21,213+ Java Developer Java React Springboot Jobs in London, UK — Local Employers Hiring June 2026

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Full Stack Engineer

Full Stack Engineer 3 days in London £70,000 to £85,000 trg are partnered with a data platform and insights provider used by major global brands to navigate and engage virtual worlds. They are a start up with ambitious growth plans over the next 24 months, fostering a culture of c ...

Technical Lead

Technical Lead London | Hybrid 2-3 days pw Permanent £115-135,000 pa + bonus + strong package Curated is partnered with a fast-growing InsurTech business looking to hire a talented Tech Lead from a modern .Net, React and TypeScript background as ...

Breaker/Builder at Sanctuaryhealth.io

Job Title Breaker/Builder (Forward Deployed AI Engineer) Company Sanctuaryhealth.io - Profitable, high-growth healthtech startup reimagining patient care. Job Description Join a high-growth startup as a Forward Deployed AI Engineer, bridging the gap between clinical ...

Artificial Intelligence Engineer

The Role: AI Engineer We are looking for top tier engineers to support us in building AI products. You will lead the development of algorithms that push the limirs of what is possible with LLMs. What You’ll Own Production-Ready AI: D ...

Engineering Lead (+ Equity) at $27.5M Series B global benefits & fintech infrastructure startup

Job Overview Job Title: Engineering Lead Salary: Not Disclosed Company Description: $27.5M Series B global employee benefits and fintech infrastructure startup Job Description As a player-coach Engineering Lead, you will spearhead a cross-funct ...

Senior Full Stack Engineer (+ Equity) at SYSTM

Job Title: Senior Full-Stack Engineer Company: SYSTM - VC‑backed fintech building the stablecoin financial OS Job Description: As the most critical hire of 2026, you will own the technical architecture of a platform revolutionizing cross‑border finance. Working direc ...

Front End Engineer Up to £120k + Significant Equity

Frontend Engineers: Are you ready to ride the rocket of an AI-native data orchestration platform that's already 100×'d usage and quintupled revenue in the last year? In a small, elite team, you'll own high-impact frontend features end-to-end (with opportunities to influence backend when it makes sense) ...

Founding AI Engineer (£100k–150k + Equity) at Pharosyn

Job Title: Founding AI Engineer Salary: £100k–150k + Equity Company Description: Pharosyn - EF-backed AI startup for pharma Job Description: Join Pharosyn as a founding engineer to automate competitive intelligence in the pharma and biotech industries ...

Full Stack Product Engineer Innovative AI Start Up

Salary £60 – 80,000 base + substantial stock Summary Fantastic opportunity for a Product Engineer who thrives on project ownership to join a growing AI‑auditing tech firm. Founded in 2023, and backed by some big-name investors, my client has built a trusted platfo ...

Full Stack Engineer

Senior Full Stack Engineer – Scaling Series B HealthTech Hybrid working – London based Node.js, TypeScript and React We’re partnered with a fast-growing consumer technology driven business who are now looking for a Senior Software Engineer as they continue to scale. The bu ...

Product Engineer (£80k £130k + Equity) at Notion Capital backed defense tech startup

Job Title Product Engineer Salary £80k-£130k + Equity Company Description Notion Capital-backed defense tech startup building an AI-native OS for military production Job Description You will join a high‑calibre team building AlliedOS, the conn ...

Product Design Engineer AI

Product Design Engineer - AI (Contract | UK Remote) You design it. You build it. You ship it. If that's how you work, read on. We're hiring for one of the world's most recognisable tech brands - a contract role until December 2026, 100% remote within the U ...

Full Stack Engineer

We are partnered with a well-funded, early-stage fintech building critical infrastructure for the digital assets industry. They are looking to make their first full-stack engineering hires to join their London team. This is a ground-floor role at a company with serious momentum - you'll be w ...

Full Stack Engineer

Full Stack Engineer 3 days in London £70,000 to £85,000 trg are partnered with a data platform and insights provider used by major global brands to navigate and engage virtual worlds. They are a start up with ambitious growth plans over the next 24 months, fos ...

Technical Lead

Technical Lead London | Hybrid 2-3 days pw Permanent £115-135,000 pa + bonus + strong package Curated is partnered with a fast-growing InsurTech business looking to hire a talented Tech Lead from a ...

Engineering Manager at Lendable.co.uk

Job Title: Engineering Manager Salary: Not Disclosed Company Description: Lendable.co.uk - £3.5bn valuation unicorn fintech Job Description: As an Engineering Manager, you will lead the team responsible for the Zable App, serving over 1 millio ...

Full Stack Engineer (£100k + Equity) at yhangry

Company Description yhangry - YC-backed AI-native marketplace Job Description Join yhangry as the third engineer to rebuild the UK's largest private chef marketplace from the ground up. You will architect a brand-new, AI-native platform for global expansion, moving beyond tradition ...

