qa engineer backend

We're making energy fair, clean, and simple for all using technology. Octopus Energy started with a bold idea: to build Britain’s first truly digital energy supplier. By combining world-class tech with brilliant humans who care deeply about customers and driving the renewable energy transition, we made it happen and in 2025, we became Britain’s largest...

Backend Engineer (on-site/London) - up to £260k A high-growth blockchain infrastructure company is building the next generation of ultra-fast trading and digital asset platforms, and were looking for an exceptional Backend Engineer to join the London team onsite. If you thrive in high-performance environments, love tackling complex engineering...

TL;DR: We're looking for exceptional builders who help us design and ship the foundational infrastructure that lets Conduct scale to the world's largest enterprises, while accelerating the product teams building on top of it.Why ConductThe world's largest companies are slowed down by the software they run on. We’re building the AI operating system that...

Backend Engineer (3+ Years Experience) — Job Description Role: Backend Engineer Experience: 3+ Years Location: [Your Location / Remote / Hybrid] Employment Type: Full-time About the Role We are looking for a skilled Backend Engineer with 3+ years of experience building scalable, reliable, and high-performance backend systems. You will work closely with...

As a Backend Engineer, you will take real ownership of the systems that power a fast-growing LLM-native product. This is a hands-on role focused on building reliable, high-performance backend services while shaping the foundations of a small, senior engineering team.What You Will DoDesign and build scalable backend services and APIs supporting LLM-driven...

Backend Engineer - Java / Kotlin / Spring Boot London - Hybrid (1 day per week) Up to £100,000 + Share Options Unfortunately, sponsorship cannot be provided I'm working with a growing technology startup looking to hire a Backend Engineer to join its engineering team in London. They're looking for someone who is genuinely strong technically - not just...

Job DescriptionWe’re hiring a talented and experienced Backend Engineer to join an agile product development team working on modern web applications and scalable platforms. You’ll be responsible for building, maintaining, and optimising server-side logic and APIs, and contributing to full-stack solutions using JavaScript/TypeScript, Node.js, and...

Backend Engineer🌍 About OutpostWhat if going global was as simple as going local?Outpost is building the AI global trade engine. The accumulated knowledge of every rule you'd need to sell internationally, turned into infrastructure. Tell us what you're selling. We'll tell you how to sell it everywhere.We operate as Merchant of Record or Tax of Record...

Job description Backend Engineer (TypeScript, Node.js & AI) – Remote (UK or EU) We're hiring a Backend Engineer to join a growing FinTech business that is using technology to modernise and simplify complex financial processes for institutional and corporate clients. This is an opportunity to join a collaborative engineering team working on scalable,...

About The Company Opus Recruitment Solutions Ltd is a leading global recruitment agency specializing in technology, digital, and engineering sectors. With a strong commitment to connecting talented professionals with innovative organizations, Opus has built a reputation for delivering tailored staffing solutions that drive business success. Our extensive...

DescriptionSeedLegals is the leading provider of automated legal solutions for startups, with offices in London, New York and Paris. Since launching in 2016, we’ve supported over 75,000 startups who have collectively raised more than £2bn on our platform.We’re a Series A company backed by Index Ventures, on a mission to make entrepreneurship more...

About 9fin9fin is the AI platform powering global debt markets — the world’s largest asset class at over $145 trillion.Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis,...

Who We Are Lightning AI is the company behind PyTorch Lightning. Founded in 2019, we build an end-to-end platform for developing, training, and deploying AI systems—designed to take ideas from research to production with less friction. Through our merger with Voltage Park, a neocloud and AI Factory, Lightning AI combines developer-first software with...

QA Engineer An established global organisation with a strong presence across financial markets and technology is continuing to invest in its Belfast technology function and is currently seeking an experienced QA Engineer to join its Agile engineering team. This is an excellent opportunity for a senior QA Engineer with strong automation expertise to play a...

Position: QA Engineer Location: Bristol Start Date: Immediate Duration: 2-3 months Hours: 38-45hrs/week + weekend overtime LTD Pay Rates: £33-38.00/hr The Role: Integrate Engineering Resources are currently recruiting for QA Inspectors with Radiography Interpretation experience for an industrial site near Bristol. Immediate starts are available,...

DescriptionWe are looking for a SDET to join our growing engineering organisation developing a wide range of market leading InsurTech solutions. You will join us at an exciting time as we focus increasingly on cloud/SaaS solutions, upgrading existing products to new technologies and modern UX, as well as developing brand-new applications. The SDET role is...

Hadean is a deep-tech company building cutting-edge distributed computing technology that powers scalable, secure, and interoperable digital environments. Our platform enables real-time simulation and training, mission rehearsal, command & control and digital twin capabilities - transforming the way defence, government agencies and enterprises plan, train,...

Position: QA Engineer Location: Immingham Start Date: Immediate Duration: 2-3 months Hours: 38-45hrs/week + weekend overtime LTD Pay Rates: £33-38.00/hr The Role: Integrate Engineering Resources are currently recruiting for QA Inspectors with Radiography Interpretation experience for an industrial site near Immingham. Immediate starts are available,...

About this Position: We are currently recruiting for a QA Engineer to support an ongoing industrial project. This is a long-term contract role offering consistent hours, overtime opportunities, and weekend work on a rotational basis. The role will be site-based, overseeing the quality and compliance of electrical installation works within an industrial...

Waracle are looking for a Mid Level QA Engineer for an exciting new role joining our world-class digital technology consultancy and home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation. We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients...