26 to 43 of 43 Senior Software Developer Jobs in the UK

Role: Senior Software Developer in Test - Security Cleared Job Type: Contract IR35 Status: Inside IR35 Please note this role requires active Security Clearance. About Scale Factory We are an AI enablement consultancy. Delivering quality-led AI-first foundations, embedding capability and excellence into the foundational fabric … lookout for passionate, talented individuals who are ready to make an impact. Whether you’re an experienced automation tester or a developer with a flair for QA, we want to hear from you. We look forward to your application. #J-18808-Ljbffr ...

Marex is seeking a Market Making Senior Software Developer in London to design, develop and maintain high‐quality applications across internal and client-facing platforms. You will build scalable services, collaborate with product owners and engineers, and help shape platform standards within a technology-driven market making … context. You will work in a dynamic, regulated environment, applying modern CI/CD, DevOps and testing practices to deliver reliable software and improve operational #J-18808-Ljbffr ...

United States Digital Space LLC is hiring a Senior Software Developer to design and scale secure digital services for the UK government. The role requires expertise in cloud-native application development, particularly using Java and AWS. Successful candidates will work in agile teams, ensuring compliance with ...

Scale Factory, an AI enablement consultancy in the United Kingdom, is seeking a Senior Software Developer in Test to design and build cutting-edge automation frameworks and testing solutions. You will lead small teams, set QA strategy, and ensure client outcomes align with business needs. Hybrid work ...

next-generation Agent Platform to power intelligent automation, AI-driven workflows, and tool-enabled execution across our product ecosystem. We are seeking a Senior Software Developer to design and build core services that enable secure, scalable, and observable AI agent execution. This role focuses on deep technical … product and engineering teams integrating with the Agent Platform Provide technical guidance on best practices and integration patterns Contribute to reusable infrastructure components and developer tooling Skills and experience we value Able to work with a distributed team Strong understanding of object-oriented design and development 5+ years ...

description: Are you an experienced Software Engineer who enjoys solving complex technical challenges, influencing engineering decisions, and mentoring others while remaining hands-on with code? Do you thrive in agile environments, embrace modern engineering practices, and want to work on projects that genuinely make a difference … love to hear from you. We're partnering with a growing, mission-led technology consultancy delivering secure, scalable software solutions for the UK Government and Defence sector. Their teams build modern digital platforms and mission-critical systems that support some of the UK's most important national programmes. This ...

Senior Java Developer Newcastle Hybrid (3 days onsite) Up to £60,000 plus bonus We're working with a leading global technology and professional services organisation that delivers innovative digital, cloud and engineering solutions across a wide range of industries. This is an opportunity to join a highly ...

employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. As a Senior Software Engineer (Backend), you will play a key role in designing and building scalable, cloud-based services using Java and Spring Boot. … this role, you are expected to lead by example through strong technical execution, thoughtful system design, and a commitment to engineering excellence. As a senior engineer you will contribute to architectural decisions, mentor other engineers, and help drive continuous improvement across the team. What You’ll Do Design, build ...

description: Are you an experienced Software Engineer who enjoys solving complex technical challenges, influencing engineering decisions, and mentoring others while remaining hands-on with code? Do you thrive in agile environments, embrace modern engineering practices, and want to work on projects that genuinely make a difference … love to hear from you. We're partnering with a growing, mission-led technology consultancy delivering secure, scalable software solutions for the UK Government and Defence sector. Their teams build modern digital platforms and mission-critical systems that support some of the UK's most important national programmes. This ...

have the autonomy and support to make an impact as we build for the long term. About the role: the company is hiring a Senior Software Engineer II to join our Operational Excellence (OPX) team within the Developer Experience organization. DevEx is responsible for the engineering environment … with product engineering teams to strengthen their operational posture. You should apply if: You want to impact the industries that run our world: The software, firmware, and hardware you build will result in real-world impact - helping to keep the lights on, get food into grocery stores, and most ...

