40 back end developer jobs found

Company Description At Data Intellect , we thrive on solving complex data challenges in high-stakes environments. We’re a team of engineers, problem-solvers, and collaborators who believe in pushing boundaries, not egos. If you're a seasoned C++ Developer ready to lead, innovate, and make an impact, we want to hear from you. Job Description As a C++ Developer at [DI], you will focus on developing Front Office Trading software, primarily working within the market data development teams. You will gain exposure to the full software stack, using modern development tools and concepts to deliver high quality, best practice software solutions. This will involve working on the end-to-end development of low latency software components written in C++. Project responsibilities will range from design, architecture and development of greenfield projects to maintenance, latency tuning and enhancements. Qualifications 4+ years’ experience of...

Waracle are looking for a Senior Mobile Security Developer (Inside IR35) for an exciting new 6-month initial contract joining our world-class digital technology consultancy, home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation.   We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations.   This is a UK-based Inside IR35 Contract role, offering the flexibility to balance your professional and personal life, with 2 days a week spent connecting with colleagues in our London or Edinburgh office or on client site. The Role As a Senior Mobile Security Developer, you will define squad-level technical architecture...

Waracle are looking for a Senior Mobile Security Developer (Inside IR35) for an exciting new 6-month initial contract joining our world-class digital technology consultancy, home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation.   We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations.   This is a UK-based Inside IR35 Contract role, offering the flexibility to balance your professional and personal life, with 2 days a week spent connecting with colleagues in our London or Edinburgh office or on client site. The Role As a Senior Mobile Security Developer, you will define squad-level technical architecture...

Location: Remote first (2-3 days on site in the North East during week one) Start: November 2026 Duration: 3 months initial, 5 days per week Rate: Around £650 per day depending on experience, Outside IR35 Sector: Financial services About the opportunity Crosstide is looking for a hands-on Principal Platform Engineer to join a financial services client building a new Automated Developer Platform on Google Cloud. The platform runs in its own GCP organisation alongside the client's existing estate, and the first teams to adopt it are building savings services in Go, using Kafka and databases. You'll be one of three Crosstide engineers Embedded in the client's small platform team for phase one, a three-month push to strengthen the shared platform services and add observability, developer experience and disaster recovery. This is a hands-on build role, not a design-only one. The team has a strong bias for action, is happy to try things and throw code away,...

Company Description At Data Intellect , we thrive on solving complex data challenges in high-stakes environments. We’re a team of engineers, problem-solvers, and collaborators who believe in pushing boundaries, not egos. If you're a seasoned C++ Developer ready to lead, innovate, and make an impact, we want to hear from you. Job Description As a C++ Developer at [DI], you will focus on developing Front Office Trading software, primarily working within the market data development teams. You will gain exposure to the full software stack, using modern development tools and concepts to deliver high quality, best practice software solutions. This will involve working on the end-to-end development of low latency software components written in C++. Project responsibilities will range from design, architecture and development of greenfield projects to maintenance, latency tuning and enhancements. Qualifications 4+ years’ experience of...

Waracle are looking for a Senior Mobile Security Developer (Inside IR35) for an exciting new 6-month initial contract joining our world-class digital technology consultancy, home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation.   We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations.   This is a UK-based Inside IR35 Contract role, offering the flexibility to balance your professional and personal life, with 2 days a week spent connecting with colleagues in our London or Edinburgh office or on client site. The Role As a Senior Mobile Security Developer, you will define squad-level technical architecture...

Waracle are looking for a Senior Mobile Security Developer (Inside IR35) for an exciting new 6-month initial contract joining our world-class digital technology consultancy, home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation.   We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations.   This is a UK-based Inside IR35 Contract role, offering the flexibility to balance your professional and personal life, with 2 days a week spent connecting with colleagues in our London or Edinburgh office or on client site. The Role As a Senior Mobile Security Developer, you will define squad-level technical architecture...

Job Overview We're a small but growing marketing agency based in Canterbury with clients throughout Kent and London. The role: WordPress Developer, you should have in-depth knowledge of front-end programming languages, a good eye for aesthetics, and strong content management skills. Ultimately, we're looking for a WordPress Developer who can create attractive, user-friendly websites that perfectly meet the design and functionality specifications of our clients. The role is responsible for designing and modifying websites, from layout to function and according to a client's specifications. WordPress Developer Responsibilities: Meeting with clients to discuss website design and function. Designing and building the website front-end. Creating the website architecture. Designing and managing the website back-end including database and server integration. Generating WordPress themes and plugins. Conducting website performance tests. Troubleshooting...

