1 to 25 of 196 Permanent Software Engineering Jobs in the City of London

C++ Software Engineering Manager A brand new and exciting opportunity has arisen for a C++ Software Engineering Manager with extensive knowledge of C++ to join a market leading financial services company based from their Old Street, London office. Please note you will be expected … office 4 days per week. The C++ Software Engineering Manager will take lead and mentor a team of 5 developers and QA's while also being able to be hands-on when called upon. This is an excellent opportunity for a C++ Software Engineering Manager ...

Head of Software Engineering - - £130,000 - £150,000 (potential stock options) Location: London – 3 days on site Sector: Fintech/Payments/Financial Services The Opportunity We are seeking a Head of Software Engineering to lead, scale and mature an engineering function while remaining technically … technical decision-making. You will play a critical role in building and evolving systems within a regulated payments/financial services environment , balancing engineering excellence and platform resilience. Key Responsibilities Engineering Leadership & Strategy Own the software engineering strategy , aligned with business, product and regulatory objectives. Lead ...

Find us at : https://stage.tech/Contact us at : intern@stage.tech Applications reviewed on a rolling basis Summary Stage is hiring a Software Engineering Intern to help develop our platform (Salt) that processes music metadata and royalty information at scale. The software you build will … Salt platform and supporting systems, working with modern technologies such as React, TypeScript, AWS, and AI-powered tools. This is a hands-on engineering role with real product impact. You will ship features, learn fast, and collaborate with a product design-led team focused on excellent user experience. What ...

pace across multiple international markets. With a mission centred on improving people’s lives through wellness, the company blends technology, data, and modern engineering practices to enhance member experience, drive commercial growth, and unlock operational efficiency. The organisation has recently invested heavily in a cutting‐edge AI function, with … Engineer to join a growing AI team delivering production‐grade AI systems across the business. This role sits at the intersection of software engineering, machine learning, and applied data science — ideal for someone who enjoys building real products, not just prototypes. You’ll work end‐to‐end: from ...

Join this rapidly scaling AI-native Fintech start-up that’s already raised a significant Series A and is now building its core AI engineering team . This is a career-defining role , and given the NOISE in the AI job market right now, this is the AI start … endlessly tuning prompts or churning out throwaway PoCs. This is about owning systems , not slides. They’re looking for strong software engineers who’ve already put AI systems into production, are comfortable across backend, data, and infrastructure, and don’t flinch when priorities shift. Ambiguity is part ...

personalised experiences that are both simple and beautiful. About the Job – Machine Learning Engineer We are looking for a Machine Learning Engineer with strong software engineering fundamentals to join our team of domain experts and researchers. You will be responsible for building robust, scalable ML systems that bring … translate experimental models into reliable, maintainable software. Optimise ML systems for performance, scalability, and cost-efficiency in cloud environments (distributed clusters, GPUs). Establish engineering best practices for ML development, including testing, CI/CD, and code review standards. Progression Timeline Month 1: Onboard to existing ML codebase ...

Senior Software Engineer 📍 Location: Onsite, London, United Kingdom ⌛ Type: Full-time 💰 Compensation: Negotiable (Competitive salary + equity) About Ontik Ontik is an ambitious, early-stage B2B financial operations platform designed to streamline and simplify complex financial workflows for heavy duty industries. We’re scaling rapidly and looking … high-performance, ownership-driven environment, where you can make a direct impact on the product and help shape its future. Role overview As a Software Engineer (Full-Stack) at Ontik, you’ll play a pivotal role in building and scaling our financial operations platform. This is a hands ...

Title: Software Engineer - Cluade SME - (AI Tech) Client: AI HealthTech Scale-Up – Backed by Top-Tier Investors, Led by World-Class Engineers Salary: Up to £100k + Bonus + Equity Location: Remote (UK-based) with an optional Holborn office Sells: Work on cutting-edge AI systems that power healthcare … Python/FastAPI/Cloud), and a culture that rewards curiosity, autonomy, and clean engineering. An AI Tech company is expanding its high-calibre engineering team and looking for Software Engineers who thrive on building elegant, scalable systems from the ground up. You’ll be joining a small ...

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 ...

C++ Software Engineering Manager A brand new and exciting opportunity has arisen for a C++ Software Engineering Manager with extensive knowledge of C++ to join a market leading financial services company based from their Old Street, London office. Please note you will be expected ...

