51 to 65 of 65 Senior Software Engineer Jobs in the City of London

Senior Back End Engineer. Tech stack: TypeScript, React, Node Day rate: £500-650/day, outside IR35 Office: 3 days in London A rapidly scaling Tech4Good business, working closely with AI, is looking for experienced Engineers to join their Back End and product-centric team. The role involves working in a collaborative environment on meaningful Engineering challenges, which impact More ❯

Senior Python Engineer – Data & Distributed Systems Location: London (Hybrid) Type: Full-time, Permanent Salary: £120,000+ Equity Options Sector: FinTech About The Role My client is a mission-driven company within the Fin-Tech industry who is looking for a Senior Python Engineer to join their space. What You’ll Do Architect and build scalable backend More ❯

Senior Java Developer - Java, Springboot & AWS – paying up to £600/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. This is a unique opportunity to work in an agile, high More ❯

Senior Java Developer - Java, Springboot & AWS – paying up to £600/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. This is a unique opportunity to work in an agile, high More ❯

foundation for future service innovation. Integration across diverse technologies ensures Sky's award-winning products remain intuitive, high-quality, and impactful. This role sits within the fast-paced Connectivity Software team, part of Sky Home Communications. We lead development on the RDK WAN Manager and Broadband Application Framework-key components of the open-source RDK-B platform used in … millions of broadband devices worldwide. As a Software Architect , you'll define the software component architecture for our connectivity products, ensuring robust, scalable design. You'll represent Sky in the RDK-B community, support continuous improvement, and collaborate with stakeholders across the business. A proactive mindset and commitment to quality are essential. You'll be part of a … to stay connected and enjoy what they love-anytime, anywhere. What you'll do Attend architecture calls to define user stories and document use cases in JIRA. Define clear software interfaces to external modules and outline end-to-end deployment scenarios. Contribute to feasibility assessments and delivery planning for proposed architectures. Define and document software component architecture to More ❯

funded early-stage B2B SaaS company that’s building something genuinely transformative in their category. As they enter a critical phase of growth, they’re looking to hire a Senior or Principal Full-Stack Software Engineer to help lay the technical foundations of their platform and influence both the engineering direction and long-term product strategy. This … is a high-impact role offering direct collaboration with cross-functional teams, including senior leadership and the CEO. The successful candidate will play a key part in shaping architecture, scaling infrastructure, and delivering features that add real value to users. Key Responsibilities: Design and implement scalable, secure, and high-performance systems. Own and evolve core parts of the platform … isn’t available. The team is passionate about diversity, inclusion, and building an environment where everyone can thrive and do their best work. If you're a hands on engineer excited by the idea of helping build a product from the ground up and want to join a team that values innovation, ownership, and velocity we would love to More ❯

funded early-stage B2B SaaS company that’s building something genuinely transformative in their category. As they enter a critical phase of growth, they’re looking to hire a Senior or Principal Full-Stack Software Engineer to help lay the technical foundations of their platform and influence both the engineering direction and long-term product strategy. This … is a high-impact role offering direct collaboration with cross-functional teams, including senior leadership and the CEO. The successful candidate will play a key part in shaping architecture, scaling infrastructure, and delivering features that add real value to users. Key Responsibilities: Design and implement scalable, secure, and high-performance systems. Own and evolve core parts of the platform … isn’t available. The team is passionate about diversity, inclusion, and building an environment where everyone can thrive and do their best work. If you're a hands on engineer excited by the idea of helping build a product from the ground up and want to join a team that values innovation, ownership, and velocity we would love to More ❯

Backend & Integrations Engineer – Fully Remote – AI-Powered SaaS Client Open to applicants from UK We're looking for a hands-on Backend Engineer to help shape a growing applications engineering function. If you're confident across Python APIs, integrations, and workflow orchestration—and excited by the potential of AI-assisted development—this could be a great fit. You More ❯

