Developer jobs in Westminster

Who you are The "Agentic" Expert: You have hands-on experience building autonomous or semi-autonomous agents using frameworks like LangGraph, CrewAI, or AutoGen Technically Versatile: You are proficient in Python, with experience in web frameworks (FastAPI/Node.js) and building/consuming RESTful API

eFinancialCareers

A leading global investment bank in the City of London is looking to hire a Quant Developer – Credit on a contract basis. This is an initial 6-month contract with the option to extend, paying a day rate in the region of £800 to £925 per day. This role sits within a Quantitative Analytics function, i

Larbey Evans

£70,000 - £80,000 /year

Applications Developer We are on the lookout for a versatile, forward-thinking Applications Developer who excels in developing high-performance web, mobile, and client-server applications, and who takes a proactive approach to technology trends in the legal industry to meet evolving business needs.

Job Description Job Description As part of its ambition to become a Top 3 contributor in the European ETF market, our client is continuously improving its ETF Market Making platform to better serve its clients. To this end, there is a investment on its London AMM ETF platform to bring it to the next

Ibex.ai

About Ibex.ai Ibex is a fast-growing AI startup building an agentic, real-time decision engine that optimises customer interactions for measurable profit. Our platform blends advanced machine learning, deep learning, and reinforcement optimisation to decide the best action, message, or offer for eve

M3USA

Company Description About the Business Division: This role is part of ONEHealth Communications, a subsidiary of M3 Inc., which is a specialist Healthcare Communications agency working in partnership with our clients to deliver end-to-end marketing services across three key areas of Media Buying, Cre

eFinancialCareers

Role Type: Contract Title: Senior C# Engineer Client: Established Financial Institution Rate: Up to £600 P/D! Location: London/Hybrid Duration: 6 month rolling My client is a well-established and successful tech house working in the finance sector who are looking a talented senior C# Developer, with

As one of the world's largest networks of audit, tax and consulting firms, RSM delivers big ideas and premium service to help middle-market businesses thrive. We are a fast-growing firm with big ambitions -- we have a clear goal to become the premium adviser to the middle market, globally. This visi

Lead Full Stack Software Developer | £80,000 - £100,000 We're working with a fast-growing UK SaaS technology company building data-driven digital products on this exciting opportunity. This is a high-impact, hands-on leadership role where you will shape the next generation of customer-facing platfor

Lead Full Stack Software Developer | £80,000 - £100,000 We're working with a fast-growing UK SaaS technology company building data-driven digital products on this exciting opportunity. This is a high-impact, hands-on leadership role where you will shape the next generation of customer-facing platfor

Solo60

About Solo60 A London-based fitness scale-up whose platform manages dynamic bookings, PT matching, and studio analytics. Stack: React Native (Expo), Next.js, Supabase, Vercel/AWS, Stripe, GitHub Actions, Hex, Figma — with a growing IoT footprint across studios. The Role You'll be the second Full Sta

Zaizi is looking for a Senior Software Developer with solid technology skills, but who is also passionate about improving outcomes and the user experience. You’ll be reliable in your own deliverables but also curious about and offer innovative ideas to others in a mutli-disciplinary team. Our work c

About Us:- Net2Source Inc. is one of the fastest growing diversity certified global workforce solutions companies with an unprecedented YoY growth of over 100% for last 6 years working with Fortune 1000/Global 2000 across 34 countries and 5 continents including North America, South America, Europe,

Title CAFM Developer About KBR And The Project KBR are a global technical solutions provider with 28,000 employees worldwide, with operations in 34 countries delivering to customers in 80 countries. KBR work collaboratively with their wide customer base to deliver solutions that strive to create a b

Title: CAFM Developer About KBR and the Project KBR are a global technical solutions provider with 28,000 employees worldwide, with operations in 34 countries delivering to customers in 80 countries. KBR work collaboratively with their wide customer base to deliver solutions that strive to create a

Business Development - Luxury Interiors | Central London | £45-50k + Uncapped Commission (OTE £80k-£150k+) Are you a commercially driven relationship-builder with a passion for property, design, and delivering exceptional client experiences? I'm representing a fast-growing interiors brand that is re

Shawbrook is a specialist bank driven by a purpose to power up ingenuity to create opportunity, every single day. We offer a diverse range of savings and loan products. From personal and business savings accounts and loans for wedding and new cars, to complex financial credit facilities for business

Software Engineer – Low Latency / Trading Systems London | Office-Based | Permanent A high-performing proprietary trading firm is looking to hire a Software Engineer to join its core engineering team building the systems that power live trading across global electronic markets. This is a strong oppo

Avanti

£45,000 - £50,000 /year

Avanti is working with an exciting early-stage 5-person FinTech startup based in London that is about to launch its first product in the embedded finance space. Their platform helps businesses unlock working capital through intelligent, AI-driven invoice financing solutions, integrated directly into

About xAI xAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive