React Jobs in London

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React Jobs in London

Overview

Looking for React jobs in London? Explore the latest React developer roles in one of the UK’s top tech hubs. Whether you’re a junior or senior React engineer, Haystack offers exclusive access to London-based opportunities with leading employers. Start your React career in London today and connect with exciting frontend and full-stack positions tailored to your skills.

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Software Engineer - Reasct/Angular

Software Engineer - Angular/React

Hybrid Working - London - 2 days a week on site.

Financial Services

Lorien’s leading banking client is looking for a Software Engineer to become part of the expanding team on an ongoing resilience project.

The ideal candidate will come from a Financial Services Background, with strong skills in using Angular, React, and JavaScript.

This role is based in London.

This role will be Via Umbrella.

Working in a Hybrid Model of 2 days a week on site.

Key Skills and Experiences

Experience of working within Financial Services/High Street Banking

Strong Skills working with:

Liaises with business stakeholders, principal Engineers, architects in the domain to shape and successfully deliver projects

IND_PC3

Carbon60, Lorien & SRG - The Impellam Group STEM Portfolio are acting as an Employment Business in relation to this vacancy.

Role: Software Engineer (React)

Length: Initial 3-month engagement

Location: Hybrid - 2 days per week in London

IR35 Status: Inside IR35

Pay Rate: £600 - £700 per day

Clearance: SC Clearance

One of my public sector clients are urgently looking for a React Software Engineer to join their team on a hybrid basis with travel to site 2 days per week in London, this will be on an initial 3-month engagement. They are interested in React Software Engineers with experience of working in an Agile environment amongst multi-disciplinary teams. Active SC clearance is required for this position.

Key Requirements

Experience JavaScript, React, Node.js and TypeScript.

Strong experience in writing reusable, testable components, within React.

Proficiency in modern JavaScript (ES6) and JSX syntax.

Experience with building and maintaining RESTful API s using Node.js.

Ability to write optimised SQL queries for data retrieval, manipulation and management.

Experience with developing accessible, responsive layouts using componentised CSS/SASS.

Working practices such as test-driven development or behaviour-driven development.

TypeScript testing using Jest or a similar framework and React Testing Library or Enzyme for component testing.

Desirable Skills:

Familiarity with SQL database concepts and hands on experience with PostgreSQL.

Familiarity with version control using Git.

Experience of continuous integration and continuous delivery using Github actions.

Are you interested in this position? If so, then please apply with your CV and I will be in touch ASAP.

Full Stack Software Engineer

Full Stack Software Engineer

The location of the role is London (hybrid working).

The duration of the contract is 6 months.

The pay rate on offer is 750 - 880 per day (via Umbrella - inside IR35).

Key responsibilities

Front end implementation for a React application

Visualizing and interacting with scientific data and workflow progression

Integration of AI/ML components with frontend, backend, data and compute infrastructure

Responsible for high quality software implementations according to best practices, including automated test suites and documentation

Develop, measure, and monitor key metrics for all tools and services and consistently seek to iterate on and improve them

Participate in code reviews, continuously improving personal standards as well as the wider team and product

Liaise with other technical staff and data engineers in the team and across allied teams, to build an end-to-end pipeline consuming other data products

Basic qualifications:

5+ years’ experience with frontend software development (e.g. React)

Demonstrated experience of Python development (e.g. using FastAPI)

Bachelor’s degree in a relevant field (including computational, numerate or life sciences), or equivalent experience

Cloud experience (e.g. Google Cloud and cloud run preferred) including core web application infrastructure is essential

Strong skills in JavaScript/TypeScript and Python, ensuring best practices are followed for clean and scalable code

Demonstrated ability to work directly with designers, particularly using Figma, to convert design prototypes into engaging and interactive applications

Experience in using automated testing tools, including Playwright and Cypress, to create, maintain, and execute comprehensive test suites

Sound understanding of web development best practices, modern design principles, and continuous integration workflows

Knowledge of agile practices and able to perform in agile software development environments

Strong knowledge of modern software development tools / ways of working (e.g. git/GitHub, DevOps tools for deployment) - should be able to show practice of commit early and deploy often

Preferred qualifications:

Experience with Docker or containerized applications, especially architecture of multi-container applications

Demonstrated experience with biological or scientific data (e.g. genomics, transcriptomics, proteomics), or pharmaceutical industry experience, especially design of data visualisations

Knowledge of agent-based approaches (e.g. LangGraph, PydanticAI, AutoGen)

Java/Python - Data Analytics - Cross Asset - Front Office

Java/Python (Data Analytics & Front Office Applications)

Are you an experienced Java/Python engineer with a Front Office mindset? We are hiring for a growing Data Analytics team focused on building business applications, dashboards, and analytics tools that directly impact trading and risk management.

