13 of 13 Part-Time Lead Software Engineer Jobs in the City of London

Lead Software Engineer – Cloud & Data Orchestration Hybrid (1–2 days/week in office) | £140k+ Package | ️‍♂️ Security-Cleared or Security Clearable required Location: London | Sector: Intelligence, Analytics & Secure Data | Process: 3 stages Our client is a mission-driven consultancy delivering high-impact intelligence, research, and technical services … private sector clients globally and the brand are well known for making real-world difference. As we continue to expand, we’re hiring a Lead Software Engineer/Founding Engineer to take the reins of a specialist engineering unit delivering microservice-based cloud and data solutions … and Kubernetes in a cloud-agnostic environment Guiding architecture and implementation of large-scale data pipelines for structured and unstructured data Steering direction on software stack, best practices, and legacy tech modernisation Collaborating with a multidisciplinary group including intelligence analysts, researchers, and domain specialists Supporting clients working in highly More ❯

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that … support real-world infrastructure at scale? We’re recruiting for a Lead Software Engineer on behalf of a fast-growing technology company whose platform is relied upon across thousands of physical locations in the UK and internationally. Known for their innovative approach and people-first culture, our … leadership with technical direction, ideal for someone who enjoys working across the full product lifecycle while helping others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with More ❯

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested … in shaping tools that support real-world infrastructure at scale? We’re recruiting for a Lead Software Engineer on behalf of a fast-growing technology company whose platform is relied upon across thousands of physical locations in the UK and internationally. Known for their innovative approach and … leadership with technical direction, ideal for someone who enjoys working across the full product lifecycle while helping others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with More ❯

Lead Software Engineer Tech Stack: C#, .NET, SQL, Azure, Docker, Bloomberg, Fidessa London - Onsite Salary Range: £80,000 - £135,000 Harrington Starr has partnered with a boutique Investment Bank, with decades of experience and exceptional performance. They are currently seeking to hire a Senior/Lead Engineer possessing strong experience developing front office applications and systems, integrating with 3rd party vendors and APIs. This is an opportunity to be responsible for the development of an exciting new greenfield application right at the heart of the front office, with daily interaction with Traders and a More ❯

Lead Software Engineer – Options C++ One of the top, industry leading prop firms is looking for a C++ Software Engineer to join their options technology team, in their Core and Strategies. They are one of the most widely known global players for tech and trade … providing insight on programming solutions using C++. Work in a high-pressure environment and provide quick solutions. Requirements & Qualifications: Strong experience as a senior engineer in the industry with a focus on C++. Proven track record of working as a leader of a team and having an impact in More ❯

Lead Python Software Engineer – London *Please note this role cannot sponsor. Please do not apply if you are seeking sponsorship* A Lead Python Engineer is required for an exciting and innovative Software sports betting company based in London. The successful candidate will be working … developer with 10+ years of experience, specializing in Python backend development. The team will grow in 2025. Essential Skills 5+ years’ experience in a Software Development role, with some Python experience and a track record of building robust, high-quality solutions. 1+ year in a leadership position, with a … sustaining technical solutions that pragmatically address complex, real-world business challenges. Be hands-on: take on tasks, actively solve problems and contribute to delivery. Lead architecture decisions that align with company’s standards and ensure these are well understood across the team. Collaborate with cross-functional teams, including developers More ❯

Lead Java Software Engineer with around 7-10 years of experience, including relevant Financial Markets knowledge, sought to Co-Lead a team of 12 for a Multi-Award-Winning $5BN+ AUM Systematic Hedge Fund. My client is one of the original Systematic Investment firms and is … proud of its genuinely collegiate, friendly and supportive culture, with an enviably low staff attrition. This team covers all software front-to-back, outside of Portfolio Management and Research systems, including Execution and Order Management systems, as well as Risk, Fund Accounting, Operations and Corporate Functions. Software is … management and coaching, as well as engaging with the external Tech community through conferences and meetups. Requirements 7-10 years of experience as a software engineer in a professional environment, managing projects to take requirements from concept to production use. Financial experience and domain knowledge – especially Buy Side More ❯

