Jobster Jobs in UK

Software Engineer - B2B2C Health Scale-up Up to £75,000 + Equity London (Hybrid – 2 days in office) JavaScript React Node.js TypeScript In Product is partnered with a profitable, growing health tech scale-up operating in the B2B2C space. As a Software Engineer, you’ll join a small, experienced engineering team and work within a cross-functional squad alongside a Product Manager and Product Designer.

Job Title - .NET Developer (Contract) Location - London (Hybrid – 2–3 days onsite) Contract Type - Contract (Outside IR35 / Inside IR35 – depending on client) Duration -12 months (likely extension) Day Rate - Competitive Role Overview We are looking for an experienced .NET Developer to join a delivery-focused engineering team working on business-critical systems in a fast-paced London-based environment. Key Responsibilities Design, develop and maintain applications using C# and .NET / .NET Core Contribute to the development of RESTful APIs and backend services Work on the modernisation and refactoring of legacy .NET applications Collaborate with product managers, business analysts and QA to deliver high-quality features Write clean, testable and maintainable code following best practices Participate in code reviews and contribute to improving engineering standards Support production systems, including bug fixing and performance tuning Work within Agile / Scrum delivery teams Required Skills & Experience Strong commercial experience with C# and .NET / .NET Core Experience building and consuming REST APIs Solid understanding of object-oriented design and software engineering principles Experience with SQL Server and relational databases Familiarity with unit testing frameworks (e.g.

Senior Software Engineer (Robotics) London (On-site, 5 days/week) Permanent Role With Excellent On-site Benefits We’re looking for a Senior Software Engineer to help turn our advanced robotics stack into a dependable, real-world product. #Robotics #SoftwareEngineering #CPlusPlus #ROS #AutonomousSystems #RoboticsJobs #Innovation #HardwareIntegration #TechCareers #Jobster Show less

Software Engineer London / Hybrid Perm Role £80,000 - £100,000 Harrington Starr has partnered with a fast-growing fintech that’s transforming how businesses manage foreign exchange and treasury operations. Key Responsibilities Develop and maintain software across the full stack Contribute to architecture and design decisions Support, optimise, and maintain production code Research and integrate new technologies Foster a culture of engineering excellence and continuous improvement Key Requirements 5+ years’ experience working with C#/.NET Experience developing front and middle office systems Strong SQL skills Experience with cloud-native solutions (Azure or AWS) Knowledge of event-driven, microservices architectures Full SDLC experience — from design through delivery and support Key Benefits Join a fast-scaling fintech building next-generation financial technology Work on complex, high-impact systems handling large-scale transactions Collaborative, innovative, and growth-oriented team culture Hybrid working model with flexibility and autonomy Please apply via the link provided or reach out to me directly to book in a confidential phone call - ollie.bluck@harringtonstarr.com #Jobster Show less

Position: Senior Data Scientist Salary: £70,000 - £80,000 base + 12% flexible benefits Location: London, UK (Hybrid – 3 days in office, 2 remote) An FTSE-listed global FinTech company is looking to hire a Senior Data Scientist in their Trading & Operations function, with deep experience leading high‑impact data science projects end‑to‑end, from problem framing and exploratory analysis through modelling, experimentation and working with MLE. You’ll collaborate with data engineering, platforms, web, messaging, analytics, marketing, risk and product.

Quantitative Developer - London/Remote 40+ leading quant firms seeking top-tier developers. What you'll do: Build low-latency trading systems and infrastructure Develop quantitative libraries and research platforms Optimize execution algorithms and risk systems Requirements: 2+ years quant dev or HFT experience Expert C++/Python skills Financial markets and trading systems knowledge Our network: Pay: $180K-$2M+ based on experience Locations: London, Remote Focus: Ultra-low latency, systematic platforms, research infrastructure From prop trading tech to systematic fund platforms.

You’ll be part of a small, senior-leaning engineering group responsible for: Core Order Management Systems (OMS) Exchange gateway connectivity Market data ingestion Real-time risk Internal orchestration and tooling that supports live trading These systems handle real capital, real counterparties, and real-time failure scenarios. The work is: Highly hands-on and ownership-driven Focused on systems where microseconds matter End-to-end: design → implementation → testing → production behaviour Pragmatic, with minimal process overhead and fast iteration cycles Seniority 4 open roles ranging from Junior (2+ years) to Lead (6+ years) Interview Process (3 Stages) 60 min Video call – Engineering Manager 90 min Video call – Technical deep dive with Tech Lead 60 min Video call – Final cultural interview with C-Suite If you’re interested in core trading infrastructure, low-latency systems, and technically demanding work, I’d be happy to share more details in a conversation.

A leading hedge fund is seeking an ambitious Python Quantitative Developer to join its London office. Requirements Bachelor’s degree or higher in Computer Science or a related field (or equivalent experience) Strong proficiency in Python 3+ years’ experience as a Quantitative Developer Proven experience working in a Front Office environment #Jobster Show less