You will work closely with traders and business desks, translating complex data into actionable insights and intuitive tools. This is a greenfield opportunity to shape the Data Analytics capability from the ground up, building frameworks that are reusable across asset classes.

Key Responsibilities:

Develop applications and dashboards for Risk, MIS and P&L explainers

Collaborate with trading desks to understand business requirements and deliver practical solutions.

Work with both Java and Python

Contribute to building a robust, cross-asset analytics platform.

Participate in modern, containerised, cloud-native development practices.

Requirements

Proven experience in Java and Python development.

Strong understanding of Front Office operations and the ability to communicate with traders.

Experience building dashboards, analytics tools, or business applications.

Comfortable working in a fast-moving, greenfield environment.

Knowledge of React, KDB, or low-latency systems is a plus.

Why Apply:

Modernisation Initiative: Be part of a major IT transformation simplifying and modernsing the technology stack.

Greenfield Projects: Work on innovative projects across FX, equities, and cross-asset teams.

Cutting-Edge Infrastructure: Full containerised deployments, cloud-native platforms, and DevOps best practices.

Strategic Business Partnership: Collaborate directly with trading and sales teams; IT is treated as a true business partner.

Impactful Work: Build reusable frameworks that shape the future of analytics and trading applications.

If you thrive in fast-paced environments, enjoy translating complex data into actionable insights, and want to make a tangible impact on trading and analytics, this is the role for you.

Full Stack Developer Java AWS React - Fintech

Full Stack Developer / Software Engineer (Java AWS React) London / WFH to £110k

Are you a technologist looking for an opportunity to be part of something big from the start?

You could be progressing your career in an impactful role at a newly established Fintech start-up, set up by a small team of finance and technology entrepreneurs with a hugely successful track record.

As a Full Stack Developer you will join a small team to build systems from the ground up, working across the full technology stack with a focus on designing, developing and deploying cloud-native microservices that form the core of the platform. You’ll collaborate closely with the Lead Engineer, Architect and Product Manager to shape system design, APIs and data models to enable scalable backend logic and clean UI.

Location / WFH:

You can work from home most of the time, meeting up with colleagues in London; as the company grows there will likely be some in office requirements but with lots of flexibility.

About you:

You have strong Java, AWS and Kubernetes skills and also have a good appreciation of user interface / front end development using React or Tailwind CSS

You have a strong knowledge of modern software engineering best practices including cloud native applications, microservices and CI/CD

You are an advocate of AI and keen to explore its capabilities

You are commercially aware and can see the “big picture”

You’re a skilled problem solver, able to make trade-offs and get things done

You’re collaborative and pragmatic with great communication skills

Ideally you will have a good understanding of Financial Services / Open Banking

What’s in it for you:

As a Full Stack Developer / Software Engineer (Java AWS React) you will receive:

Up to £110k

Significant stock options

Apply now to find out more about this Full Stack Developer / Software Engineer (Java AWS React) opportunity.

At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We’re an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

Java Developer Kotlin AWS - Trading

Java Developer / Backend Software Engineer (Java 17 Kotlin AWS) London / WFH to £85k

Are you a technologist Java Developer with Kotlin skills looking to progress your career, working with a modern cloud based infrastructure and a range of technology?

You could be joining a hugely successful and growing commodities trading firm that specialise in trading silver and gold.

As a Java Developer you’ll collaborate with the Lead Engineer on the core trading platform as the company looks to scale the platform and introduce new features. There’s an emphasis on code quality; designing and developing highly complex web based trading platforms working across the full development lifecycle.

The technology stack includes Java 17, Kotlin, Spring Boot and AWS amongst others; you’ll be encouraged to expand your skillset using the latest technologies and choosing the best tool for the job in a friendly Agile team environment.

WFH Policy:

You’ll join the team in the West London office with flexibility to work from home twice a week.

About you:

You are degree educated, having achieved a 2.1 or above gained in Computer Science (or similar STEM discipline) from a top tier university (e.g. Russel Group) backed by A’s at A-level

You have strong Java and Kotlin development experience

You have experience with Agile processes and TDD

You have a thorough understanding of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, Algorithms

Other tech in the stack includes Scala, React, Spring, Oracle, Redis, Kubernetes, Docker and Linux so previous exposure to any of these would be beneficial

You’re collaborative with good communication skills

What’s in it for you:

As a Java Developer / Backend Software Engineer you will earn:

Salary to £85k

Bonus

Hybrid working (x3 days in London per week)

Learning and career development opportunities

Apply now to find out more about this Java Developer / Backend Software Engineer (Java 17 Kotlin AWS) opportunity.

Senior Application Support Engineer

We’re looking for an experienced Senior Application Support Engineer to join a growing IT team and play a key role in supporting critical business applications across a modern and complex technology stack.

In this role, you’ll be responsible for:

Investigating and resolving technical incidents, ensuring minimal downtime and effective root cause analysis

Proactively maintaining and optimising applications, performing upgrades and configuration changes

Monitoring system performance, defining service-level objectives, and addressing bottlenecks before they impact users

Collaborating closely with engineering and business teams to drive operational excellence

Enhancing processes, documentation, and tooling to support continuous improvement

What we’re looking for:

Proven experience in an application support or support engineering role, within financial services ideally, or another regulated environment

Strong knowledge of SRE principles, incident management, monitoring, and performance tuning

Hands-on technical skills across a broad range of technologies, including:

Microsoft: C#, VB, .NET Core, Azure, SQL Server, IIS, Windows Server

Web: React, RESTful APIs, Docker, Azure Kubernetes Service (AKS)

Tools: CI/CD pipelines (Azure DevOps), Dynatrace, Git, Okta, Apigee

Excellent communication skills and the ability to work effectively across cross-functional teams

Desirable:

Familiarity with legacy VB/C# applications in a modernised environment

Experience in automation/scripting (PowerShell, Bash)

Background in financial services applications or products

Location: London (hybrid working - 2/3 days a week in the office)

This is a fantastic opportunity to join a collaborative, forward-thinking technology environment where you’ll be empowered to take ownership, solve problems, and contribute to continuous improvement.

If you’re passionate about application support, thrive in complex technical environments, and want to make a real impact, we’d love to hear from you!

React Developer - Fixed Income eTrading

We are seeking experienced React Developers to join the Fixed Income eTrading technology team at a global investment bank. This position is part of a high-profile, multi-year transformation initiative aimed at modernising and scaling a next-generation electronic trading platform for Fixed Income products.

The role is to help build cutting edge Front End systems for Fixed Income eTrading, including Rates, Credit, and Bonds.

You’ll work closely with world-class technologists and domain experts to deliver scalable, high-performance UIs that support Real Time trading and analytics.

Key Responsibilities

Design and develop responsive, low-latency Front End trading systems using React.

Build dashboards and visualisation tools for Fixed Income market data and trade execution.

Collaborate with traders, quants, and Back End engineers to deliver seamless UI experiences.

Contribute to architectural decisions and Front End performance tuning.

Required Skills & Experience

Expertise in React.js and modern JavaScript (ES6+)

Proven experience delivering Front End applications in electronic trading environments

Strong understanding of performance optimisation and low-latency UI design

Experience with Real Time data technologies (WebSockets, FIX, etc.)

Familiarity with containerized Front End platforms such as OpenFin is a plus

Prior exposure to Fixed Income products (Rates, Credit, Bonds) or other capital markets

Experience in data visualisation, charting and grid tools like AG Grid, Highcharts etc

Ability to thrive in fast-paced, Front Office environments with direct business interaction

Passionate about technology, innovation, and solving complex engineering problems

Please submit your CV immediately in order to be considered for this role

Engineering Lead - AI-Native SaaS Platform

Engineering Lead - AI-SaaS Platform | Tripled ARR in 12 months

Remote-first (UK) with hybrid London office option

Up to £150,000 per annum plus equity

Typescript/Node, React, GCP/AWS

Engineering Lead - We’re working with an amazing scale-up who raised a very impressive Series B round earlier in 2025. They are building an AI-native SaaS platform that’s redefining sector and have experienced explosive growth over the past year tripling their ARR. They are scaling their Engineering team to match the ambition of their product and customers.

The Engineering Lead

We’re hiring Engineering Leads to guide small, focused squads (up to 4 Engineers) while remaining hands-on in the codebase. This isn’t a “people manager only” role - around 70% of your time will be technical, leading the design and build of AI-native solutions with Real Time infrastructure and a seamless Front End experience. The remainder will be spent coaching, mentoring, and supporting your team’s growth.

For the first three months, you’ll contribute as an individual contributor, embedding yourself in the product and tech stack before taking on leadership responsibilities.

What you’ll do

Lead a small team of Engineers while staying deeply technical

Contribute across the stack (React, Node.js/Typescript, GCP) with Back End experience highly valued

Shape and deliver high-quality features that scale with thousands of customers

Advocate for engineering best practices and help raise the technical bar

Collaborate with product and design to deliver exceptional user experiences

What you’ll bring

Proven experience leading small teams while still contributing technically

Strong Back End development expertise (Node.js, Typescript; Go a plus)

Familiarity with cloud-native architectures (GCP or AWS)

Excellent communication skills and a collaborative mindset

A balance of technical depth and people-first leadership

This is an amazing opportunity for an Engineering Lead to join a fast-growing scale-up as they take the next leap in their journey. Please reply with your CV of call Simon for a chat.

Engineering Lead - AI-SaaS Platform | Tripled ARR in 12 months

Remote-first (UK) with hybrid London office option

Up to £150,000 per annum plus equity

Typescript/Node, React, GCP/AWS

Burns Sheehan Ltd will consider applications based only on skills and ability and will not discriminate on any grounds.

Senior Product Engineer (Backend) - Typescript/Node

Senior Product Engineer (Backend) - AI-Native SaaS Platform | Tripled ARR in 12 months

Remote-first (UK) with hybrid London office option

Up to £130,000 + equity

Typescript/Node, React, GCP/AWS

Senior Product Engineer - We’re working with a rapidly scaling AI-native SaaS company who raised an impressive Series B round in 2025. Their platform is redefining the sector, and with revenues tripling in the last year to over $12m ARR, they’re now expanding their Engineering team to match the ambition of their product and customers.

The Senior Product Engineer

As a Senior Product Engineer, you’ll be at the heart of designing, building, and scaling Back End systems that power a complex, AI-driven product. You’ll work across the stack with a focus on Back End engineering, solving challenging technical problems while shaping the product experience for thousands of users.

What will the Senior Product Engineer do?

Contribute across the stack (Node.js/Typescript, GCP), with a strong focus on Back End systems

Design scalable architectures and APIs to support rapid product growth

Lead end-to-end feature development, from concept through to release

Champion engineering best practices and bring new ideas to the table

Collaborate closely with Product and Design teams to build seamless user experiences

What will the Senior Product Engineer bring?

Strong Back End development expertise with Node.js and Typescript

Experience designing secure, scalable Back End systems (authentication, data pipelines, APIs)

Familiarity with modern cloud infrastructure (GCP or AWS)

Ability to communicate technical ideas clearly and influence team direction

A passion for building high-quality products that customers love

This is an amazing opportunity for an Senior Product Engineer to join a fast-growing scale-up as they take the next leap in their journey. Please reply with your CV of call Simon for a chat.

Senior Product Engineer (Backend) - AI-SaaS Platform | Tripled ARR in 12 months

Remote-first (UK) with hybrid London office option

Up to £130,000 + equity

Typescript/Node, React, GCP/AWS

Burns Sheehan Ltd will consider applications based only on skills and ability and will not discriminate on any grounds.

Senior Software Engineer - B-Corp | Net-Zero Carbon

Senior Full Stack Software Engineer | B-Corp Start-Up | Net-Zero Carbon

Up to £100,000 plus stock

London - Hybrid (2 days a week in the office)

Typescript, Rust & React

Senior Full Stack Software Engineer - We are working with an amazing Carbon Neutral, B-Corp certified start-up to find them a Senior Full Stack Software Engineer to join their purposely small, experienced engineering team. They have received over $10m in funding in the last two years and as reach break-even in the original market, they have some exciting tech challenges in scaling their sustainable platform as they look to expand their reach.

As a Senior Full Stack Software Engineer in a start-up your role will be multi-faceted:

Designing and building new features to improve the lives of everyone who uses the platform, whether it’s fellow employees or customers.

Improving the tooling and infrastructure to make it easier to scale.

Collaborating with colleagues in engineering and the wider business to innovate and produce new ideas.

Driving design discussions to solve real world problems and deliver on business goals.

The tech stack is predominantly Typescript, Rust and React on GCP, Kubernetes, GraphQL although they are open to engineers from any background.

You should apply if:

You’re excited to build sustainable, net-zero products to disrupt an industry.

You’re love the challenge, opportunity and ambiguity of an early-stage start-up.

You have experience building Back End services and APIs and are comfortable writing code for the Front End or building the infrastructure.

You have a product mindset and are always thinking about how the solution will benefit the customer.

You’re comfortable releasing something that might not be perfect!

This is an amazing opportunity to join an impressive start-up as they look to build on their early successes to scale the platform and the business. Please apply or call Simon Evans for a chat.

Senior Full Stack Software Engineer | B-Corp Start-Up | Net-Zero Carbon

Up to £100,000 plus stock

London - Hybrid (2 days a week in the office)

Typescript, Rust & React

Burns Sheehan Ltd will consider applications based only on skills and ability and will not discriminate on any grounds.

Staff Software Engineer - B-Corp | Net-Zero Carbon

Staff Software Engineer | B-Corp Start-Up | Net-Zero Carbon | Full Stack

Up to £120,000 plus stock

London - Hybrid (2 days a week in the office)

Typescript, React, Node, GraphQL, GCP

Staff Software Engineer - We are working with an amazing Carbon Neutral, B-Corp certified start-up to find them a Staff Software Engineer to join their purposely small, experienced engineering team. They have received over $10m in funding in the last two years and as reach break-even in the original market, they have some exciting tech challenges in scaling their sustainable platform as they look to expand their reach.

As a Staff Software Engineer in a start-up your role will be multi-faceted:

Designing and building new features to improve the lives of everyone who uses the platform, whether it’s fellow employees or customers.

Improving the tooling and infrastructure to make it easier to scale.

Collaborating with colleagues in engineering and the wider business to innovate and produce new ideas.

Driving design discussions to solve real world problems and deliver on business goals.

The tech stack is predominantly Typescript, Node and React with some Rust on GCP, Kubernetes, GraphQL although they are open to engineers from any background.

You should apply if:

You’re excited to build sustainable, net-zero products to disrupt an industry.

You’re love the challenge, opportunity and ambiguity of an early-stage start-up.

You have experience building Back End services and APIs and are comfortable writing code for the Front End or building the infrastructure.

You have a product mindset and are always thinking about how the solution will benefit the customer.

You’re comfortable releasing something that might not be perfect!

This is an amazing opportunity to join an impressive start-up as they look to build on their early successes to scale the platform and the business. Please apply or call Simon Evans for a chat.

Staff Software Engineer | B-Corp Start-Up | Net-Zero Carbon | Full Stack

Up to £100,000 plus stock

London - Hybrid (2 days a week in the office)

Typescript, Rust & React

Burns Sheehan Ltd will consider applications based only on skills and ability and will not discriminate on any grounds.

Backend Engineer

Allegis Global Solutions Limited (AGS)

Location: London, King’s Cross

Duration: 6 months

Client: Multinational pharmaceutical and biotechnology company

We see a world in which advanced applications of Machine Learning and AI will allow us to develop novel therapies to existing diseases and to quickly respond to emerging or changing diseases with personalized drugs, driving better outcomes at reduced cost with fewer side effects. It is an ambitious vision that will require the development of products and solutions at the cutting edge of Machine Learning and AI. We’re looking for a highly skilled software engineer to help us make this vision a reality.

Competitive candidates will have a track record of writing and shipping quality, well-documented and well-tested software - preferably in the AI/ML industry. Candidates should be comfortable with modern, cloud-native computing, and with continuous development and production deployment on cloud platforms to large user populations. Educational or professional background in the biological sciences is a plus but is not necessary; passion to help therapies for new and existing diseases, and a pattern of continuous learning and development is mandatory.

The AI/ML team is built on the principles of ownership, accountability, continuous development, and collaboration. We hire for the long term, and we’re motivated to make this a great place to work. Our leaders will be committed to your career and development from day one.

Key responsibilities

Back End development for a Python web application

Integration of AI/ML components with Front End, Back End, data and compute infrastructure

Responsible for high quality software implementations according to best practices, including automated test suites and documentation

Develop, measure, and monitor key metrics for all tools and services and consistently seek to iterate on and improve them

Participate in code reviews, continuously improving personal standards as well as the wider team and product

Liaise with other technical staff and data engineers in the team and across allied teams, to build an end-to-end pipeline consuming other data products

Basic qualifications:

Demonstrated experience of Python Back End development (eg using FastAPI)

Bachelors degree in a relevant field (including computational, numerate or life sciences), or equivalent experience

Cloud experience (eg Google Cloud and cloud run preferred OR Spark and big querry) including core web application infrastructure is essential

Strong skills in Python

Unit testing experience (eg pytest)

Knowledge of agile practices and able to perform in agile software development environments

Strong knowledge of modern software development tools/ways of working (eg git/GitHub, DevOps tools for deployment) - should be able to show practice of commit early and deploy often

Preferred qualifications:

Experience with Docker or containerized applications, especially architecture of multi-container applications

Demonstrated experience with biological or scientific data (eg genomics, transcriptomics, proteomics), or pharmaceutical industry experience

Knowledge of AI/ML approaches and deployment of AI/ML powered applications - especially using language models or NLP and agent-based approaches (eg LangGraph, PydanticAI, AutoGen)

Knowledge of AI/ML evaluation and benchmarking approaches, experience with iterative improvement of AI/ML models and products

Some experience with Front End software development (eg React)

DevOps/Cloud Engineer

Senior DevOps/Cloud Engineer

Own AWS infrastructure, data pipelines, and web apps

Location

London/Remote

Start and duration

Start ASAP, full time

Duration TBD, long term

Context

Company is building a new commodities trading desk

A Technical Director has just been onboarded for this project

You will be the Director’s right hand and senior technical specialist

technical stack

AWS. Strong hands-on with CDK and Projen in TypeScript. EKS, ECR, VPC, IAM, Aurora PostgreSQL

