1 to 25 of 77 Remote/Hybrid Software Engineering Jobs in the City of London

bold technology transformation through improved working processes and modernising systems. Were looking for a hands-on (still happy to build/code) Head of Engineering to lead this change from the front who is a full-stack technologist who codes with confidence, architects with foresight, and inspires teams … deliver with purpose. Youll own the engineering direction across multiple domains designing scalable cloud-native platforms, embedding DevSecOps excellence, and ensuring our technology foundation accelerates the business. This is a role for a technical leader who still builds, who thrives on solving complex problems, automating intelligently, and mentoring ...

business users Lead the design and delivery of high-impact, user-facing web interfaces with a focus on performance and usability Establish and uphold engineering standards through testing strategy, documentation, and code review practices Act as a technical mentor and multiplier, coaching engineers, unblocking teams, and raising the overall … Growth Fintech & Tech-for-Good | Typescript, React.js, Node.js, Next.js | £110k-170k + Equity | 3 days hybrid in London Have 10+ years of experience in software engineering Strong proficiency in React, TypeScript & Node. Proven frontend & backend engineering skills Experience working with Next.js, Express & PostgreSQL Experience in high pace ...

Software Engineer – Custom Software (Android) London Office Hybrid working – approx. 20% onsite URGENT contract - Initial 4 months with high likelihood of extension We’re looking for a Software Engineer with strong Android expertise to join a high-impact custom software team delivering solutions for a major … defence client. This role offers the opportunity to work on complex, mission-critical systems using modern engineering practices in a collaborative, agile environment. You’ll be part of a well-established engineering team, contributing to the design, development, and enhancement of bespoke software applications tailored to specific ...

Java Software Engineer with around 3-6 years professional, post-graduate experience 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. This hire will be part of a core Software Engineering team, responsible for the vast majority of all applications in the business from front-to-back office.This includes Order Management & Trading Execution, Risk & Finance, Straight-Through-Processing and Corporate Functions. The team deal directly with business users ...

libraries. • Experience with agentic AI architectures and autonomous AI agents. • Hands-on experience with LangGraph or similar orchestration frameworks. • Understanding of AI lifecycle: prompt engineering, agent workflows, deployment, and monitoring. • Familiarity with LLMs and multi-agent systems. About Us: Ascendion is a leading provider of AI-first software engineering services. Our applied AI, software engineering, cloud, data, experience design, and talent transformation capabilities accelerate innovation for Global 2000 clients. Ascendion is headquartered in New Jersey. In addition to our remote/hybrid workforce, we have 30+ offices across the U.S., UK, Poland, Romania, India ...

client journeys and delivering on HL's vision to give people financial freedom. You will work with like-minded people from business, product and engineering functions to develop and refine client journeys covering onboarding, KYC, account management and investment workflows in a secure and compliant environment. By joining … Android using cross platform React Native technology stack. Solid experience & knowledge of React Native is a must-have. Define and uphold mobile engineering standards, best practices, and architectural principles. Lead technical decision-making, balancing short-term delivery needs with long-term maintainability and scalability. Ensure applications are performant, accessible ...

money or hardware at problems, our technology pinpoints the real root causes, using insight that only comes from deep experience in trading system performance engineering and first-hand knowledge from ex-technical traders. We’re now entering an exciting growth phase. Alongside our existing offering, we’re developing … safely and effectively reduce complexity or manual effort Designing and building internal tools such as: Lightweight GUIs for operational tasks Workflow automations for engineering and support teams Data enrichment or metadata tooling Prototyping quickly, validating with users, and iterating towards production-ready solutions Advising on model selection, cost ...

insurance clients, spanning agentic systems, retrieval architectures, semantic layers and decision intelligence. This is a senior, hands-on consulting role combining deep AI engineering expertise with strong client-facing presence, shaping both insurance-specific client outcomes and the firm s long-term AI engineering capability. As demand accelerates … across claims automation, underwriting decision support, policy servicing, fraud detection, compliance and operational efficiency, the consulting practice is expanding its engineering capability across agentic systems, retrieval, ontologies and AI-enabled execution within regulated insurance environments. The Consulting Engineer is a hands-on AI systems builder who combines engineering ...

