backend developer jobs in 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...

About Prighter Prighter is a fast-growing LegalTech company building productised services and SaaS solutions for compliance with data protection as well as AI & digital governance regulations. With the mission to enable companies around the world to comply with regulatory requirements for their digital business, our services and SaaS solutions guide our global clients through the increasingly...

Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS - Salary: £75k - £85k plus bonus - Location: Fully remote, (UK-based) - Sponsorship is not available for this role Prism Digital have partnered with a super interesting and niche VC-backed client specialising in attack surface management and automated red teaming. Their platform provides organisations with real-time...

Team: Backend Location: UK Remote Employment Type: Full-time and Permanent Remuneration (UK – Remote): £81–108k Base Salary + Discretionary Bonus + Equity We are a stealth-mode AI laboratory researching and developing Machine Learning models. The founding team consists of Cambridge graduates and former engineers at Google, Meta, Bloomberg, Microsoft and Amazon. We are backed by prominent...

Role Overview We are seeking an experienced Scala Developer to join a dynamic team working on high-impact projects. The ideal candidate will have strong expertise in Scala and Play Framework, with a passion for building robust, scalable backend services and APIs. This is a fully remote contract role with an immediate start. Key Responsibilities - Design, develop, and maintain backend services...

Company Description Imaginaire is a boutique ecommerce agency based in Nottingham, specialising in ecommerce design and development, SEO, and PPC services. Focused on Shopify and Shopify Plus platforms, we help brands across the UK create tailored, high-quality headless ecommerce solutions. The Role We’re looking for a mid-level/senior frontend developer to join our ecommerce delivery team...

.Net / Blazor Developer, Fully Remote, £60,000 - £85,000 per annum About the Role: Our client, a leading AI solutions consultancy are seeking a highly skilled Blazor Developer to join their team. As a Blazor Developer, you will play a critical role in creating and optimising web applications built on the Blazor framework. Your expertise in development will help their clients bring their...

🚀 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...

About Aero A digital experience company, we sit at the intersection of insights, creativity and technology, crafting digital experiences that transform business performance. We’re a small, fully remote team with big ambitions. We work hands-on with our clients, giving our teams genuine ownership of their work. Every project you touch will be seen by thousands of people and will directly...

Software Engineer – PHP & Golang Fully Remote – Within UK PHP / Golang / JavaScript £60,000-£65,000 I've recently partnered with a leading Prop-Tech business in London who are looking to add a Software Engineer to their team who specialises in PHP & Golang! The company have seen rapid success over the past 10 years and have built an advanced platform used by their expanding portfolio of...

React / Next.js Developer – Contract (Outside IR35) Location: Remote (UK-based preferred) Contract Length: 2 months Contract Type: Outside IR35 Rate: £300 per day Start: ASAP Overview We're looking for an experienced React / Next.js Developer to join us on a short-term contract to help deliver and enhance a modern, high-performance web application. You'll be working closely with product...

Frontend Software Engineer (React) – Fully Remote (UK) 💷 Up to £85,000 + Benefits 🌍 Fully Remote (UK) 🚀 High growth company – Great Future prospects Build modern user experiences for data driven technology used at scale A fantastic opportunity to join a growing international technology business building next generation software that automates and streamlines complex data workflows. The...

Job Description Who we are At MediaKind, we're reshaping the future of streaming video—and we're moving at incredible speed. Our cloud-native, agile technology enables customers to rapidly build, deploy, and scale premium streaming experiences, removing traditional barriers to innovation and growth. We’re on a mission to transform how the world watches video: making every moment extraordinary,...

Job Description Digital IC Design Lead Location: Fareham, Hampshire Salary: Up to £87,000 + bonus Contract: Permanent We're recruiting for a Digital IC Design Lead on behalf of a high-growth semiconductor organisation operating at the forefront of advanced electronics. This is a senior technical leadership role, offering the opportunity to shape next-generation digital ICs used in...

About Euphoric: Euphoric builds AI-first employee benefits administration software for the world’s largest and most prestigious employers. Born out of Peppy Health — a fast-growing, category-defining Series B startup — we spun out in May 2025 to tackle a far bigger opportunity. Global employers spend $3–5 trillion on benefits every year. It’s their second-largest cost after payroll — yet the...

Senior Software Engineer - .Net, Azure. - Contract Fully Remote | Contract Inside IR35 Only | 6 months with extension £750pd+ | Start ASAP Curated is partnering with a global SaaS scale-up undergoing a significant platform modernisation and growth phase. The business is scaling multiple engineering teams and is looking to bring in highly experienced contract Software Engineers to support...

Fully remote, 12-month contract. Who You’ll Work With You’ll work with the Client's team focused on our internal Firm GenAI initiatives. Our team is distributed across multiple locations, including offices in North America, Europe, and Latin America. The team is dedicated to advancing the capabilities and applications of Generative AI within our firm, driving innovation, and delivering...

Ciklum is looking for an Intelligent Automation Consultant to join our team full-time in the UK. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines...

Senior Golang Engineer - we are partnered with a stealth start-up company based out of London that are utilising AI to build the next generation of software. Golang Engineers will be highly skilled coding with Go and potentially have a background with other backend related languages too such as NodeJS or Python. Required: - 3+ years of relevant work experience working with Golang. - 5+ years of...

Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS - Salary: £75k - £85k plus bonus - Location: Fully remote, (UK-based) - Sponsorship is not available for this role Prism Digital have partnered with a super interesting and niche VC-backed client specialising in attack surface management and automated red teaming. Their platform provides organisations with real-time...