Senior Staff Software Engineer Belfast | Hybrid | Permanent At a Glance Senior technical leadership role with real influence on architecture and delivery Distributed systems focus powering reporting, analytics, and client-facing dashboards High data volumes and complex, performance-critical applications Hybrid working from Belfast Salary … globally distributed teams What's In It For You Competitive salary of up to £90,000 Private healthcare Pension scheme Hybrid working from Belfast Senior leadership role with genuine architectural influence Work on large-scale, high-impact data and analytics systems If you're interested or have any further ...

transforming the legal experience for all by bettering the lives of legal professionals while increasing access to justice. We are currently seeking a Senior Full‐Stack Software Engineer to join our Sharedo engineering team in Alderley Edge, Cheshire UK. The Sharedo engineering team builds and maintains an innovative … Server, including query optimisation, indexing, execution plans and performance tuning. Solid understanding of HTML5, CSS3, Flexbox and CSS Grid. 5+ years of varied software engineering experience, ideally including scalable systems. Experience with distributed systems, monoliths or microservices. A keen interest in improving your craft by using AI. Bonus points ...

seeking a highly experienced Software Engineer to lead the design, development, and fdelivery of mission-critical financial systems on a modern Microsoft Azure and SQL Server technology stack. In this role, you will partner directly with business stakeholders, subject matter experts, and cross-functional teams to analyse complex financial … problems and translate requirements into scalable, high-performance software solutions. As a senior member of the development team, you will take ownership of the end-to-end development lifecycle—from architecture and design through coding, testing, deployment, and ongoing support—ensuring that our business-critical applications meet ...

where appropriate) Clearance: Must be eligible and willing to undergo DV clearance (British Citizen, UK residency last 10 years) Are you a proven embedded software engineer who thrives on hard problems and real-world constraints? Want to design and deliver operational tooling directly alongside end users in National Security … Defence Were looking for a senior technical contributor who can take ownership of embedded deliveries, guide technical direction, and mentor othersworking across ESP32, Raspberry Pi, and ARM platforms. What Youll Do Lead development of bespoke embedded solutions across multiple platforms. Design, implement, and maintain production-quality C, C++ ...

where appropriate) Clearance: Must be eligible and willing to undergo DV clearance (British Citizen, UK residency last 10 years) Are you a proven embedded software engineer who thrives on hard problems and real-world constraints? Want to design and deliver operational tooling dir... WKCL1_UKTJ ...

company. If you’re excited about building something special with us, we’d love to hear from you. About the role We're seeking Senior Python Developers to join our back-end development team. This is a varied and challenging programming role. Tasks could include writing code to manage … Technical Task or Presentation – A role-relevant exercise to demonstrate your skills and approach. Final On-site Interview – An in-person meeting with our senior leadership team and co-founders at our office. We strive to make the process clear, efficient, and respectful of your time. We welcome ...

integral part of an agile team that's constantly pushing the envelope to enhance, build, and deliver top-notch technology products. As a Senior Lead Software Engineer at the company within the Equities Sales and Trading Technology, you are an integral part of an agile team that works … peer review, automated testing) and promoting reuse of proven patterns and automation within the SDLC/TLM toolchain. Applies knowledge of tools within the Software Development Life Cycle toolchain, including approved AI-assisted development and automation capabilities, to improve the value realized by automation at scale. Drives decisions that ...

Regular Job Code: A152351A Responsibilities Design, develop, and continuously evolve the company’s R&D infrastructure across build systems, artifact management, data distribution, and software supply chain. Deliver stable, efficient, and easy-to-use platform capabilities that support multiple programming languages, hardware architectures, and global software delivery; Build … remediation, advancing AI from assisted analysis toward closed-loop resolution; Architect and optimize large-scale distributed systems to continuously improve throughput, reliability, observability, and developer experience. Work closely with engineering, security, infrastructure, and AI business teams to understand real-world requirements and drive complex projects from design to adoption ...