid/Remote Working
• Opportunity to join a scaling UK SaaS business
• Strong engineering culture with a focus on quality and continuous improvement
• Supportive, collaborative working environment
• Community and charity initiatives, including volunteer days

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

The Opportunity:

Our client is looking for a seasoned Lead Full Stack Software Engineer to provide end-to-end technical leadership across high-value mission-critical digital services within the public sector.

This is a senior level position where you will be involved in hands-on development as well as team management to steer multi-disciplinary development teams for large-scale digital transformation programmes.

Skills and Experience:

• Extensive experience leading Full Stack Engineering teams with advanced capabilities in .NET, Java, or Python, along with exposure to modern JavaScript frameworks.
• Proven track record mentoring engineers and elevating delivery quality through structured coaching.
• Strong client-facing acumen with the ability to advise on strategic technology direction.
• Delivery leadership within Agile environments (Scrum, Kanban, TDD, etc.)
• Hands-on experience architecting scalable secure cloud solutions on AWS and/or Azure
• A consulting or software house background is also highly desirable

Role and Responsibilities:

• The Lead Full Stack Software Engineer to provide end-to-end technical leadership across high-value, mission-critical digital services within the public sector. This is a senior strategically influential role where you will take full accountability for complex solution architectures, steer multi-disciplinary delivery teams, and set the engineering agenda for large-scale digital transformation programmes
• Operating in a technology-agnostic environment you will leverage a broad modern tech stack across .NET, Java, Python, Node.js, AWS, Azure and contemporary JavaScript frameworks
• Provide coaching and leadership, supporting the long-term development of engineers across the business

Applications:

Please contact Edward here at ISR to learn more about our client and how they are leading the way in developing the next generation of technical solutions through innovation and transformational technology?

The Opportunity: You’ll join an experienced, collaborative consultancy team delivering greenfield, enterprise-scale digital services for high-profile public and private sector clients. This opportunity is ideal for a practical, adaptable Geospatial Full Stack Engineer who enjoys working across disciplines and solving complex problems and challenges that will have a real-world impact. Collaboration sits at the heart of how our client operates, so you’ll be partnering closely with colleagues across Software Engineering, User-Centred Design, Delivery Management, Data Science and Live Services to deliver outcomes that genuinely make a difference in today’s society. As a consultancy, they are technology-agnostic by design, focusing on choosing the right tools for each problem, rather than forcing one stack everywhere. Their teams regularly work with .NET, Java, Python, Node.js, AWS and Azure, giving you genuine scope to broaden your skills and develop your career across a range of languages and platforms. Many of their projects also involve Geographic Information Systems (GIS) and open-source geospatial technologies, helping clients unlock the value of location-based data through mapping, spatial analysis and data-driven decision making. Skills and Experience: Essential \* 3+ years’ experience in a Full Stack Engineering role \* Strong development skills in .NET, Java or Python, alongside modern JavaScript frameworks/libraries \* Experience working in Agile environments (Scrum, Kanban, TDD) \* Solid understanding of architectural and design patterns, including microservices and serverless \* Hands-on experience designing and delivering solutions on AWS or Azure \* Experience working with GIS systems or geospatial data, and familiarity with tools such as Leaflet, OpenLayers, QGIS, GeoServer, PostGIS, etc. \* A collaborative mindset and experience working in multi-disciplinary teams Desirable \* Experience working in a consultancy environment \* Exposure to public sector projects \* Familiarity with CI/CD tooling (e.g. Jenkins, Terraform) \* Awareness of the Digital Service Standard and Technology Code of Practice, particularly in geospatial or public sector contexts Role and Responsibilities: This is a varied role suited to someone who enjoys the pace, responsibility and collaboration of consultancy. You will be involved with the following types of activity: \* Design and deliver high-quality solutions: building, enhancing and maintaining software, infrastructure and deployment pipelines that are robust, secure and scalable. Projects may include solutions involving geospatial data, GIS platforms and open-source mapping tools. \* Work collaboratively across disciplines: partnering with Senior and Lead Engineers, Delivery Managers, Designers and Data Scientists to shape solutions, contribute to technical documentation and deliver against agreed plans. \* Apply standards and best practice: follow established engineering approaches, contribute accurate technical estimates and proactively identify and escalate risks or issues. \* Communicate clearly and build relationships: present ideas, prototypes and progress updates to stakeholders, while building strong working relationships with colleagues, clients and partner organisations. Applications: Please contact Edward here at ISR to learn more about our client and how they are leading the way in developing the next generation of technical solutions through innovation and transformational technology?

