26 to 36 of 36 Technical Debt Jobs in the City of London

requirement in everything Role day-to-day: The company have got an ambitious roadmap that includes effectively a multi-stage full rebuild of the react native app to shed technical debt and allow them to greatly improve functionality for users. You’ll be working with stakeholders, designers & backend developers to plan & be part of delivering multi-discipline projects. … for our users. You’ll be expected to regularly liaise with the other engineers in the business of different disciplines to help decide the best approach to multi-discipline technical projects. There will of course be smaller pieces of work such as tweaks and bug fixes that go along with the maintenance & upkeep of an app used by many. More ❯

requirement in everything Role day-to-day: The company have got an ambitious roadmap that includes effectively a multi-stage full rebuild of the react native app to shed technical debt and allow them to greatly improve functionality for users. You’ll be working with stakeholders, designers & backend developers to plan & be part of delivering multi-discipline projects. … for our users. You’ll be expected to regularly liaise with the other engineers in the business of different disciplines to help decide the best approach to multi-discipline technical projects. There will of course be smaller pieces of work such as tweaks and bug fixes that go along with the maintenance & upkeep of an app used by many. More ❯

are at the top of their fields, pushing the boundaries of technology and finance every day. Innovation & Impact: Work in a modern, young codebase with minimal legacy code and technical debt. You’ll have the freedom to choose the best technology for the job, allowing you to innovate and deliver at an unmatched scale. They also have a pretty More ❯

are at the top of their fields, pushing the boundaries of technology and finance every day. Innovation & Impact: Work in a modern, young codebase with minimal legacy code and technical debt. You’ll have the freedom to choose the best technology for the job, allowing you to innovate and deliver at an unmatched scale. They also have a pretty More ❯

week on-site, remainder remote) Contract: 6 months, Outside IR35 Start: ASAP Overview A leading digital technology consultancy is seeking a Principal AI/ML Consultant to lead strategic technical transformation within a financial services environment. This is a hands-on, client-facing role focused on modernising legacy systems, driving AI adoption, and delivering measurable business value. Key Responsibilities … Lead the systematic modernisation of legacy services, prioritising based on business impact. Eliminate technical debt by extracting APIs, decommissioning obsolete services, and consolidating functionality. Collaborate with engineering teams to identify and deliver high-impact modernisation opportunities. Support platform services strategy by transforming legacy services into reusable, shared components. Drive adoption of AI tooling (e.g., Claude Code, GitHub Copilot … and documentation. Demonstrate and quantify business value from AI adoption. Ensure modernised services are handed off with clear ownership and integrated into new workflows. Skills & Experience Proven experience leading technical teams and modernising complex legacy systems at scale. Strong architectural skills and ability to design logical abstractions for legacy code. Experience managing mixed teams of employees and contractors. Hands More ❯

week on-site, remainder remote) Contract: 6 months, Outside IR35 Start: ASAP Overview A leading digital technology consultancy is seeking a Principal AI/ML Consultant to lead strategic technical transformation within a financial services environment. This is a hands-on, client-facing role focused on modernising legacy systems, driving AI adoption, and delivering measurable business value. Key Responsibilities … Lead the systematic modernisation of legacy services, prioritising based on business impact. Eliminate technical debt by extracting APIs, decommissioning obsolete services, and consolidating functionality. Collaborate with engineering teams to identify and deliver high-impact modernisation opportunities. Support platform services strategy by transforming legacy services into reusable, shared components. Drive adoption of AI tooling (e.g., Claude Code, GitHub Copilot … and documentation. Demonstrate and quantify business value from AI adoption. Ensure modernised services are handed off with clear ownership and integrated into new workflows. Skills & Experience Proven experience leading technical teams and modernising complex legacy systems at scale. Strong architectural skills and ability to design logical abstractions for legacy code. Experience managing mixed teams of employees and contractors. Hands More ❯

with a strong focus on high-quality code. Conduct peer code reviews to ensure quality and adherence to best practices. Participate in daily stand-ups, change analysis sessions, and technical presentations. Provide guidance on tool and environment adoption where necessary. Continuously develop knowledge of the business domain and gain a deeper understanding of the organization's objectives. Work closely … with tech leads, engineers, testers, and other personnel to deliver high-quality products. Take ownership of initiatives related to innovation or addressing technical debt. Design, document, and communicate system solutions with a balanced focus on time, quality, cost, and performance. Collaborate with colleagues across the organization to gain buy-in and feedback on proposals and designs. Required Knowledge & Experience More ❯

programming with ReactJS Strong awareness of secure coding standards (e.g., OWASP, CWE). Docker & Kubernetes SQL (preferably Postgres or Oracle) Skilled in identifying and refactoring anti-patterns and managing technical debt. Proficient in CI/CD practices and tooling (e.g., Jenkins). Strong background in test strategy and execution—from unit and integration tests to performance and regulatory testing. … Responsibilities Design and build scalable applications and services, following best practices for code quality, reviews, and security. Contribute to technical design and architecture for service-level solutions that align with evolving business needs. Partner with product and delivery teams to prioritise work and balance trade-offs. Continuously identify opportunities to improve and modernise core services – automation is key to More ❯

programming with ReactJS Strong awareness of secure coding standards (e.g., OWASP, CWE). Docker & Kubernetes SQL (preferably Postgres or Oracle) Skilled in identifying and refactoring anti-patterns and managing technical debt. Proficient in CI/CD practices and tooling (e.g., Jenkins). Strong background in test strategy and execution—from unit and integration tests to performance and regulatory testing. … Responsibilities Design and build scalable applications and services, following best practices for code quality, reviews, and security. Contribute to technical design and architecture for service-level solutions that align with evolving business needs. Partner with product and delivery teams to prioritise work and balance trade-offs. Continuously identify opportunities to improve and modernise core services – automation is key to More ❯

compliance with GDPR and company standards Integration & Data Connectivity Architect integrations with CRM tools (Braze, Heap.io, LaunchDarkly) and broader ecosystem Support convergence initiatives with platforms like Smarter and Explorer Technical Leadership Championing technology standards and patterns across engineering teams Contributing to enterprise roadmaps and technology strategy Guide engineering teams on architectural best practices Participate in code reviews and mentor … Deep understanding of OpenID Connect , OAuth2 , and SAML protocols Experience with CRM, Marketing, feature flagging, and analytics tools (Braze, Heap.io, Mixpanel) Proven ability to lead architectural migrations and manage technical debt. Excellent communication and stakeholder engagement skills The interview process: Online interview with the Senior Talent Partner Online interview with the CTO Online interview with the VP of Engineering More ❯

refill, extrapolation, benchmarking, and recosting. Reviewing and QA’ing code, running performance testing, and owning debugging cycles. Collaborating closely with product and engineering leads to prioritise features and manage technical debt. Engaging with stakeholders to troubleshoot and propose optimisation improvements. What We’re Looking For Strong Python skills and experience working with optimisation tools such as Pyomo , Gurobi , or … understanding of mathematical modelling and problem-solving in real-world applications. Comfort working with APIs, backend data models, and performance monitoring tools. A proactive mindset — someone who enjoys owning technical challenges from concept to delivery. What’s on Offer Fully remote working (UK-based) with just 2 days per month in the London office. Base salary up to … engine that impacts real business outcomes. Supportive, collaborative team culture that values innovation and continuous learning. 📩 Apply now if you’re ready to make the leap from contributor to technical lead — with full ownership, autonomy, and measurable impact. More ❯