Kubernetes. EKS and k3s. kubectl, Helm, Lens, k9s

Docker. arm64 and amd64 images. Alpine and Ubuntu

Python. Advanced. Building tools and data grabbers. Jinja. Conda and pip envs

TypeScript and JavaScript. Advanced. Node.js and React

SQL. Strong. PostgreSQL, PL/pgSQL, indexing, partitioning. pg_partman

Git-first workflow. GitHub Actions for CI and data jobs

Apache Superset. Operate on AWS, tune, extend, and read source as needed

Charts. ECharts or similar for static analytics

Networking. WireGuard site-to-site and client VPNs

Linux. Power user and admin skills

Key responsibilities

Maintain and improve AWS infra with CDK and Projen. Enforce code quality and security. Manage access

Run and secure Kubernetes workloads on EKS. Monitor and troubleshoot containers

Operate Apache Superset. Maintain custom Python tooling around it. Integrate SSO with Azure AD via AWS AD Connector

Build and operate data pipelines. Python grabbers on EKS. Logging, monitoring, alerts. dbt models. CI with GitHub Actions

Administer Aurora PostgreSQL. Scale clusters. Optimize SQL. Add partitioning with pg_partman

Ship web analytics. Export data from Superset or PostgreSQL to static JSON. Render charts with ECharts on the website

Full Stack Engineer C# .Net Core JavaScript

Full Stack Engineer / Developer (C# .Net Core JavaScript AWS) St Albans / WFH to £100k

Opportunity to progress your career in a hands-on role at a technology driven trading company that invest in Sports betting markets, with a flat structure where you will get your voice heard and can make a real impact on the bottom line, earning significant bonuses.

What’s in it for you:

As a Full Stack Engineer / Developer you will earn a competitive package:

Salary to £100k

Bonus

25 days holiday, rising to 30 after 2 years

Enhanced parental leave

Contributory pension scheme

Private Medical

MSDN subscription

Discounts for gym membership, travel and cinema

Sabbatical after 10 years of service

Flexible working with 2 days work from home per week in a hybrid model

Your role:

As a Full Stack Engineer you’ll join an Agile development team to design and develop new features and enhancements to complex Payments and client systems within a microservices environment (300 services). You’ll be working with a modern tech stack using C# .Net Core, AWS, Kubernetes, Kafka, Redis and TypeScript / Angular; using the right tool for the job, you’ll be able to pick up new technologies and make recommendations for improvements.

Location / WFH:

You’ll join colleagues in St. Albans, Hertfordshire (parking available), 10 minute walk from local station, with the flexibility to work from home twice a week.

About you:

You have strong C# .Net Core backend development skills

You have JavaScript experience, combined with Angular or React

You have experience with AWS and microservices

You have a thorough understanding of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, Algorithms

You enjoy collaborating, learning new things and sharing knowledge

You are degree educated in Computer Science or closely related discipline

Apply now to find out more about this Full Stack Engineer / Developer (C# .Net Core JavaScript) opportunity.

Senior Mobile Developer

Senior Full Stack Mobile Developer

Tech: React Native, JavaScript, Android, iOS

Why? start-up financial services, revolutionising the industry

Location: Hybrid - 2 days in the office (Central London)

Salary: £80,000 - £100,000 benefits

Our Client

A new UK-based financial services provider is launching credit card, personal loans and insurance offerings aimed at delivering fair, flexible, and user-friendly financial products to consumers. The organisation is committed to empowering individuals by enhancing their understanding and control of personal finance through clarity, intelligence, and technology.

Senior Full Stack Mobile Developer - Responsibilities

Design, develop, and maintain advanced applications using React Native.

Collaborate with cross-functional teams to define, design, and ship new features.

Optimize components for maximum performance across a vast array of web- capable devices and browsers.

Maintain code and write automated tests to ensure the product is of the highest quality.

Lead the development team in implementing methodologies that enhance project quality and speed.

Troubleshoot and debug to optimize performance.

Provide code reviews, feedback, and mentorship to junior developers.

Stay up-to-date with new technology trends, applications, and protocols

Senior Full Stack Mobile Developer - Experience Required

Proven track record of developing and maintaining high-quality mobile applications using React Native from concept through to launch.

Focus on how app integrates across entire system i.e. full stack.

Experience in a start-up environment.

Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field, or equivalent experience.

Deep understanding of React Native and its core principles.

Prior experience with iOS and Android platforms, having a deep understanding of the ecosystem differences.