SaaS scale‐up serving top‐tier investment firms with a market‐leading, data analytics platform for global credit investors (think Reuters and Bloomberg) The engineering org is London‐based (circa 13–14 people across DevOps, Frontend, AI/ML, Backend, and QA). Everything is the latest and greatest … architectural decisions, own services to production, and contribute to how massive datasets are modelled, partitioned, and served to customers. Non‐Negotiables: 8–10 years’ software engineering experience across multiple environments Node.js backend development SQL mastery with experience of working with large‐scale, data‐heavy systems (our client ...

Application Software Engineer – JavaScript A fantastic opportunity for talented Software Developers, to join an industry-leading software company in Cambridge offering the opportunity to work on a wide variety of web application infrastructure projects using a diverse toolset, with an emphasis on JavaScript, Node.js and related frameworks. … based from the London or Cambridge office (3 days on site, 2 days remote) Salary – Negotiable + comprehensive benefits Requirements for Application Software Engineer – History of academic excellence including a 2:1 or 1st class honours degree from a leading university plus AAB at A Level (or equivalent UCAS ...

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 ...

driven solutions that transform how organisations make decisions. In October 2025, Accenture acquired Decho Group, recognising our unique ability to combine deep engineering expertise with strategic advisory, tackling mission-critical problems in defence, healthcare, and commercial industries. Joining Decho means joining a consultancy where AI meets engineering excellence. … build workflows that drive smarter decisions, and partner with clients to deliver sustainable transformation. This is a hands-on role where you’ll combine software engineering expertise with strategic problem-solving, working across data pipelines, operational workflows, and AI models. Key Responsibilities Design & Solve: Break down client problem ...

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 ...

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 ...

Partner with data engineers, ML engineers, architects, and business teams to shape ML initiatives. Present insights clearly through strong data visualisation and storytelling. Uphold software engineering and MLOps best practices (testing, versioning, quality, automation). Contribute to governance, responsible model usage, and data quality standards. Mentor juniors … cross-functional data teams. Strong stakeholder communication skills and the ability to explain commercial impact. Understanding of ML Ops vs DevOps and broader software engineering standards. Cloud experience (any platform). Previous mentoring experience. Nice to have: Snowflake or Databricks Spark, PySpark, Hadoop or similar big data tooling ...

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 ...

Technical Product Manager £60,000–£65,000 We’re looking for a Technical Product Manager to act as the link between engineering and product within a fast-growing, sports-focused organisation. This role suits someone from a software engineering background who understands how systems are built … streaming tools, in a hands-on environment where collaboration and ownership are key. What you’ll be doing Bridging the gap between product and engineering teams Translating business and product needs into technical direction Supporting product planning and delivery Working closely with engineers and third-party developers Reviewing technical ...

Company Raised $200m+ for charity worldwide Human-centric business Caring Culture – good people doing good for the world The Role Work cross-functionally with software engineering, Product and UX to bring this platform to life. Help architect, design, and implement well-tested new product features. This role … just about coding, its about influencing product and business impact Desired Skills & Experience Fullstack JavaScript/TypeScript/Node.js software engineering experience SASS, DynamoDB, AWS Lambda, and Serverless Framework are all beneficial eCommerce/Shopify experience is a bonus ...

senior, hands-on consulting role combining deep technical leadership with strong client presence, shaping both client outcomes and the firm’s long-term AI engineering capability. Purpose As client demand for AI-native transformation accelerates, the consulting practice is expanding its engineering capability across agentic systems, retrieval, ontologies … enabled execution. The Consulting Engineer is a hands-on AI systems builder who combines deep engineering craft with commercial and product thinking to design, build and deploy agentic, retrieval and ontology-based systems for enterprise clients. You will work directly with senior client stakeholders and alongside consulting and orchestration ...

Senior Software Engineer (Python) 💰 Up to £130,000 + excellent benefits (including work from abroad) 📍 Hybrid - 2 days onsite in Central London (London Bridge) Are you a Senior Python Engineer who loves solving deep technical challenges? Want to help reinvent how future hardware is created? 🚀🔬 Join a top-tier … engineering team building a revolutionary platform that turns high-level hardware requirements into complete circuit designs. You’ll work on complex problems at the crossroads of software, data and engineering, collaborating with experts across multiple disciplines. What You’ll Do Own and evolve backend systems across data ...

offices (on average once per week), and were happy to discuss flexibility to make this work for you. We are looking for a Lead Software Engineer who will be responsible for the design, development, and deployment of high-quality software solutions. This role involves leading a team … engineers on high-profile projects, ensuring best practices are followed, and driving continuous improvement in software development processes. You will collaborate closely with cross-functional teams, including product management and UX/UI, to ensure that our software solutions meet business and customer needs. You will be responsible ...