Software Engineer Were now on the lookout for a Software Engineer to support our UK Production Support team that is working on delivering high-quality support and solutions to clients. In your role as Software Engineer, youll work closely with internal teams and clients to resolve issues … local statutory requirements. Provide out-of-hours support to clients when required. Skills & Experience required to perform this post: 7+ years experience in software engineering and a solid understanding of the software development lifecycle (SDLC). Technical experience with OOAD, SOA, Java, J2EE, Spring, React.js, Node ...

ways of working, standards, and governance Drive coherence across the technology stack, ensuring architectural consistency across: Secure cloud and compute platforms Digital factory and software engineering approaches Enterprise and business systems Advise on strategic technology choices, including: Platform and tooling selection Cloud strategy and deployment models Where … Experience & Skills Required Senior experience in Enterprise Architecture or technology leadership roles Defence, aerospace, or similarly regulated sectors Secure cloud and enterprise compute environments Software engineering standards and development governance Digital delivery models (agile, waterfall, hybrid) Proven background in large, complex, highly regulated organisations Comfortable operating in secure ...

Staff Software Engineer Technical leadership | Azure Architecture | .NET | Angular | Platform Scale GTreasury is scaling its core SaaS platform - and we’re looking for a Staff Software Engineer to help lead that journey. This is a senior technical leadership role where you’ll combine deep hands-on engineering … What You’ll Lead Drive technical design across front-end, backend, and data layers Partner with architects and product leaders on platform evolution Set engineering standards and raise the technical bar Mentor senior and mid-level engineers Own production reliability in a “you build it, you run it” model ...

Senior Software Engineer – Data Engineering Contract duration:- 6 months initially (with extension available for the right person) Location:- London Hybrid working:3 days per week in office + 2 days WFH Rate: £600-inside IR35 Join our Data Engineering team at the heart of a quantitative investment … working with large scale messaging and downsampling solutions Strong academic record and a degree with high mathematical and computing content e.g. Computer Science, Mathematics, Engineering or Physics 5-7 years of professional experience in software engineering with Java as your primary language Proficient on Linux platforms ...

Java Software Engineer/Developer (Java AWS Spring Boot) London/WFH to £90k Are you a backend focussed Java technologist who enjoys building systems from scratch? You could be progressing your career at a global, prime broker that is replacing the legacy infrastructure used across capital markets with … today's complex global markets. The company is experiencing great success in the US and is expanding into the UK. As a Java Software Engineer you will join a small team responsible for building a brand new Futures Trading platform for the UK, primarily using Java with a focus ...

Software Engineer/Full Stack Developer (TypeScript Data ETL) London/WFH to £90k Are you a data savvy Software Engineer with full stack skills? You could be progressing your career in a senior, hands-on Software Engineer role at a scaling Fintech who have built … Salary to £90k Remote working Impactful role with complex challenges Great career growth opportunities as the company scales Your role: As a Software Engineer you'll help to build a seamless digital experience that makes complex energy systems simple, powerful and intuitive, creating systems that bring trading and billing ...

collective success. Function as a key member of a self-organizing Agile team, engaging fully in Agile ceremonies. Maintain high coding standards and champion engineering best practices across the team. Promote transparency and knowledge sharing throughout the organization. Qualifications and skills required for the role: Essential Technical Expertise: Strong … Advocate for TDD, BDD, and test automation. Experience & Methodology: Proven experience working in Agile environments (Scrum/Kanban). Education: Degree in Computer Science, Software Engineering, or equivalent field. Personal Attributes: Strong interpersonal and communication skills (written and verbal). Analytical mindset with excellent problem-solving abilities. Proactive ...

Java Developer/Software Engineer (AWS React Full Stack) London/WFH to £80k Are you a technologist Java Developer looking for an opportunity to be part of something big from the start? You could be progressing your career in an impactful role at a newly established Fintech start … also have a good appreciation of user interface/front end development using React or Tailwind CSS You have a strong knowledge of modern software engineering best practices including cloud native applications, microservices and CI/CD You are an advocate of AI and keen to explore ...