TransUnion’s Job Applicant Privacy Notice What We’ll Bring: We Are TransUnion: TransUnion is a major credit reference agency, and we offer specialist services in fraud, identity and risk management, automated decisioning and demographics. We support organisations across a variety of sectors including finance, retail, telecommunications, utilities, gaming, government and insurance. What You’ll Bring: We’re looking for a Software Developer to join our growing Integrations and Decisioning team. Day to Day You’ll Be: Design and build reliable backend systems and infrastructure tooling Use TDD to write high-quality, maintainable code and build out automated test suites Own reliability, observability, and performance of key services Collaborate with clients to understand requirements, debug issues, and propose solutions Drive improvements to system architecture, automation, and deployment processes Mentor junior developers and contribute to a strong engineering culture Take ownership of problems-investigate, iterate, and fix Essential Skills & Experience: Strong programming skills in Node.js or similar backend language Understanding of TDD and a focus on automated testing Comfort working directly with clients to gather requirements and debug issues Strong problem-solving skills and a desire to understand the root cause of complex issues Clear communicator-both in writing and on calls Desirable Skills & Experience: Experience owning backend systems in production environments Experience with Cloud Platforms AWS or GCP Infrastructure-as-code, CI/CD, and observability tooling Experience scaling systems under sustained load Contributions to internal tooling or open source Experience with large datasets and machine learning models Impact You’ll Make: What’s In It For you? At TransUnion you will be joining a friendly, forward thinking global business. As well as an excellent salary and bonus scheme or commission scheme (if joining our sales teams) our benefits package comes with: 26 days’ annual leave + bank holidays (increasing with service) Global paid wellness days off + a bonus day off to celebrate your birthday A generous contributory pension scheme + access to the TransUnion Employee Stock Purchase Plan Private health care + a variety of physical, mental and financial fitness wellbeing programmes such as access to mindfulness tools Access to our diversity forums and communities so you can get involved in causes close to your heart TransUnion - a place to grow: If there’s something on the list of essential / desirable skills that you can’t quite tick off, don’t let that put you off applying. We are open to exploring training and development opportunities for the right candidate to ensure you are successful. We know imposter syndrome is real, lets confront it so we can continue to grow and thrive together. Flexibility at TU: We recognise that our people need the freedom to balance their day-to-day lives with their work. This is why we’ve set out to create inclusive and flexible policies and practices for you to accommodate all your responsibilities and needs: children, family and beyond. If the role is advertised as full time, don’t let this stop you from applying. Let us know if you’re looking for a part time or flexible working arrangement and we can discuss this with you. Additional support: At TransUnion, we’re committed to fostering an inclusive and diverse workplace where all individual’s talents and perspectives are valued. When you apply for a position with us, you’re not just joining a team, you’re becoming part of a community that celebrates differences and embraces equality. We understand that everyone has different needs, which is why we offer a range of reasonable adjustments to our recruitment process. Please let us know if you require any reasonable adjustments to help you through the application process or to attend an interview with us by contacting (url removed) Interview & Hiring Process: Most of our recruitment processes are virtual, so you’ll get to know our hiring managers and teams over the phone and through video. If we need you to attend a physical in person interview your recruiter will inform you of this. We do not accept any unsolicited CV’s from recruitment agencies. If you are a recruitment agency on our PSL our talent team will contact you directly should we require any assistance. #LI-Hybrid Find out more about Life At TU UK: (url removed) Job Title Sr Engineer, Software Development

Ready to architect platforms that operate at serious scale?