Founding Product Engineer (£110k £145k + Equity) at $8.5M seed funded AI logistics startup

Job Title Founding Product Engineer Location London, UK Salary £110k-£145k + Equity Company Description Venture-backed AI startup with $8.5M seed funding building agentic systems for global freight forwarding. Job Description Join an ...

Engineering Manager at Lendable.co.uk

Engineering Manager Location: London, UK Salary: Not Disclosed Company: Lendable.co.uk - £3.5bn valuation unicorn fintech Job Description As an Engineering Manager, you will lead the team responsible for the Zable App, serving over 1 million customers. You will b ...

Engineering Lead

Engineering Lead – AI-SaaS Platform | Tripled ARR in 12 months Remote-first (UK) with hybrid London office option Up to £150,000 per annum plus equity Typescript/Node, React, GCP/AWS The Engineering Lead We’re hiring Engineering Leads to g ...

Engineering Manager

Hiring: Engineering Manager - Full‑Stack TypeScript & Mobile Location: London (Hybrid, 1 day per week onsite) Salary: Up to £100k + up to 30% bonus + generous pension We are supporting a major UK financial services organisation as they expand their digital engineer ...

Engineering Lead (+ Equity) at Ben

Job Title Engineering Lead Company Description Ben - Series B fintech infrastructure startup Job Description As Engineering Lead, you will spearhead a cross-functional squad building complex B2B SaaS solutions across HR, benefits, and fintech. This player-coach ...

Senior DevOps Engineer

The Role We're hiring a Senior DevOps Engineer to own our CI/CD platform and developer experience. You'll be the person who makes shipping software fast, safe, and enjoyable, building the foundations that every engineering team relies on daily. What You'll Do Own and evolv ...

Lead Software Engineer (DevEx)

At On, we believe technology should move as fast as a runner. We are building the foundation that allows our engineering organization to scale, innovate, and deliver value without friction. We are looking for a Senior or Lead Software Engineer to join the Developer Experience (DevEx) team. In this ...

Project Quantity Surveyor

Intermediate / Project Quantity Surveyor Residential Developer | London While many residential developers are slowing production and reducing headcount, this London developer is doing the opposite. With a strong pipeline of phased ...

Software Engineer

Overview Python Developer - London - Energy Trading - 90k RJC is working a Python developer role for a global energy trading company based in London. Working as part of the IT Delivery team within the Front Office, they are looking for a developer to assist in the creation and suppo ...

Materials Buyer

Overview Materials Buyer – Residential Salary: £40,000 - £65,000 DOE Location: North London Region: London Award winning developer who builds bespoke design properties is seeking a Materials Buyer to join their busy growing office. The developer ...

Senior Full Stack Engineer — FinTech (Hybrid London)

Capital on Tap is looking for a Senior Full-Stack Engineer to build innovative credit card and payment products. This hybrid role requires in-office work at the London Moorgate office for two days a week. Your mission will involve using .Net technology to create scalable solutions, collaborating with p ...

Senior Full Stack Engineer — AI Driven Web Apps (Hybrid)

Materiom, an impact-focused tech startup based in Greater London, is seeking a full-time Senior Software Engineer to drive the development of data- and AI-heavy web applications. The role demands expertise in full-stack development, especially in front-end technologies like React and TypeScript, as well as backe ...

Hands On Lead Full Stack Engineer Manager (Hybrid)

Trust In SODA is seeking a Full-Stack Engineering Manager to lead a core domain end-to-end in a seed-stage climate tech company. You'll build products with real-world consequences and directly engage with users. The role involves customer support rotations and management of a small squad after initial immersi ...

Senior Full Stack Engineer — FinTech (Hybrid London)

Capital on Tap is looking for a Senior Full-Stack Engineer to build innovative credit card and payment products. This hybrid role requires in-office work at the London Moorgate office for two days a week. Your mission will involve using .Net technology to create scalable solutions, collaborating with p ...

Technical Lead: Hands on Cloud Native Leader (Hybrid, London)

Consortia Group is seeking a Technical Lead in London to lead a squad of developers while remaining hands-on with coding. This role offers excellent growth opportunities as you contribute to architecting and improving cutting-edge solutions in the Fintech space. As the Technical Lead, you'll oversee pr ...

Senior Frontend Engineer | Hybrid AI Startup, Path to Tech Lead

Plan:it in London is seeking a Senior Product Engineer who is heavily frontend leaning. You will collaborate with users, designers, and engineers to deliver features end-to-end. This role offers significant impact on product direction using modern AI tooling, with a path to becoming a Tech Lead in as little a ...

Senior Product Engineer – AI‑Driven, End‑to‑End Platform

Switch Tech Talent is looking for multiple Senior Product Engineers to join their high-calibre team in Central London with hybrid working options. You will own features end-to-end, from database design to seamless customer experiences, in a corporate-free environment. Successful candidates will have 7+ ...

Hands On Lead Full Stack Engineer Manager (Hybrid)

Trust In SODA is seeking a Full-Stack Engineering Manager to lead a core domain end-to-end in a seed-stage climate tech company. You'll build products with real-world consequences and directly engage with users. The role involves customer support rotations and management of a small squad after initial immersi ...

Senior Full Stack Engineer — AI Driven Web Apps (Hybrid)

Materiom, an impact-focused tech startup based in Greater London, is seeking a full-time Senior Software Engineer to drive the development of data- and AI-heavy web applications. The role demands expertise in full-stack development, especially in front-end technologies like React and TypeScript, as well as backe ...

Founding Full Stack Engineer, AI Native Marketplace

A leading AI-native marketplace in the UK is looking for a Full Stack Engineer to help rebuild its private chef marketplace. In this role, you will develop a new AI-driven platform that utilizes innovative technologies such as TypeScript, React, and Node, while also managing scalable infrastructure on Kubernetes ...

End to End Full Stack Engineer for AI‑Driven Security

Maze is seeking a Full Stack Engineer to own the complete stack from UI to API, working on a customer-facing product in generative AI and cybersecurity. This is an opportunity to be an early team member at a well-funded startup, contributing to end-to-end feature development. The ideal candidate will b ...

Senior Frontend Engineer — AI Platform UI/UX Lead

IC Resources is seeking a Senior Full Stack Engineer with a strong frontend focus to join their innovative start-up in the AI industry. You will lead UI/UX design across all web products, building systems that enhance the user experience and enable high performance at compiler level. The ideal candidat ...

Senior DevSecOps Cyber Security (Consulting)

The Company Cognizant (NASDAQ:CTSH) is a leading provider of information technology, consulting, and business process outsourcing services, dedicated to helping the world's leading companies build stronger businesses. Headquartered in Teaneck, New Jersey (U.S.), Cognizant has over 340,000 employe ...

Engineering Team Lead Node.js & AWS (Hands On)

What You BringProven ability to lead engineering teams while still being hands-onDeep experience in Node.js, Vue or React, PostgreSQL, and AWSStrong grasp of DevOps, CI/CD, and secure SDLC practicesComfort with mobile (Cordova, iOS/Android) and...Help Us Build the Futu ...

Junior C# Engineer

Junior C# Developer Trading Systems £80,000 Plus Bonus + yearly Ski Trip Quant Capital is urgently looking for a Junior C# Developer with experience of Trading or Financial Services to join our high profile client. I am looking at junior engineers keen on learning back ...

User Reearch Lead UX Consultant MOD SC CLearance

Your newpany User Researcher – Lead UX ConsultantPublic Sector Programme | MOD Security Clearance Required (DV Preferred)I’m currently looking for an experienced User Researcher / Lead UX Consultant to join a high‑profile Public Sector digital programme. This is a senior, hands‑on role where you’ll ...

Full stack Engineer London

Model ML is the AI workflow builder transforming how major financial institutions produce and validate client-ready work. Model ML converts complex, manual processes into fully automated AI systems that scale across global teams. In under a year, Model ML has become one of the fastest growing enterprise AI ...

Mid Level Frontend Engineer

Job Summary ENGINEER III – Mid-Level Frontend EngineerLocation: Farringdon, London (Hybrid, 1 day per week in the office)Division: Live Nation InternationalContract Terms: Permanent About Live Nation The Live Nation Digital Tech Team (LNDT) drives the fan experience acr ...

Frontend Engineer – Full Stack

London / Hybrid 3 days per week We’re building a modern technology platform that applies data engineering and AI to a problem with real global consequence: proving trust and transparency in supply chains. Our work helps protect people from exploitation, gives brands and producers confidence in what ...

(Senior) Mobile Engineer

The role We are hiring this role at multiple levels – mid & senior. You will contribute to the development of high‑quality, reliable, and medically sound mobile applications for our products, using React Native across iOS and Android platforms. Your work will play a key role in delivering clinica ...

Senior Frontend Engineer Growth Experimentation

About Eucalyptus We’re on a mission to make good health last a lifetime. More than 1 billion people live with obesity worldwide, driving preventable chronic conditions. We’re here to build better long-term care. Euc is the company behind Juniper, one of the world’s largest weight- ...

Full stack Engineer

Company Overview Model ML is the AI workflow builder transforming how major financial institutions produce and validate client-ready work. Model ML converts complex, manual processes into fully automated AI systems that scale across global teams. In under a year, Model ML has become one of the fa ...

Senior Software Engineer, Content Agent

We're hiring a senior engineer for Content Agent – Sanity's operations layer for structured content. It's the system that turns content work (bulk edits, audits, translation, publishing) into things an agent can actually run. It lives in Dashboard, Studio, Slack, and behind a headless API. If you've spen ...

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