Company Description At Data Intellect , we thrive on solving complex data challenges in high-stakes environments. We’re a team of engineers, problem-solvers, and collaborators who believe in pushing boundaries, not egos. If you're a seasoned C++ Developer ready to lead, innovate, and make an impact, we want to hear from you. Job Description As a C++ Developer at [DI], you will focus on developing Front Office Trading software, primarily working within the market data development teams. You will gain exposure to the full software stack, using modern development tools and concepts to deliver high quality, best practice software solutions. This will involve working on the end-to-end development of low latency software components written in C++. Project responsibilities will range from design, architecture and development of greenfield projects to maintenance, latency tuning and enhancements. Qualifications 4+ years’ experience of...

AI Data Scientist (12 Month Day Rate Contractor) Job Introduction Handelsbanken combines a long-established relationship banking model with secure, resilient, and customer-focused technology. Our technology teams enable the Bank's decentralised way of working, delivering systems built for stability, trust, and long-term value. We are on a multi-year technology and digital transformation journey to enhance customer experience and improve how colleagues work together. By modernising platforms, simplifying processes, and better connecting data and systems, we help relationship teams focus on customers and less on complexity. Our decentralised culture extends to technology. Teams are trusted to take ownership, make informed decisions, and deliver sustainable, high-quality solutions. We value engineering excellence, pragmatic problem-solving, and strong collaboration across technology, business, and risk. We offer technologists the opportunity to build lasting careers, deepen...

Strategic VA Programme Manager Location: Norwich, NR1 3NS IR35 Status: Inside IR35 Contract Duration: 6 months   A bit about the job   We're looking for an experienced Strategic Virtual Assistant (VA) Programme Manager to lead Aviva’s end-to-end Virtual Assistant transformation programme, overseeing strategy, design, delivery and governance.   Working across business, digital, data, technology and operational teams, you'll be responsible for bringing together multiple workstreams to deliver a coordinated and successful programme.   You'll work closely with senior stakeholders across Aviva, BCG, Group CIO teams and specialist functions, including Risk, Compliance, Legal and Architecture, ensuring alignment on priorities, delivery milestones and strategic outcomes.   This is a key leadership role requiring strong programme management, structured planning and stakeholder engagement skills, alongside a...

We are recruiting for a Contract Senior Java / Kotlin Engineer.  On-site: 2 dpw in Leeds Key skills: strong experience in Java or Kotlin (back-end), and comfortable with TDD (test-driven development). Start date: ASAP Who We Are: AND Digital are a tech company focused on accelerating digital delivery and dedicated to closing the digital skills gap. We’ve been helping organisations build better digital products and stronger digital teams since 2014. We believe our work should always make a remarkable impact for our clients. We do this through our regional offices (or ‘Clubs’) building strong relationships with our partners, so that they are always prioritised by a team within close proximity.  This unique model has driven success for our clients and ourselves, evidenced by our remarkable organic growth since 2014. Today we number more than 1,300 people with Clubs all over the UK, Europe and the USA with plans for global...

Posted 1 hour ago  Contract  Competitive     AI Engineer - 12 Month Day Rate Contract Job Introduction Handelsbanken combines a long-established relationship banking model with secure, resilient, and customer-focused technology. Our technology teams enable the Bank's decentralised way of working, delivering systems built for stability, trust, and long-term value. We are on a multi-year technology and digital transformation journey to enhance customer experience and improve how colleagues work together. By modernising platforms, simplifying processes, and better connecting data and systems, we help relationship teams focus on customers and less on complexity. Our decentralised culture extends to technology. Teams are trusted to take ownership, make informed decisions, and deliver sustainable, high-quality solutions. We value engineering excellence, pragmatic problem-solving, and strong collaboration across technology, business, and...

Principal Information Security Consultant (Day rate Contract) Contract Type Day Rate Contractor Closing Date 18 November, 2026 Job Category Tech, Data and Digital Business Unit Information Security & Privacy (UKTI) Location London, United Kingdom Posted on 19 October, 2026 Job Introduction Handelsbanken combines a long-established relationship banking model with secure, resilient, and customer-focused technology. Our technology teams enable the Bank's decentralised way of working, delivering systems built for stability, trust, and long-term value. We are on a multi-year technology and digital transformation journey to enhance customer experience and improve how colleagues work together. By modernising platforms, simplifying processes, and better connecting data and systems, we help relationship teams focus on customers and less on complexity. Our decentralised culture extends to technology. Teams are trusted to...