Software Architect - NestJS, NodeJS, Vue - .NET backgrounds welcome

• Manchester (Hybrid - 1-2 days per week onsite)
• Up to 110,000 + benefits

We’re partnered with a fast-scaling UK SaaS company building high-performance, data-driven platforms used by commercial teams to better understand and engage their customers.

They’re now looking for a Software Architect to shape the next generation of their customer-facing systems; designing scalable, cloud-first solutions capable of handling high data throughput and large data sets.

The Environment

The platform has evolved from a Microsoft / C# / .NET foundation into a modern stack including:

• NestJS, NodeJS, Vue
• Redis, SQL Server & Snowflake
• AWS (cloud-first architecture)

Strong .NET Architects who’ve worked in modern cloud and micro-services environments, or who can operate confidently across Node/TypeScript ecosystems, are absolutely encouraged to apply.

What matters most is architectural depth, SaaS scalability experience, and strong engineering principles.

The Role

This is ideal for someone who has progressed from hands-on engineering into architecture and still understands what great code and great systems look like.

You’ll:

• Design large-scale, high-performance SaaS architectures
• Lead microservices and event-driven design initiatives
• Champion DevOps-aligned architecture patterns
• Work across distributed/offshore teams
• Operate comfortably at both strategic and deep technical levels
• Influence AI architecture and modern data practices

What We’re Looking For

• 3-5+ years in a Software Architect role
• Strong engineering background (C#/.NET or modern JS/TS stacks)
• Experience within mature B2B SaaS environments
• Deep knowledge of cloud architecture (ideally AWS)
• Experience with microservices, event-driven systems
• Strong understanding of OLAP, OLTP, ETL & data warehousing
• DevOps-first mindset
• Excellent stakeholder engagement skills

Interested?

If you’re an Architect who wants real influence in a scaling SaaS environment - without being boxed into one technology - this is a strong opportunity.

Apply now or contact us for a confidential discussion: (url removed)

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

As a Technical Lead, you ll work directly with the founder to shape the technical vision and execution of a high-growth startup backed by a larger, established group. You ll lead a talented engineering squad, drive architectural decisions, and deliver scalable backend systems that support thousands of users-all while influencing the strategic direction of the product.

This is a hands-on leadership role where you ll combine deep technical expertise with mentorship, strategic thinking, and cross-functional collaboration in a fast-moving startup environment.

The Role Technical Strategy & Leadership

• Work alongside the founder to define and evolve the technical roadmap
• Lead architectural design and critical technology decisions
• Champion engineering best practices, code quality, and technical excellence
• Mentor, coach, and grow engineers at all levels
• Foster a culture of ownership, collaboration, and innovation

Backend Architecture & Development

• Architect, build, and scale backend services and RESTful APIs
• Design, optimise, and maintain MongoDB database solutions
• Improve system reliability, performance, and scalability
• Resolve complex production issues with robust solutions
• Implement microservices and modern backend patterns

Collaboration & Delivery

• Partner with Product, Design, and the founder to deliver high-impact outcomes
• Participate in hiring and technical interviews to grow the engineering team
• Drive improvements in processes, CI/CD pipelines, and DevOps practices
• Ensure effective planning, estimation, and execution across initiatives

Core Technical Expertise

You ll thrive in this role if you have strong experience with:

• MongoDB (data modelling, indexing, aggregation pipelines, performance tuning)
• Node.js and the wider JavaScript/TypeScript ecosystem
• Express.js and/or Fastify
• RESTful API design and distributed systems
• AWS or similar cloud platforms
• Microservices architecture
• Testing frameworks (Vitest, Jest, Mocha, etc.)
• CI/CD pipelines and DevOps best practices
• GitHub workflows
• Observability and monitoring tools (e.g., Datadog)
• Docker and Kubernetes

Tech Stack

You ll be working with:

• Node.js, JavaScript/TypeScript
• Express.js, Fastify
• MongoDB
• AWS
• Vue.js, Nuxt.js

Nice to Have AI Experience

Not essential, but highly desirable:

• Integrating AI/ML models into production systems
• Working with LLM APIs (OpenAI, Anthropic, etc.)
• Prompt engineering
• AI workflow tools (LangChain, Flowise)
• Building internal AI-powered automation tools

