851 reactjs developer jobs in United Kingdom.

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Quant Capital

Django Developer - Investment Management

18 days ago

On-site

£90k per annum

Django Developer – Investment Management £90,000 + Bonus + Bens Visa Sponsorship Provided Quant Capital is urgently looking for a Django Developer to join our high profile client. The firm is an offshoot of a well known Hedge Fund. They Run around £2 Billion of assets. No experience of finance is needed. With several greenfield ...

London, United Kingdom

Adecco

Senior Azure Data Engineer / ETL Developer

20 days ago

On-site
Contract

£600 GBP - £650 GBP

... sexual orientations, gender identities, and more, and aim to create an inclusive environment where people can thrive. This is a Senior Azure Data Engineer – ETL Developer contract role based in London, with three days per week onsite. The initial contract is 12 months, with a possible extension, and the rate is £600–£650 inside ...

London, United Kingdom

LA International Computer Consultants Ltd

AI Developer (IT)

20 days ago

Hybrid
On-site
Contract

Job title: AI Developer (Backend & Frontend) Location: London (Hybrid, Minimum 2 Days Onsite per Week) Contract Length: 12 Months IR35 Status: Inside IR35 Rate: Negotiable We are currently recruiting for multiple AI Developer opportunities to support a major enterprise AI programme. These roles offer the chance to work ...

City of Westminster, United Kingdom

Verisk

Full Stack Software Developer (.NET/AWS)

20 days ago

Hybrid
Full-time

We have an exciting opportunity for a Full Stack Software Developer to join our growing engineering team, building cloud-native SaaS platforms for the insurance industry. You will help design and develop scalable distributed systems and shared services that support multiple products used by insurers, suppliers, police forces ...

Norwich, United Kingdom

Solirius Reply

Node Developer

20 days ago

Full-time

Backend

... their needs, and translating them into effective outcomes. You understand and align with Solirius Reply Values. The Role We are looking for an experienced Node Developer with Java or Front End Development experience to join our team here at Solirius. You will be working as part of a team, developing and delivering exciting ...

London, United Kingdom

Vivid Resourcing

Modern C++ Developer

20 days ago

Remote
Hybrid
On-site
Full-time
Contract

... week, 3 days per week on site About the role Our client is an international organisation working in chip manufacturing technology, looking for freelance C++ Developers to join a project based in Leuven, Belgium. The engagement is for 12 months, with the possibility of extension, and is open to both medior and senior developers. ...

United Kingdom

Spektrum

Workflow Automation Developer

20 days ago

On-site
Contract

... integrations, business rules, test results, known limitations, technical dependencies, and recommendations for enduring implementation. - Collaborate with enterprise developers, DevSecOps teams, platform owners, system integrators, data teams, cybersecurity personnel, and other scaling organizations to support transition from CAPDEV ...

United Kingdom

Scale Factory

Senior Intelligent Automation & Low-Code Developer (Power...

20 days ago

Hybrid

... of stakeholders to gather requirements, demonstrate solutions, and support successful delivery. - Team Contribution & Mentorship: Support and guide junior developers, sharing knowledge and contributing to a strong team culture. - Continuous Improvement: Stay current with emerging Microsoft technologies, Copilot capabilities, ...

London, United Kingdom

Spektrum

Capability Developer - DCIS

20 days ago

On-site
Contract

Spektrum supports apex purchasers (NATO, UN, EU and National Government and Defence) and their Tier 1 supplier ecosystem with a wide range of specialist services. We provide our clients with professional services, specialised aerospace and defence sales, delivery, and operational subject matter expertise.

United Kingdom

DataAnnotation

Embedded Systems Developer

20 days ago

Remote
Full-time
Contract

$40 - $125 per hour

... Location: Remote · Type: Independent contractor · Hours: Flexible hours · Payouts: Weekly Overview DataAnnotation is looking for an experienced Embedded Systems Developer to evaluate how frontier AI models handle real electrical and electronics engineering work. You bring the judgment you have already built over years of designing, ...