Automation Tester (Day rate contract) Contract Type Day Rate Contractor Closing Date 18 November, 2026 Job Category Tech, Data and Digital Business Unit Quality Assurance (UKTX-Q) Location London, United Kingdom Posted on 19 October, 2026 Job Introduction Handelsbanken combines a long-established relationship banking model with secure, resilient, and customer-focused technology. Our technology teams enable the Bank's decentralised way of working, delivering systems built for stability, trust, and long-term value. We are on a multi-year technology and digital transformation journey to enhance customer experience and improve how colleagues work together. By modernising platforms, simplifying processes, and better connecting data and systems, we help relationship teams focus on customers and less on complexity. Our decentralised culture extends to technology. Teams are trusted to take ownership, make informed decisions,...

We are currently on the lookout for a Scrum Master to join our team on a contract basis. Our Scrum Masters follow mature Agile methods holding a mix of Project Management and Scrum Master responsibilities. Projects that you will deliver are enterprise grade web-based solutions that will see you work alongside developers, Business Analysts and external client stakeholders such as Product Owners. Personality is key and you need to fit the role as well as the team in equal measure. ITG prides itself on its culture and every new individual will need to be hard working, enthusiastic and willing to help. Ideally, we are looking for Midlands-based individuals who are happy to work on a hybrid model, with 2 days in the office and 3 days remote. However, we are also open to hiring remote workers in the UK, as long as you are prepared to travel to the Midlands from time to time. Am I the right person for the job? You are great at managing and motivating sprint teams in a...

Job Title: AI Roku Developer Location: London Company: BritBox International Reporting to: SVP of Technology and Content Delivery Contract Type: Day rate Contractor, 3-month About Us BBC Studios’ Direct-to-Consumer (DTC) business brings premium content directly to North American audiences through two distinctive streaming brands: BritBox and BBC Select. BritBox , the ultimate streaming destination for British TV. We offer an unparalleled collection of thoughtfully curated entertainment—cleverly crafted and full of the charm, wit, and heart that define British storytelling. Born from the BBC, our mission is to bring authentic British stories to our audiences. Launched in 2017, we are a small but mighty streamer that punches above our weight—available on every major platform and even featured among the bright lights of Times Square—and we’re just getting started. BBC Select is a documentary streaming service that has been...

ITG require a talented Solutions Architect to work on the development of a range of web based products and tools. The focus for this role is on the development of websites driven by the Adobe Experience Manager CMS. The Solutions Architect will act as an internal Adobe AEM consultant, advising teams and clients on how best to develop customer-facing digital platforms and experiences, supporting and advising on projects and stakeholders that would like to take advantage of AEM’s capabilities. This support would be in the form of technical guidance and consultancy on recommended technical and architectural approaches to deliver a range of implementations, whether that is a small/skinny brochure site, through to larger scale more complex projects. As a Solutions Architect, candidates must be capable not only of supporting software development, but also demonstrate a firm grasp of the full Software Development lifecycle: requirements capture, planning, project...

Network Solution Architect/Technical Lead Location: London (2-3 days/Hybrid) Job Overview We are seeking an experienced Network Solution Architect/Technical Lead to lead the end-to-end design, delivery and implementation of enterprise network solutions across LAN, WAN, WLAN, Data Centre, SD-WAN, Security and Cloud environments. The successful candidate will act as the technical authority, ensuring network solutions are scalable, secure, resilient and aligned with business requirements and technical standards. Key Responsibilities Lead network architecture, solution design and technical governance across enterprise infrastructure projects. Develop, review and approve High-Level Designs (HLDs), Low-Level Designs (LLDs) and technical documentation. Provide technical expertise across LAN, WAN, WLAN, Data Centre, SD-WAN, Security and Cloud connectivity. Conduct requirements gathering, project scoping, technical assessments and risk analysis. Review...

We’re on a mission to back the UK’s small businesses like no one else Small businesses are the backbone of the economy, and we’re here to help them win. We’ve built a platform that uses clever data to get them the funding they need in minutes, not weeks.   At Funding Circle, we have the restless energy of a fintech start-up with the stability of a public company. It’s a unique mix that gives Circlers the autonomy to take ownership and the scale to make an impact that truly counts.   We’re a high-performing team that chooses to lift each other up. We challenge, we champion, and we have each other’s backs - because we know that when we stand together, we move faster and build better.   The impact is real: Last year alone, the businesses on our platform generated £7.2bn for the UK economy Come and join a mission that matters! [Read our Impact Report] | [See our Trustpilot]  ...