Familiarity with RESTful APIs and mobile libraries for networking.

Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.

Experience with automated testing suites, like Jest or Mocha.

Excellent problem-solving skills and the ability to think algorithmically.

Experience with cloud message APIs and usage of push notifications.

Knowledge of CI/CD pipelines, code signing, and deployment (App Store, Google Play).

Understanding of secure coding practices.

Excellent written and verbal communication skills

For more information, contact Katie at Matched Group. Full Stack Mobile Engineer / Full Stack Mobile Developer / Mobile Engineer / Mobile Developer / App Developer / App Engineer

Senior Mobile Engineer

Senior Full Stack Mobile Engineer

Tech: React Native, JavaScript, Android, iOS

Why? start-up financial services, revolutionising the industry

Location: Hybrid - 2 days in the office (Central London)

Salary: £80,000 - £100,000 benefits

Our Client

Senior Full Stack Mobile Engineer -Responsibilities

Design, develop, and maintain advanced applications using React Native.

Collaborate with cross-functional teams to define, design, and ship new features.

Optimize components for maximum performance across a vast array of web- capable devices and browsers.

Maintain code and write automated tests to ensure the product is of the highest quality.

Lead the development team in implementing methodologies that enhance project quality and speed.

Troubleshoot and debug to optimize performance.

Provide code reviews, feedback, and mentorship to junior developers.

Stay up-to-date with new technology trends, applications, and protocols

Senior Full Stack Mobile Engineer -Experience Required

Proven track record of developing and maintaining high-quality mobile applications using React Native from concept through to launch.

Focus on how app integrates across entire system i.e. full stack.

Experience in a start-up environment.

Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field, or equivalent experience.

Deep understanding of React Native and its core principles.

Prior experience with iOS and Android platforms, having a deep understanding of the ecosystem differences.

Familiarity with RESTful APIs and mobile libraries for networking.

Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.

Experience with automated testing suites, like Jest or Mocha.

Excellent problem-solving skills and the ability to think algorithmically.

Experience with cloud message APIs and usage of push notifications.

Knowledge of CI/CD pipelines, code signing, and deployment (App Store, Google Play).

Understanding of secure coding practices.

Excellent written and verbal communication skills

For more information, contact Katie at Matched Group. Full Stack Mobile Engineer / Full Stack Mobile Developer / Mobile Engineer / Mobile Developer / App Developer / App Engineer

Infrastructure Automation Engineer X3-Aruba- DevOps- Network Automation

Infrastructure Automation Engineer X3-Aruba- DevOps- Network Automation

Network Infrastructure Automation Engineer X3 with strong skills in network automation and ideally expereince of migrating networks from Cisco to Aruba, is needed to support our higher education client drive forward the automation of their network automation, which is the largest across the UK higher education sector.

The scope will be to design, implement and test the automation of Network Infrastructure development which enables a scalable, secure, automated and resilient network service across our clients network estate.

Infrastructure Automation Engineer X3-Aruba- DevOps- Network Automation

Essential Expereince

Experience of network system particularly Aruba technology stack, ideally with expereince of migrating from Cisco to Aruba.

Expereince of working on large scale network transformation programmes

Technical lead of infrastructure-as-code (IaC), automation, deployment, configuration, management and scaling.

Network infrastructure automation using DevOps practices.

Strong hands-on experience with: Terraform, Ansible, or similar IaC tools CI/CD tools (e.g., Jenkins, GitLab CI, Azure DevOps) AND Cloud platforms (AWS, Azure, or GCP)

Solid understanding of networking concepts (TCP/IP, DNS, routing, VPNs, firewalls).

Familiarity with monitoring and logging tools (e.g., Prometheus, Grafana, ELK).

Scripting skills including Python and React.

Expereince of working within an Agile environment including using Jira and ideally SAFe scaled Agile expereince.

Ability to build automated pipelines and orchestration frameworks for hybrid environments (on-premises, private/public cloud) including automation testing.

Skills to integrate infrastructure automation into CI/CD pipelines for seamless deployment.

Ability to design and implement Infrastructure as Code (IaC) using Terraform, Ansible and GitHub.

Skills to automate provisioning and configuration of network infrastructure ( firewalls, load balancers, VPNs, SD-WAN).

Expereince of the development of reusable patterns, modules, templates and playbooks that ensure consistency, auditability, and rapid service enablement.

6 Month initial contract with scope for a long term extension

£550-£600 per day inside IR35

Hybrid working with 1-2 days on site in London

InterQuest Group is acting as an employment agency for this vacancy. InterQuest Group is an equal opportunities employer and we welcome applications from all suitably qualified persons regardless of age, disability, gender, religion/belief, race, marriage, civil partnership, pregnancy, maternity, sex or sexual orientation. Please make us aware if you require any reasonable adjustments throughout the recruitment process.

Full Stack Engineer TypeScript

Full Stack Engineer / Developer (TypeScript) London to £75k

Opportunity to progress your career at a Tech for Good company that is enabling life changing education to be accessed by students around the world.

As a Full Stack Engineer you will design and develop large, distributed, scalable web based systems, working within a modern cloud (AWS) microservices based environment; you’ll be primarily using Typescript and Node for backend development, but will also have exposure to React on the frontend. You’ll work across multiple teams and product streams in a collaborative environment that values code quality.

The company are passionate about providing excellent education to hundreds of thousands of students around the world and support a number of causes and cutting edge research projects that improve the way people learn via real-time, live streaming technology as well as Video on Demand.

Location:

You’ll join colleagues in the London office four days a week, with flexibility to work from home on Fridays.

About you:

You have strong full stack web development experience using TypeScript and Node.js

You understand AWS, microservices, APIs, Event Driven systems, Data Streaming (Kafka), DevOps environments, CI/CD pipelines and how to deploy to the cloud, they use CloudFlare

You’re happy to do some front end work with React

You have experience of working on large scale systems with millions of users

You’re comfortable with AI

You’re collaborative with Agile team experience

What’s in it for you:

As a Full Stack Engineer / Developer (TypeScript) you will receive a competitive package:

Salary to £75k

25 days holiday

Private medical insurance

Training and certifications

Perks such as restaurant and retail discounts

Apply now to find out more about this Full Stack Engineer / Developer (TypeScript) opportunity.

Backend Software Engineer C# .Net - Asset Management

Backend Software Engineer / Developer (C# .Net) London onsite to £150k

Are you an experienced C#, backend focussed Software Engineer?

You could be progressing your career in a senior, hands-on role at a global Asset Manager with c$3 million under management, earning substantial bonuses.

As a Backend Software Engineer within the trading engine team you’ll collaborate to design and develop real-time trading systems, you’ll often be collaborating with he strategy team on Greenfield projects which you’ll take ownership of and will see the business impact of. There’s a focus on backend and API development although you’ll also have elements of front end work with JavaScript and React.js.

Location:

You’ll be based in plush City office on a fulltime basis, Monday to Friday.

About you:

You have expertise with C# .Net, ASP.Net development

You have a strong knowledge of databases (SQL or Oracle)

You’re comfortable with JavaScript / React

You have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, Algorithms

You are collaborative with excellent communication and stakeholder management skills

You are degree educated in Computer Science or similar technical discipline

What’s in it for you:

As a Backend Software Engineer / Developer you will receive a competitive package:

Salary to £150k

Bonus paid every six months based on personal performance (10-25%)

Professional development

Pension

Health Insurance

Gym membership

Social events, free fruit, snacks, coffee etc.

Apply now to find out more about this Backend Software Engineer / Developer (C# .Net) opportunity.

Fullstack Software Engineer

Understanding Recruitment

Salary: £70k - £140k+ Stock Options + Exceptional Benefits

Location: London based team

We’re hiring on behalf of a cutting-edge tech company that’s reimagining how software gets built - combining full-code flexibility with the power of no-code tools and generative AI into a unified platform.

You’ll work on a tool that lets developers and teams create UIs, workflows, and backends - faster and smarter. Think: Python interpreter + visual UI + no-code workflows + GenAI.

This role suits engineers with strong Python and frontend experience (Vue + TypeScript preferred, React is fine too), and a passion for building tools for developers.

What you’ll do:

Build core parts of their low-code UI and no-code workflow builder

Shape backend architecture with Python (Pydantic, Mypy, Pytest, etc.)

Contribute across both frontend and backend

Define engineering best practices for typing, testing, CI/CD, and code quality

Integrate AI agent tooling and third-party APIs

Collaborate with product, design, and infra teams to build real-time collaboration features

The ideal candidate will have:

1+ year of fullstack experience (open to senior/staff-level engineers too)

Production experience with Model Context Protocol (MCP) is highly desired

Experience working with LLMs, RAGs, Langchain, OpenAI, Claude etc is beneficial

Generative AI Product experience

Production-grade Python skills

Frontend experience with Vue + TypeScript, or React and a willingness to learn Vue

Understanding of web performance, testing, REST APIs, OAuth

Comfort working in fast-paced, ambiguous environments

Bonus: experience with devtools, no-code/low-code, AI tools, or OSS contributions

This is a rare chance to learn from elite engineers and contribute directly to a really useful platform as a Fullstack Engineer.

If you’re a technically curious Fullstack engineer, ready to grow in a fast-paced AI environment, apply now!

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