Senior Data Engineer with 5+ years’ experience, and 2+ years in a Hedge Fund and/or in Systematic Trading Technology, sought by one of the original Quantitative Hedge Funds, with a 20+ year track-record. The firm are renowned for a healthy, supportive, and collegiate working environment and culture, with no siloes, boasting an industry-leading staff … tenure. You will join a 5-strong Data Engineering team in a Senior Individual Contributor capacity, working directly with Quant Researchers, Portfolio Managers and Traders, and designing and engineering the ingestion, storage, transformation and distribution of tick, timeseries, reference and alternative datasets. The technology stack spanson-premise and cloud infrastructure with technologies and tooling such as Python, dbt, KDB+ … enhance their strategies. They are a lean team owning end-to-end delivery from initial design through to operational support in production. Requirements 5+ years working as a Data Engineer with 2+ years in Financial Markets, especially in a Hedge Fund, Trading Firm, and/or working with Quant Trading Technology. Expertise in Python, including popular Python libraries for More ❯

Senior Data Engineer with 5+ years’ experience, and 2+ years in a Hedge Fund and/or in Systematic Trading Technology, sought by one of the original Quantitative Hedge Funds, with a 20+ year track-record. The firm are renowned for a healthy, supportive, and collegiate working environment and culture, with no siloes, boasting an industry-leading staff … tenure. You will join a 5-strong Data Engineering team in a Senior Individual Contributor capacity, working directly with Quant Researchers, Portfolio Managers and Traders, and designing and engineering the ingestion, storage, transformation and distribution of tick, timeseries, reference and alternative datasets. The technology stack spanson-premise and cloud infrastructure with technologies and tooling such as Python, dbt, KDB+ … enhance their strategies. They are a lean team owning end-to-end delivery from initial design through to operational support in production. Requirements 5+ years working as a Data Engineer with 2+ years in Financial Markets, especially in a Hedge Fund, Trading Firm, and/or working with Quant Trading Technology. Expertise in Python, including popular Python libraries for More ❯

Trading System Engineer – Shape the Future of Trading Leading European Private Bank Ready to make a real impact on a cutting-edge trading platform? A leading European private bank is seeking a highly skilled Trading System Engineer/Architect to spearhead the transformation of their equity trading technology. This is a unique opportunity to contribute to a multi … Execution Platform. Guarantee the system's high availability for global equity market trading. Craft bespoke trading workflows tailored to the specific needs of demanding clients across multiple trading desks. Engineer and optimize systems for dynamic scalability, ensuring responsiveness to market fluctuations and events. Collaborate closely with other IB Engineering teams and project stakeholders. What You Bring: A minimum of … five years of experience in software engineering, with a focus on modern software design, architectural patterns, and performance optimization (throughput, latency, capacity). Expert-level proficiency in Java, particularly in the development of high-performance, low-latency, and microservice-based real-time trading applications. Deep understanding of trading systems, including integration with reference and market data systems, ideally More ❯

Trading System Engineer – Shape the Future of Trading Leading European Private Bank Ready to make a real impact on a cutting-edge trading platform? A leading European private bank is seeking a highly skilled Trading System Engineer/Architect to spearhead the transformation of their equity trading technology. This is a unique opportunity to contribute to a multi … Execution Platform. Guarantee the system's high availability for global equity market trading. Craft bespoke trading workflows tailored to the specific needs of demanding clients across multiple trading desks. Engineer and optimize systems for dynamic scalability, ensuring responsiveness to market fluctuations and events. Collaborate closely with other IB Engineering teams and project stakeholders. What You Bring: A minimum of … five years of experience in software engineering, with a focus on modern software design, architectural patterns, and performance optimization (throughput, latency, capacity). Expert-level proficiency in Java, particularly in the development of high-performance, low-latency, and microservice-based real-time trading applications. Deep understanding of trading systems, including integration with reference and market data systems, ideally More ❯

Espire Infolabs is hiring for Front End Developer(React.js) for London, UK location. Role : Front End Developer(React.js) Location: London, UK(3 Days/Week onsite) Desired Industry Experience: 5+ years Relevant Experience: React.Js, Typescript, Azure Job Description: Proven experience More ❯

Plexus has partnered with a next-generation blockchain infrastructure provider that helps protect users from front-running attacks, recover excess gas costs, and unlock additional value within transaction flows. Their platform supports multiple chains, is built for resilience and scale More ❯

Plexus has partnered with a next-generation blockchain infrastructure provider that helps protect users from front-running attacks, recover excess gas costs, and unlock additional value within transaction flows. Their platform supports multiple chains, is built for resilience and scale More ❯