.NET Developer jobs in Southampton

Jobs found: 112
Keepnet
Southampton

Senior Backend Developer (.NET | AI-First SaaS Platform) Compensation: Competitive, based on location and experience Location: UK or Turkey (Hybrid – Office & Remote) Keepnet is an AI-driven SaaS platform experiencing strong, sustained growth in the UK with growing global momentum, helping organisations manage human cyber risk at scale. With Agentic AI live in production, Keepnet runs...

Hybrid
2 days ago
Curated
Southampton

You will join a cross-functional product engineering team working on the evolution and modernisation of a core SaaS platform. The focus is on building scalable, cloud-native services while improving reliability, performance, and long-term maintainability.

5 days ago
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Noir Consulting
Southampton

.NET Developer – Southampton (Tech stack: .NET Developer, .NET 9, C#, ASP.NET, C#, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, Web API 2, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, .NET Developer) We have several fantastic new roles for .NET Developer to join an ambitious Fintech start-up. This is your chance to work with the sharpest minds in private wealth...

Remote
3 days ago
TEAM
Eastleigh
£55,000 – £65,000

This is the kind of role where your work matters. As a Full Stack Developer, you’ll be helping to build a greenfield enterprise platform powering real-world IoT and telemetry systems used across critical utility environments. It’s hands-on, technically challenging, and built to scale, not legacy maintenance or minor tweaks. What’s in it for you Opportunity to build a brand-new enterprise...

Hybrid
7 hours ago
Tetra Tech
Southampton

You will help shape and deliver our geospatial strategy, define best practices, mentor colleagues, lead new initiatives and directly contribute to our global success. If youre passionate about GIS, AI, and Machine Learning, thrive in dynamic teams and want to make a real-world impact with geospatial technology, we want to hear from you.

an hour ago
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Hunter Selection
Southampton SO14
£55,000 – £65,000

You will be building new systems, using C#, . Net, Azure Functions, Restful APIs, CI/CD pipelines, React, SQL.

You should be someone that follows best practice and standards such as SOLID, KISS, DRY. This is a Mid to senior level role, and you will need to mentor junior developers.

7 hours ago
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QWARE
Southampton

Department: Support Reports To: Application Software Support Manager Location: Remote Salary: £55k - £60k /yr (depending on experience) Contract Type: Permanent – Full Time Role Summary We're looking for an experienced full-stack .NET developer to join our team in a new and exciting role. This role will initially be supporting an array of clients, helping our support team to continue to...

an hour ago
Spark Travel
Southampton

🚀 About Webigence and Spark Travel Webigence has 25 years of experience crafting UX‑first, often highly complex software. Our engineers pair forward‑thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is anything but. Alongside a handful of long‑standing third‑party clients, we’re scaling our own SaaS...

5 days ago
ERM
Southampton

Biodiversity Net Gain Consultant – ERM Location: Hybrid – suitable for any of our 16 UK offices. Overview ERM, the world's largest pure‐play sustainability consultancy, is hiring an experienced Senior Ecologist with a robust background in Biodiversity Net Gain (BNG) assessments within the UK. This role is primarily desk‐based and involves supporting our wider UK team in delivering BNG...

Hybrid
a day ago
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Primis
Southampton

Principal Software Engineer .NET £90,000-£110,000 Remote (UK) Do you thrive on building scalable solutions that power commerce worldwide? We're partnering with a rapidly expanding global payment platform fresh off a transformative acquisition. They're engineering a robust, merchant-centric ecosystem built on quality, resilience, and scale - and they need exceptional .NET Software Engineers to...

7 hours ago
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Shaw Daniels Solutions
Southampton

You will be responsible for designing, developing and implementing solutions using the MS Integration Services & MS Power Platform suite including but not limited to Logic Apps, Service Bus, Event Grid, APIM, Functions & Function Apps, SQL Server, Azure SQL, Dataverse, D365 modules, 3rd-party APIs, Azure Synapse, Fabric and Key Vault.

7 hours ago
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Sopra Steria
Southampton
£26,000

Are you looking for an opportunity to develop your systems administration skills in a role that will support your growth and help fulfil your ambition? Then we have just the opportunity for you! As our new Systems Engineer, youll play a key part in making sure our systems continue to work as they should. That means regression testing tools, checking the data flowing in and out, reviewing...

Hybrid
an hour ago
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Selwood Limited
Eastleigh
£55,000 – £65,000

Our Business Workdry International is a market-leading provider of engineered solutions for the handling and treatment of water and wastewater. Our Selwood, Siltbuster, Vanderkamp and Holland Pump business combined form a UK, European and US leader in pumping solutions, on-site water treatment, wet waste processing and the prevention of waterborne pollution, delivering an unrivalled range of...

Remote
7 hours ago
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Euroflorist
Southampton

This is an exciting opportunity to manage the newest brand in Euroflorist. We are looking for an experienced E-commerce manager, who will drive the performance and strategy of our newest brand. The right candidate is data driven, a self-starter and looking to make a big impact. The goal of this commercial role is to increase Online volume and GP for one of our newest brands, ensuring a high...

Remote
4 days ago
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Octagon
Southampton

Job Description Job Title: Software Development Engineer Salary: Up to £75k Job Type: Full Time, Permanent Location: Fareham, Hampshire (Hybrid working available) About the Opportunity: A UK-based technology organisation in Fareham is seeking a Software Development Engineer to support the development of software used within government, defence and law-enforcement environments. This role...

Hybrid
2 days ago
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Quilter
Southampton

You will gain hands-on learning through structured mentoring, guided practice, and access to formal development opportunities-including support toward CIPS qualifications where appropriate. Key responsibilities: - Deliver light-touch sourcing activity, including competitive quotes and proposal evaluations, supporting negotiations to achieve value, quality, and risk control.

No Experience
a day ago
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Innovo Global Talent
Southampton

Overview We are seeking an experienced Software Technical Lead to provide hands-on technical leadership within an automation and intralogistics environment. This role is ideal for a senior engineer who actively writes and reviews code, has managed and supported other developers, and can lead the technical delivery of complex software solutions, including Warehouse Management Systems (WMS). This...

4 days ago
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Cyberteam
Southampton

Account Manager – Cyber Security Solutions On behalf of a fast‑growing Cyber Security Solutions provider that helps organisations protect their digital assets and stay ahead of evolving threats, we are seeking a proactive and relationship‑driven Account Manager to nurture and grow a portfolio of mid‑market and enterprise clients. This role blends strategic account development with targeted new...

Hybrid
4 days ago
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MRJ Recruitment
Southampton

You will design and build APIs that enable products, partners and AI services to work together, including: Building RESTful APIs using C# .

You will likely bring: Strong experience building backend services in C# .

4 days ago
Keepnet
Southampton

You will own the engineering vision and execution of Keepnet’s core platform, operating across the UK, EU, US, UAE, and Canada, supported by distributed offshore and nearshore teams.

You will not be expected to do everything yourself. Success in this role will be measured by platform reliability, delivery predictability, team health, and customer impact.

Hybrid
2 days ago
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