Lead Engineer – NodeJS Developer Salary: Up to £100000 + Benefits + Bonus NodeJS, JavaScript, TypeScript, React Framework, AWS, Kubernetes, Docker, Digital Investments. SQL, Harrington Starr has partnered with an innovative Digital Currency Investment Platform Company that specialise in developing unique software systems for clients for invest into … cutting edge web-systems, which are being used globally and are offering the opportunity for you to play a pivotal role within the full software development life cycle. We are looking for an experienced Full Stack Engineer with NodeJS, JavaScript, TypeScript and NodeJS and including cloud technologies. You … leader within their community and a specialist Development team already in place, due to recent success they are looking to further build out their Software Engineering team in their London Office. You will be working on cutting edge platforms for Trading and analytics for Digital Investments. If you feel More ❯

Front End Software Engineer/React UI JavaScript, React, typescript, Redux, NodeJS, GraphQL, ApolloQL, Webpack, Cypress, HTML, CSS, REST, Data Visualisation, API - Perm Role – London – Hybrid £80'000- £100'000 plus bonus Harrington Starr has partnered up with a Global Exchange company that are looking to hire a … UI Developer with expert Software Engineering skills using JavaScript, React/Redux to help work on a range major UI project across the Fund. This is a very good opportunity to a Senior Developer to come work on a Greenfield Project working on Exchange and connectivity services. . As More ❯

Lead iOS SDET Up to £125k + bonus + benefits Hybrid (2 days x week in London Office) We are excited to be partnering once again with a global leader in message archiving services as they search for Lead iOS SDETs to join their team of 400 developers … in some of the most regulated industries globally. Their tech stack includes iOS with Swift, SwiftUI, UIKit, Foundation, GCD, and RESTful APIs. As a Lead iOS SDET, you will: Lead a small team of SDETs Define, automate, and execute test cases to verify product requirements, maintain test infrastructure … test reviews, and enhance test coverage and automation quality. Engage in team planning, story grooming, issue resolution, and support the release process. A good Lead iOS SDET will have: A degree in Computer Science or a related field. Experience in technical and line management 8+ years of experience developing More ❯

Backend Engineering Lead ( Rust & Pyhton, C++) Opportunity Overview: A leading technology-enabled advisory firm specialising in financial market risk management is seeking a skilled Back-End Engineering Team Lead. This is a fantastic opportunity to play a key role in steering the back-end technology initiatives at an innovative … and rapidly growing company. Job Role: The successful candidate will lead the back-end engineering team responsible for developing and maintaining a sophisticated technology platform that supports alternative asset managers in fields such as private equity, private debt, and real estate. Requirements: Bachelor’s degree or higher in Computer … C++ . Key Responsibilities: Back-End Tech Strategy and Leadership: Strategically develop and execute back-end technology initiatives in line with broader business goals. Lead and mentor a team of engineers, fostering a culture of innovation and adherence to best practices in Rust & Python. AWS Cloud Solution and Backend More ❯

level objectives are met. Maintain a strong focus on quality, reusability, clean architectures, security, and resilience across the full application lifecycle. Collaborate with the Lead Developer, Delivery Manager, and Product Owner to design service improvements and new feature additions. Key Essentials: 3+ years of experience in a senior software More ❯

Principal Front Office Developer - Trade Capture, Pricing, Risk, and STP You will be: Accountable for the successful software delivery from inception to deployment for the complete Front Office Derivatives Technology Stack Deliver key strategic business goals by identifying systems changes that support revenue generation and regulatory reporting for the … of high priority, high value changes in close cooperation with Product Managers ensuring fast, stable, resilient and supportable systems within the approved budgetary framework. Lead the team of 15+ Front Office developers to deliver on their individual responsibilities and ensure that the Front Office desks are fully supported with … a global system architecture. Responsibilities: Design, develop, and maintain high-quality Java-based software components for trade capture, pricing, risk calculation, payments, settlements, and regulatory reporting Develop scalable and accurate solutions to meet the evolving needs of our business Be a part of the global Level 3 support team More ❯