principal .net engineer jobs in Southampton

Principal Software Engineer .NET £90,000-£100,000 Remote (UK) Are you passionate about writing clean, scalable code and ready to shape a platform used by merchants across the globe? We're working with a fast-growing global payment processing platform that’s scaling rapidly after a major acquisition. They are building a high-performance, merchant-first ecosystem that prioritises quality,...

Job Title: .Net Software Engineer Location: UK based Remote with monthly site visits Salary: £32,000 - £38,000 (National) and £38,000 - £43,000 (London) per annum + exceptional pension Why Apply? This is a fantastic opportunity for a talented Software Engineer looking to develop their career within a forward-thinking, tech-for-good organisation. Working with modern technologies such as .NET,...

Senior Software Engineer .Net 📍 Location: UK remote | We are working with a high-growth global fintech, renowned for delivering world-class payments-related software and technology. This company is building the next generation of capabilities that power a merchant-first ecosystem. They believe that focused, empowered teams can achieve great things. You’ll be joining a curious, driven, and...

Senior .NET Engineer Are you a talented .NET Developer looking to take on a brand new challenge? Do you want to be part of a newly formed team of software engineers in a growing product-focused company, shaping the direction of their technical solutions from the ground up? My client is seeking a Senior .NET Engineer to join their innovative product team. This is a unique opportunity to work on...

Job Title: Front Office Software Engineer (C# .NET) Employment Type: Full-time Location: Central London (Hybrid - 3 days onsite per week) Compensation Package: Competitive salary, 20-30% bonus, private medical and dental (family coverage included), 10% employer pension contribution, group life insurance, income protection, and additional benefits About the Company A global leader in energy...

Software Engineer (.Net) SC Cleared Permanent Location: Fully remote / WFH (UK residency only) Salary: £50,000 - £55,000 (+ on-call £5K + a comprehensive range of Employee Benefits) Essential Skills: C#.Net, MVC, ASP.Net, SC Clearance We are looking to recruit an SC Cleared Software Engineer to a leading technology consultancy. This is a home based role with limited travel for team...

You should have at least a few years of experience building real things.

You should be comfortable with serverless or containerised environments, and ideally you’ve worked with Azure before.

You should be okay with ambiguity, and you should enjoy collaborating with people who care about what they’re building.

You will work closely with a large number of teams, both internal and external, with inner-sourced development our standard way of working. Ownership is one of the core engineering principles in our organisation - we write it and we own it. Engineers are expected to take responsibility for their work from discovery to production, ensuring the ongoing reliability and stability of our systems.

Principal Software Engineer Fully Remote | Permanent | Competitive Salary + Benefits Harrington Starr has partnered with a leading Global Payments Technology company who are seeking to hire a Principal Software Engineer to join their senior engineering leadership team. This is a rare opportunity to combine hands-on development with strategic influence, guiding architecture decisions and shaping...

You will join our Simulation and Training sector at Broad Oak Works Portsmouth, part of BAE Systems Maritime and Land Defence Solutions, working on our MIMESIS product.

You will also provide technical guidance to the engineering team, working closely with System Design Authority, to develop and support MIMESIS for our customers.

Overview of role The Senior / Principal Consultants will lead on technical audits and commercial reports for Industrial and commercial clients to help them shape and define Energy Efficiency and Decarbonisation pathways to deliver net zero and regulatory objectives. This consultancy work will then aim to be converted into actual capital engineering programmes through the same business, with the...

Job Title: Senior & Principal Civil Engineer - Water Salary: £50,000 - £70,000 (dependent on experience) Location: Multiple UK offices including Newcastle, Leeds, Warrington, Manchester, Redditch, Birmingham, Exeter, Bristol, Cardiff, Reading, London, High Wycombe, Brighton, Glasgow, and Edinburgh. Type: Permanent, Full Time / Flexible Hybrid Working About the Role: This is an exciting...

Job Description Senior / Principal Electrical Engineer - Fareham | Building Services Consultancy Are you an experienced Electrical Engineer ready to take on more responsibility and lead projects within a respected building services consultancy? This independent practice, based in Fareham, is well established across the South of England and delivers high-quality mechanical and electrical design...

You will work independently and proactively on technical aspects from a projects inception, determining client briefs, to the delivery and close out of projects in accordance with best practice.

You will instruct, supervise and mentor junior staff in the design and management of schemes and work with clients to ensure delivery of projects to time and cost, and to help manage change.

You will foster a collaborative and inclusive culture, champion innovation, and ensure the successful delivery of industry-leading solutions. Design and Technical Responsibilities:

We're partnering with a scaling infrastructure company that's fundamentally transforming how digital and physical components interact in the age of AI. Their core mission is to empower teams to build and deploy sophisticated systems by providing scalable, secure, and robust infrastructure solutions for development, deployment, and scaling. Essential experience is being a Go expert and experience...

Job Description Senior / Principal Civil Engineer - Consultancy Central London (office-based, with site visits) Permanent Role | Leading UK Civil & Structural Consultancy Competitive Salary + Excellent Benefits I'm working with a well-established, multi-office civil and structural engineering consultancy that has built a strong reputation for delivering complex and high-profile development...

Up to £90,000 Remote, UK & Ireland No Sponsorship Opportunities We’re hiring for our client, a fast-growing global payment processing platform that’s scaling rapidly after a major acquisition. They’re on the lookout for talented .NET Software Engineers to join their journey of building the next generation of API-driven, merchant-first technology. Why join them? They believe empowered teams...

Job Description Associate Director / Principal Engineer – Overhead Lines (OHL) Location: UK Wide, flexible working, no set days in office. Salary: Competitive + Car Allowance A leading engineering consultancy is seeking an experienced Associate Director/Principal Engineer to join its Transmission & Distribution team with a specific focus on OHL Design. This role offers the opportunity to work...

You will work within an enablement team whose mission is to help engineering teams deliver software faster, safer, and more reliably. The role blends technical depth with leadership: we need people who can think strategically, challenge the status quo, and guide the evolution of our on-premises private cloud platform.