126 to 150 of 283 Software Engineering Jobs in the City of London

portfolio management and investment decision-making. The successful candidate will play a key role in modernising and scaling existing trading and investment tools, improving engineering quality, reducing technical debt and delivering new capabilities across a sophisticated front-office environment. Key Responsibilities Design, develop and support production-grade Python applications … business-critical enhancements Strengthen monitoring, observability, testing and production support capabilities Contribute to architecture decisions and application modernisation initiatives Required Skills Strong commercial Python engineering experience Experience building and supporting production applications PostgreSQL and Snowflake expertise AWS cloud experience (ECS, EKS, Lambda, S3, RDS or similar) CI/ ...

build the backend, own the frontend and confidently explain every architectural decision in between? We're looking for a genuinely strong Senior Software Engineer who loves building complete solutions, not just working on isolated tickets. This is a hands-on, evenly balanced full-stack engineering role combining production … concurrency becomes an issue and when architectural decisions have long-term consequences. What will you be building? Designing, developing and owning end-to-end software solutions using Python and TypeScript. Building robust backend services and APIs using Python, ideally FastAPI. Creating responsive, maintainable frontend applications using React and TypeScript. ...

growing client pipeline. This hire will play a key part in taking that capability forward. The Role This is a hands-on AI Engineering role at Senior Consultant level. You'll work alongside our CTO and engineering leadership, you'll work in a small pod - typically with … architectures, LLM integrations and protocol-driven tooling (MCP, tool orchestration) Iterating in short loops: demoing every few days, taking feedback, changing course without ceremony Engineering for production from day one: guardrails, security and integration into the client's estate, scalability and telemetry - designed inside the build, not bolted ...

experience shipping real AI products to customers? Do you want to build innovative solutions for financial professionals with teams of brilliant, collaborative data scientists, software engineers, UX researchers and product managers? If so, we’d love to talk to you! The London Stock Exchange Group (LSEG) is a global … standardized training Provide technical mentorship and support while letting your team make key decisions and learn from their mistakes Work with Product Managers and Software Engineering leaders to define and iteratively deliver roadmaps Build a collaborative team environment Qualifications Master's degree in Computer Science, Statistics, Mathematics ...

frameworks Govern and support technical delivery of those solutions Line manage, mentor, train and develop others Qualifications: You will have a strong architecture and software engineering background, have led teams of engineers or other architects and be able to contribute to our internal data strategy and thought leadership … with unmatched industry experience, functional expertise and global delivery capability. Our broad range of services, solutions and assets across Strategy & Consulting, Technology, Operations, Engineering and Creative, together with our culture of shared success and commitment to creating 360° value, enable us to help our clients reinvent and build trusted ...

Software Engineer - API Development with Python London Certain Advantage are recruiting on behalf of our global client for a Software Engineer to work on a deal entry portal that feeds Enterprise Risk Management Systems (ETRMs). As a Software Engineer contractor you'll be expected to work … with any kind of message broker system (e.g. RabbitMQ, ActiveMQ, AWS SQS etc) Excellent analytical, problem-solving, coding, testing, and automation skill Object-orientated software professional that ideally has experience using at least one strongly-typed language Collaborate with the lead functional developer to define, develop, test, and release ...

chase ways to reduce/design out manual support overhead Required skillset You should get in touch if: Bachelor’s degree in Computer Science, Software Engineering or other technical discipline (or equivalent experience) 2-4 years of solid working experience in an infrastructure, DevOps, or Platform engineer role ...

General Reinsurance, London Branch, invites applications for a Senior Software Engineer skilled in .NET (Blazor, C#) and C++. You will lead development of internal and external web apps, collaborate with global teams, and drive Azure cloud initiatives to improve performance and reliability. The role requires a strong background ...

Senior Software Engineer: Sports Betting Up to £120,000 + Bonus + Excellent Benefits London - 5 Days On-Site | Python | Java | AI | Low Latency | Distributed Systems Build software where performance, mathematics and real-time decision-making genuinely matter. We're partnering with a highly technical sports betting business … continuing to invest in its engineering function. They're looking for Senior Software Engineers to work on complex backend systems operating across real-time data, quantitative problems and high-performance distributed architecture. This is an opportunity for engineers who enjoy difficult technical problems rather than simply delivering features ...

role where you'll play a key part in building accurate, reliable transport datasets and developing the data pipelines and spatial models that underpin software solutions. Working closely with the development team, you'll help transform complex and fragmented data into high-quality, structured information to support location recognition … geofencing and the automation of transport-related processes. You'll have the opportunity to work with modern data engineering technologies, including AI-assisted data processing, while tackling interesting technical challenges involving mapping accuracy and real-world location data. The Role Build and maintain data pipelines to ingest, clean, standardise ...

rather than purely academic, research or proof-of-concept experience. Strong Microsoft AI technology experience, particularly Copilot Studio, Azure AI Foundry and Azure DevOps. Software development capability, ideally with Python; JavaScript or other development languages would be an advantage. A solid technical understanding of LLMs, NLP, machine learning fundamentals … client would be interested in strong AI engineers from other complex professional environments where security, confidentiality and reliability are important. Hands-on AI engineering experience where you have built and deployed production AI solutions, ideally within the Microsoft ecosystem. This is NOT purely a strategic AI/innovation person ...

bank: Sales and Trading Salary £(phone number removed) plus benefits and bonus Location: London City and home working hybrid 50/50% Requirements: Strong software engineering JAVA background, leading enterprise-scale test automation, BDD & Cucumber The Head of Test Automation will provide strategic, technical and organisational leadership … bank's test automation and quality engineering capability across Sales and Trading technology business platforms. The role will define and execute the test automation strategy, establish engineering standards and frameworks, and lead teams responsible for delivering scalable automated testing across trading, risk, pricing, P&L, market data, eTrading ...

global financial services and investment company. We're seeking a future team member for the role of Director, AI/Machine Learning Software Engineer to join our team. This role is located in Manchester or London. Role Summary: The AI/ML Software Engineering within the Enterprise ...

Network & Connectivity Solution Architect reporting to the VP of Software Engineering, you'll play a critical role in designing and governing the end-to-end network and connectivity architectures that power the Calypso CapCloud platform - a cloud-native capital markets solution serving clients across global financial markets. … connectivity deployment patterns and integrating networking into CI/CD pipelines. Required Qualifications Several years of experience in network architecture, cloud networking, or connectivity engineering, with hands-on expertise across AWS (preferred) and/or OCI environments. Proven ability to design end-to-end network solutions including VPC/ ...

performance and maintainability. Experience with modern RPG development techniques, including modules, service programs and activation groups, as well as application design and established software engineering principles, will be important. You will bring a solid understanding of IBMi security and authorities, subsystems, system APIs, SQL services, journaling and recovery ...

agents and scalable ML-powered services. You will design, implement, and monitor agentic systems that automate complex underwriting decisions, collaborating with data scientists and software engineers in a fast-paced Data & AI unit. The role emphasizes robust architecture, testability, and maintainability, with hands-on Python, LangChain, Docker, and Azure. ...

architectures, LLM integrations and protocol-driven tooling (MCP, tool orchestration) Iterating in short loops: demoing every few days, taking feedback, changing course without ceremony Engineering for production from day one: guardrails, security and integration into the client's estate, scalability and telemetry - designed inside the build, not bolted … client engineers during Transform engagements Evaluating emerging AI tools, frameworks and protocols, and making pragmatic adoption calls What We're Looking For Essential: Strong software engineering foundations (clean code, testing, CI/CD, production mindset) Hands-on experience with LLMs - this can come from personal projects, not just ...

generosity.Join us for the opportunity to grow and make a difference in ways that matter to you.We are looking for a senior backend software engineer to join our core service API team within Investments Technology. Our team designs, builds and operates the core services and APIs that are used … monitoring and alerting.Providing support for production services and their consuming teams, including onboarding and API documentation.Technical Excellence:Performing as a domain expert across the software lifecycle (design, coding, testing, deployment, operations), leading significant pieces of development.Leading code reviews and actively participating in providing feedback on others' designs and code.Being ...

scale it takes to feed the nation. The level of data, transactions and variety involved. Then you’ll realise this is a modern software engineering environment, because it has to be. We’ve made significant investment in the standards and principles that shape how we work. We iterate … clear updates, decisions required and feasibility and affordability trade-offs. Support transformation change teams for launch readiness, launch & adoption with user groups, working with engineering on DevOps processes and live incidents. Track industry developments, identify innovation opportunities, and support Product Managers and Associate Product Managers. How I will succeed ...

Our client is a leading global investment bank. JOB DESCRIPTION Behind every investment is a person with ambitions, motivations and values. While we know that every client is unique, they come to our Personal Investing ...

Our client is a global credit ratings and risk analytics firm. We unite the brightest minds to turn today's risks into tomorrow's opportunities. We do this by striving to create an inclusive environment ...

Senior Software Engineer - Java Order Management System (OMS) - Trading Platform So, who are we? IG Group is a FTSE 100 fintech operating across five continents, serving over 1.4m customers and handling billions of dollars in transactions - built on scale, trust, and proof. We didn't pivot to innovation … testing, tooling and observability. Translate between trading language and system behaviour - in both directions - when working with traders, dealers, quants and business stakeholders. Building software with AI: Use AI coding assistants as part of your everyday toolkit - scaffolding, refactoring, test generation, and finding your way around unfamiliar code. Apply ...

Data Scientists and wider technology teams to productionise models. Develop high quality Python code and support CI/CD processes. Create and optimise feature engineering and data preparation workflows. Monitor model performance and ensure ongoing reliability. Produce clear technical documentation and knowledge sharing materials. Engage with technical … machine learning solutions into production environments. Understanding of data processing, transformation and pipeline development. Experience building and maintaining end to end ML workflows. Solid software engineering and coding best practices. Exposure to modern AI and deep learning approaches including NLP and large language model related technologies. Reasonable Adjustments ...

generative AI, and retrieval based systems, with the ability to step into technical detail when required. Expertise with LLMs, including fine tuning, prompt engineering, grounding strategies, and responsible AI practices. Demonstrated experience defining technical standards, evaluation frameworks, or governance processes across teams, not just within a single project. Working …/ML frameworks. Experience with RAG, semantic, vector, or hybrid search, and experimentation approaches that measure user impact. Familiarity with cloud platforms and modern software engineering practices. Excellent communication and stakeholder management skills, with proven ability to represent technical work to senior and non technical audiences. Strong mentoring ...

engagements. Provide assistance on new strategies or migration projects the clients wish to implement by using BQuant Work closely with our Product Development and Software Engineering teams to help drive improvements to our BQuant Platform Training and team support will allow you to gain: In depth knowledge ...