Senior developer Jobs in UK

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

Tech & Environment Python (3.11), Django, PostgreSQL, GraphQL, Redis, Docker, collaborative, high-performance engineering culture. Strong software engineering experience with Python.

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

Key Responsibilities Design, build, and maintain software solutions using C# and .NET technologies. Strong understanding of messaging patterns, asynchronous processing, and distributed system design.

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.

Software Engineer Energy & Climate Tech London (Hybrid) A fast-growing energy technology company is building the intelligence layer for a cleaner, more resilient power grid - and they’re looking for engineers who want their code to have measurable, real-world impact. The team is developing large-scale optimisation systems that coordinate EV charging, home batteries, and heating to automatically shift demand toward cleaner, lower-cost energy.

About Agoda At Agoda, we bridge the world through travel. The Opportunity Agoda Platform team is looking for developers to work on mission-critical systems that serve millions of users daily.

Technical Requirements Advanced understanding of C++. Championing Inclusion at WBD Warner Bros.

Indepth understanding of clinical programming and/or statistical programming processes and standards. Extensive experience with statistical programming using the SAS software including development and use of SAS Macros.

This role is in Analytical Data Science, a core function within Product Development Data Sciences (PDD) that provides strategic leadership and scientific rigor across Development at Roche. The role involves creating and validating datasets in accordance with Study Data Tabulation Model and Analysis Data Model standards, ensuring compliance with regulatory requirements and Roche standards.

Our 'Core' games team supports internal and external studios worldwide in creating, developing, and launching new hit games, whilst our 'Live' games team focuses on delivering higher engagement on our existing and successful games. Joining our Live games team means collaborating with gaming industry experts on globally renowned, enduring games while embracing exciting new entrepreneurial ventures.

Interesting & meaningful work. High-trust organization.