United Kingdom

Version 1

Senior OutSystems Developer

20 days ago

... and foster them, it’s deeply embedded within our DNA. Invest in us and we’ll invest in you!. Job Description We are seeking an experienced Senior OutSystems Developer to oversee the design, development, and deployment of enterprise-grade applications using the OutSystems low-code platform. The successful candidate will have ...

Manchester, United Kingdom

Invitise

NEC Developer

21 days ago

Remote
Hybrid
Contract

£350 per day

We're looking for a Lead NEC Developer for a leading UK organisation based in London on an initial 6 months contract, paying up to £350 per day (Inside IR35). This is a hybrid role with some remote working available. The successful Lead NEC Developer will be the technical authority for the NEC Housing/Asset Management ecosystem, ...

London, United Kingdom

Octopus Energy - incl. field/heating engineers

HubSpot Developer (m/w/d)

21 days ago

Energie neu denken. Infrastruktur neu bauen. Zukunft neu gestalten – bei der Energy Metering Germany GmbH, einem Unternehmen der Octopus Energy Group. Als innovativer Messstellenbetreiber treiben wir die Energiewende nicht nur voran – wir setzen sie technisch um. Digital, skalierbar und kompromisslos praxisorientiert.

United Kingdom

Forward Role Recruitment

Senior Magento Developer

21 days ago

Contract

£450 - £500 per day

Company: FORWARD ROLE RECRUITMENT Job Type: Contract Salary: £450 - £500 / daily []

Manchester, United Kingdom

micro1

Game Developer

22 days ago

Remote
Part-time
Contract

$500 USD

... work by applying their expertise to AI. As our global expert network grows, micro1 is building the human intelligence layer for frontier AI. Role Title: Game Developer Role Type: Contractor Location: Remote micro1 is engaging Game Developers to contribute to a pioneering customer project focused on evaluating and advancing ...

United Kingdom

DCV Technologies

KDB+ Developer

22 days ago

Hybrid
On-site
Full-time
Contract

£40k - £46k per annum

... applications - We collaborate with traders, quants, and business teams Technologies: - Git - Support - Linux - Python - SQL - Unix More: We are hiring a KDB+ Developer for a long-term position based in London, UK. The role follows a hybrid schedule, with three days a week in the office. last updated 42 week of 2026 [{"name": ...

London, United Kingdom

FIS

Developer, Professional Services

22 days ago

On-site
Full-time

Position Type : Full time Type Of Hire : Experienced (relevant combo of work and education) Are you curious, motivated, and forward-thinking? At FIS you’ll have the opportunity to work on some of the most challenging and relevant issues in financial services and technology.

London, United Kingdom

Jobgether

Svelte Developer

22 days ago

Remote
Full-time
Contract

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Svelte Developer based in United Kingdom. As a Senior Svelte Developer, you will take ownership of building a high-performance web frontend from the ground up for a growing B2B technology platform. ...

United Kingdom

Telecom Acquisitions Ltd.

Senior Developer

22 days ago

Full-time

Backend

£250 GBP - £500 GBP

Senior Developer Location: Horsham Salary: Negotiable depending on experience Employment Type: Permanent, Full-time Hours: 40 hours per week. Core working hours Monday-Friday (8:30am-5:30pm) About the Role We're looking for a skilled and proactive Senior PHP Developer to join our Development team, taking ownership of technical ...

Horsham, United Kingdom

Spectrum IT Recruitment

Senior Developer

22 days ago

Hybrid
On-site
Full-time

£60k - £85k per annum

... AI-assisted development tools while maintaining good engineering standards. - Enjoyment of solving technical problems, taking ownership and collaborating with other developers. Responsibilities: - Design, develop and operate a platform built around distributed services. - Develop backend services primarily with https://jobeax.com/link/JSd7UYCSg572jJDY ...

Southampton, United Kingdom