Senior Java Developer/Software Engineer (Java AWS Kafka) London/WFH to £140k Are you a Java technologist who enjoys building systems from scratch? You could be progressing your career, in a senior, impactful role at a global, cloud-native, prime broker that is replacing the legacy infrastructure … mission critical systems in collaboration with Product Managers to understand and define new features and coordinating with other developers with the goal of writing software as one. You'll be empowered to implement the latest tech, seeking continual improvement and can build a team around you, progressing ...

client) Duration -12 months (likely extension) Day Rate - Competitive Role Overview We are looking for an experienced .NET Developer to join a delivery-focused engineering team working on business-critical systems in a fast-paced London-based environment. The role will involve building, enhancing and supporting modern .NET applications … deliver high-quality features Write clean, testable and maintainable code following best practices Participate in code reviews and contribute to improving engineering standards Support production systems, including bug fixing and performance tuning Work within Agile/Scrum delivery teams Required Skills & Experience Strong commercial experience with C# and .NET ...

other opportunities with top tech companies, where you can truly find work that matters! We are partnering with a rapidly growing, VC-backed AI Software Factory that is modernizing the world’s most critical physical industries. While much of the tech world focuses on social apps, this company … tasks, allowing you to focus on high-level architecture and complex integration challenges. It’s a chance to be at the forefront of how software engineering is evolving. What You’ll Do You will lead the implementation and delivery of backend services, integrations, and workflow logic that power ...

Fintech & Tech-for-Good | Typescript, React.js, Node.js, Next.js | Up to £110k | 3 days hybrid in London Strong proficiency in React, TypeScript & Node. Proven frontend engineering skills Experience working with Next.js, Express & PostgreSQL Experience in high pace early-stage businesses, with the ability to work end-to-end across … entire product development process, taking high ownership & accountability. A problem solving, product engineering mindset. Strong understanding of frontend & backend software engineering best practices Strong written & verbal communication skills. Nice to have: Experience in regulated environments (ideally fintech) Experience working with AI tooling Details for the Snr Full ...

Job Title: Java Developer (Electronic Trading Platform - FIC) Contract Type: Outside IR35 Location: London Day Rate: Up to £950 per day Flexible Hybrid working: 1-2 days a week in London City offices Client: Prestigious ...

client is leading the way in next-generation communications, building laser communication systems and software-defined networking platforms for aerospace and deep-space applications. With technology acquired from Google, theyre creating solutions that let satellites, aircraft, and even cislunar networks communicate seamlessly essentially bringing space and Earth … closer together. The Role Theyre looking for a Software Engineer (Delay-Tolerant Networking) to join their UK R&D team. Youll help evolve their delay-tolerant networking products, including the Hardy Bundle Router and Spacetime Platform, and develop new features that will transform how communication networks operate worldwide. This ...

fast-growing AI and technology consultancy on a mission to solve complex data challenges for governments and enterprises. Our work combines deep engineering expertise with bold thinking to deliver solutions that transform decision-making and operations across industries like defence, healthcare, and commercial sectors. Joining us means becoming part … team where AI meets engineering excellence. You’ll work on projects that genuinely change lives and industries, in a culture that values curiosity, collaboration, and innovation. The Role We’re seeking Full Stack Data Engineers across all levels—from Junior to Senior Manager—who want to apply their technical ...

fast-growing AI and data consultancy in London. Working across junior to senior levels, this is a hands-on role where you'll combine software engineering, data expertise, and AI to solve complex problems for clients across government, defence, healthcare, and commercial sectors. What You'll Do: Design … tools that transform enterprise operations. Apply AI: Collaborate on AI and machine learning models applied to real-world challenges. Technical Excellence: Deliver scalable, reliable software solutions using Python, SQL, and TypeScript. Grow & Share: Mentor peers, support junior engineers, and contribute to best practices. Partner with Clients: Build strong, trusted ...

Test Manager to lead and elevate quality across multiple delivery teams working on complex, global platforms. This role spans front-end and back-end engineering , with responsibility for driving QA governance, standards and consistency across UK-based and offshore teams. You'll operate across 3-4 delivery teams , influencing … best practices Leading and influencing multiple QA teams across geographies Driving test automation, integration, E2E and performance testing Improving efficiency and scalability through strong engineering-led QA Supporting and reviewing code where required Owning and improving CI/CD-integrated QA pipelines (e.g. GitLab) Working closely with front ...