full stack ruby engineer jobs in London

London, United KingdomDev /Full-time /HybridA World-Changing CompanyPalantir builds the world’s leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more.The RolePalantir...

We’re seeking a future team member for the role of Full Stack Engineer (Senior Vice President) to join our team. This role is located in London.             In this role, you’ll make an impact in the following ways:Design and develop web front-end and back-end services for a new platform built to automate the management of the full lifecycle...

C# Full Stack Software Engineer – Fintech85,000 Plus 10% BonusRemote Working 2 days per month in the officeQuant Capital is urgently looking for C# Full Stack Developer to join our high profile client.My Client is a well known global (yet not too corporate) financial software (fintech) business that has developed a unique proprietary front office lending...

Contract Details 12 month Contract Role Senior Full Stack Engineer Location: Remote Salary: Competitive (Outside IR35) Type: 12 month Contract Myn is an AI-driven marketplace that connects candidates, clients, and recruiters. Myn collaborates with leading employers to offer exclusive, carefully matched contract and permanent positions. Our Recruitment...

A front-to-back trading software vendor is growing its QA function and looking for a Full Stack QA Engineer who can work across both manual and automation testing. This is a great opportunity to join a team building high-performance trading technology used by clients across the financial markets.You'll work closely with engineering, product, and operations...

ABOUT LENDABLELendable is on a mission to build the world's best technology to help people get credit and save money. We're building one of the world’s leading fintech companies and are off to a strong start:One of the UK’s newest unicorns with a team of just over 700 peopleAmong the fastest-growing tech companies in the UKProfitable since 2017Backed by...

ScienceMachine is building reliable, compliant AI for regulated drug development. We believe the healthcare system needs a step change in productivity: far more medicines developed far faster, so more patients can live free from disease. But drug development cannot be “vibe-coded.” In a regulated environment, AI must be trustworthy, verifiable, and...

Senior Full Stack Lead Engineer ReactJS, TypeScript, JavaScript, C#/.NET Banking LondonThis is a new and exclusive opportunity for a Senior Full Stack Lead Engineer/ software developer with expertise across ReactJS, TypeScript, JavaScript, C#/.NET to join this investment Banking client as they expand their full stack software developer team in London...

Full Stack Java Spring Software Engineer 100,000 Plus Bens Quant Capital is urgently looking for a Java Software Engineer for our high profile investment management vendor. Our client is a well known global wealth management HFT software business. They provide valuations and pricing of derivatives to most of the buy side. I am seeking a Java developer to...

Tech: Javascript, TypeScript, MongoDB, Angular, HTML5, CSS, BootstrapChallenge: Greenfield Trading platform, API development, industry specific challengesFirm: Well-known Fintech Trading Platform Vendor, City of London, 30 man flat global Dev TeamPay: 80k, Bonus- 750 training budget, Unlimited holiday, Pension, Life / Health, Some Flex WorkingJunior Full...

London, United Kingdom | Posted on 07/10/2026 Build the software that makes autonomous flight work at scale At sees.ai , we're building autonomous drone technology to change how some of the world's most important infrastructure is inspected and managed. And this isn't technology waiting for a use case. We're already delivering large-scale autonomous...

Are you an experienced engineer passionate about leveraging AI to redefine production stability at a global scale? We are seeking a Senior Full‑Stack Engineer to lead the development of next‑generation, AI‑enabled tooling within our Production Management division. This is a strategic position for a technical leader who wants to drive a multi‑year...

Senior Full Stack Engineer (TypeScript,AI/LLM) | London | £80,000 - £120,000] | Hybrid, 3 days onsite We're partnering with an AI-native software company building mission-critical tools for frontline public sector teams. Their users work in high-pressure environments where slow, fragmented systems cost time that matters. They're replacing that with a...

Harrington Starr is partnering with a leading investment management technology firm to hire a Full-Stack Developer.This is a hands-on role working closely with front-office users to develop, support and enhance a business-critical investment platform.The Role:Build features across the full stackDiagnose and resolve production issuesDeliver enhancements and...

Company DescriptionAt IFS, we're building the next generation of AI-native enterprise software, transforming how some of the world's largest organisations manage assets, operations and critical services.This is an opportunity to work at the forefront of modern AI engineering, building intelligent products that combine Large Language Models (LLMs), agentic AI...

About the companyThis early-stage technology company is building an AI-led operating system for capital markets and trading. Its initial product addresses the complex, operationally critical challenge of reconciling exotic and structured trades, with a long-term ambition to support workflows across the full trading lifecycle.The company combines deep...

Full Stack AI Engineer | Next.js, Python, LLMs | Fully remote, UK £85,000 to £105,000. Permanent.London. Fully remote across the UK. This is full stack in the literal sense. You will build the interface, backend and AI workflow, then stay with it when an agent stalls, a tool fails or the model returns something you did not plan for. Our client is an...

Join Vitesse, a payments platform redefining the insurance ecosystem. We are a licensed enterprise in the UK, Europe and New York, serving insurers, brokers, MGAs and TPAs with real‑time, global payments and full financial control. About the role Senior Full‑stack Software Engineer with a product‑centric mindset. You’ll shape features, collaborate...

We’re seeking a future team member for the role of Java Full Stack Engineer with AI-driven development exposure to join our Conventional Trust Platform team. This role is located in London.   In this role, you’ll make an impact in the following ways: Define and execute the enterprise Java full stack technology strategy, aligned with business...

Why Ryan? Competitive Compensation and Benefits Business Connectivity Reimbursement (Phone/Internet) Gym Membership or Equipment Reimbursement LinkedIn Learning Subscription Flexible Work Environment Tuition Reimbursement After One Year of Service Accelerated Career Path Award-Winning Culture & Community Outreach The Full Stack AI Engineer is an...