Why This Role is Exciting

• Work directly with the founder on a startup backed by a larger, established group
• Influence the technical and product direction from the ground up
• Hands-on leadership in a fast-moving, high-impact environment

Benefits

We genuinely invest in our people. You ll enjoy:

• Remote-first working (offices in London and Manchester)
• Flexible working hours
• 25 days annual leave + 8 bank holidays + 2 Christmas shutdown days
• Option to purchase an additional week of leave

Interested? Please Click Apply Now! Technical Lead - TypeScript / Node.js

Senior Full-Stack Developer

My Client is a fast-growing technology company building high-performance, real-time digital products used at significant live and large-scale environments.

They are seeking a Senior Full-Stack Developer to play a key role in shaping and scaling their core platform.

This is a senior, hands-on position working closely with the CTO to architect, build and optimise systems that must perform reliably under substantial concurrent usage.

The Role

You will collaborate directly with the CTO (an experienced full-stack engineer) to design and deliver robust, scalable systems.

This role spans frontend, backend and infrastructure. It is ideal for someone who enjoys technical ownership, architectural input and solving complex engineering challenges.

Key Responsibilities

• Design and implement scalable cloud-based architectures using Infrastructure as Code
• Build and enhance high-performance, real-time web applications
• Develop systems capable of handling high-throughput, concurrent usage
• Improve performance, reliability and scalability across existing products
• Build new web applications, services and supporting infrastructure
• Implement comprehensive unit testing and conduct load/performance testing
• Establish and maintain CI/CD pipelines
• Improve developer experience and streamline onboarding processes
• Contribute to technical strategy and architectural decisions

About You

You are:

• 5+ years experience in full-stack development
• Strong in web fundamentals, networking concepts and security best practices
• Comfortable moving between frontend, backend and infrastructure
• Experienced designing and implementing AWS-based architectures using IaC
• Confident building scalable, low-latency real-time systems (e.g. WebSockets, event-driven systems)
• A collaborative team player who values paired programming and knowledge sharing
• An articulate communicator with strong analytical thinking
• Calm and solutions-focused when working under pressure

Tech Stack

You don t need experience in everything listed, but strong exposure to comparable technologies is expected.

Frontend: React, JavaScript/TypeScript, CSS

Backend: Node.js, Redis, DynamoDB, MySQL
AWS services such as CloudFront, ECS, Lambda, S3 and EC2

Tools & Practices: Git, Infrastructure as Code, Vite, Webpack, Docker, CI/CD, Unit Testing

Bonus: Terraform

Benefits:

• MacBook Pro and modern equipment
• Remote-first (UK-based)
• 25 days holiday + bank holidays
• Flexible working (core hours 9:00 5:30)
• Supportive, high-trust culture

Interested? Please Click Apply Now! Senior Full-Stack Developer

Lead Software Engineer - MongoDB / Node.js / JavaScript

As a Lead Engineer, you ll play a pivotal role in shaping the technical direction of the product. You ll guide a talented squad of engineers, drive architectural decisions, and deliver scalable backend systems that directly impact thousands of users.

This is a hands-on leadership role where you ll balance technical excellence with mentorship, collaboration, and strategic thinking.

What You ll Be Doing Technical Leadership

• Set the technical direction and lead architectural decision-making
• Mentor and support junior and senior engineers
• Conduct code reviews and uphold engineering best practices

Backend Engineering

• Build and maintain scalable backend services and RESTful APIs
• Design and optimise MongoDB database solutions
• Improve and maintain existing backend infrastructure
• Troubleshoot production issues and implement robust solutions

Collaboration & Delivery

• Work closely with cross-functional teams to deliver meaningful customer outcomes
• Participate in technical interviews and help grow the engineering team
• Drive improvements in processes, tooling, and development practices

Core Technical Skills

You ll thrive if you have experience with:

• MongoDB (data modelling, indexing, aggregation, performance tuning)
• Node.js and the wider JavaScript/TypeScript ecosystem
• Express.js and/or Fastify
• RESTful API design
• AWS or similar cloud platforms
• Microservices architecture
• Testing frameworks (Vitest, Jest, Mocha, etc.)
• CI/CD pipelines & DevOps practices
• GitHub workflows
• Observability tools (e.g., DataDog)
• Docker / Kubernetes

Tech Stack You ll Be Working With

• Node.js, JavaScript/TypeScript
• Express.js, Fastify
• MongoDB
• AWS
• Vue.js, Nuxt.js

Nice to Have AI Experience

Not essential, but a big bonus:

• Integrating AI/ML models
• Working with LLM APIs (OpenAI, Anthropic, etc.)
• Prompt engineering
• AI workflow tools (LangChain, Flowise)
• Building internal AI automation tools

Benefits

This company genuinely invests in its people. You ll enjoy:

• Remote-first working with offices in London, Manchester
• Flexible hours
• 25 days annual leave + 8 bank holidays + 2 Christmas shutdown days
• Option to purchase an extra week off

Interested? Please Click Apply Now!

My Client is a growing technology company delivering high-performance, real-time digital products used in large-scale, high-traffic environments.

They re looking for an experienced Full-Stack Developer to join their small, collaborative team and contribute across the entire technology stack.

This is a hands-on role where you ll work on live production systems, help develop new platform capabilities, and ensure products perform reliably when it matters most.

The Role

You ll contribute across frontend, backend and infrastructure, working on a variety of projects including:

• Enhancing and maintaining existing production systems
• Contributing to the next generation of their real-time platform
• Customising and adapting products for different use cases
• Supporting live deployments and troubleshooting when required

You ll work closely with senior developers and the CTO, taking direction while contributing ideas and technical input.

About You

You are:

• Comfortable working across frontend, backend and cloud infrastructure
• Curious and eager to learn, particularly around scalable, real-time systems
• Experienced with modern JavaScript/TypeScript ecosystems
• A collaborative team player who enjoys pairing and knowledge sharing

Tech Stack

The team spends most of their time within a modern JavaScript and AWS ecosystem. You don t need to know everything listed, but strong fundamentals are essential.

Must-Haves

• React
• JavaScript / TypeScript
• Node.js
• Git

Nice-to-Haves

• Redis
• DynamoDB
• Postgres or MySQL
• WebSockets
• AWS services (CloudFront, ECS, Lambda, S3, EC2, ElastiCache)
• Docker
• CI/CD pipelines
• Unit testing
• Infrastructure tooling (e.g. Pulumi)
• Build tools such as Vite or Webpack
• Occasional exposure to PHP

Key Responsibilities

• Improve performance, reliability and scalability of existing products
• Develop new features and services within the core platform
• Support infrastructure and deployment workflows
• Follow technical direction while contributing ideas and improvements
• Assist with troubleshooting and resolving issues in time-sensitive environments
• Learn from senior team members and actively contribute to a collaborative culture

Benefits

• MacBook Pro and modern equipment
• Remote-first (UK-based)
• 25 days holiday + bank holidays
• Supportive, close-knit team

Interested? Please Click Apply Now! Full-Stack Developer (React / TypeScript / Node.js)

Office location: Manchester Hybrid role: 1-day a week in-office in Manchester if within a 1-hour commute | 1-day a month in-office if outside of a 1-hour commute Salary: up to £50k per annum dependent on experience Haystack has partnered with this client, a growing company, to find a talented and experienced Node Developer / Engineer to join their team in Manchester. You will be joining a full-time Node development team, working on a wide range of existing and new projects for their client base. About You We are looking for a professional who is passionate about their work, possesses an eye for detail, and has a zeal for well-crafted and tested code. You should be comfortable working on large-scale projects with challenging developments and be keen to learn and progress within a dynamic team. Key Skills and Experience Required - Proficient in Node.js - 2+ years of commercial experience - Experience with Apollo GraphQL - Strong understanding of JavaScript and Object-Oriented Programming (OOP) - Comfortable working with JSON and creating back-end architectures - Experience with Git - Ideally, agency experience or comfort working in a fast-paced environment with multiple projects