826 to 850 of 912 Full Stack Engineer Jobs

Software Engineer - London £80k base + meaningful EMI equity About Revax Revax is building a new class of AI-native software for tax advisory teams. Today, advisers lose entire days to researching and drafting advice - fragmented knowledge, manual workflows, and brittle tooling. We turn a firm … expertise into structured, transparent AI systems that draft, analyse, and explain deliverables with full traceability. We're a seed-stage startup backed by leading institutions and angels, already working with major firms. The team is small, technical, and shipping fast. The role We're hiring a Software Engineer ...

Lead AI Engineer (AI Foundations, LLM Customization and Finetuning) Overview At Capital One, we are creating responsible and reliable AI systems, changing banking for good. For years, Capital One has been an industry leader in using machine learning to create real-time, personalized customer experiences. Our investments … software components including foundation model training, large language model inference, similarity search, guardrails, model evaluation, experimentation, governance, and observability, etc. Leverage a broad stack of Open Source and SaaS AI technologies such as AWS Ultraclusters, Huggingface, VectorDBs, Nemo Guardrails, PyTorch, and more. Invent and introduce state ...

Lead AI Engineer (AI Foundations, LLM Customization and Finetuning) Overview At Capital One, we are creating responsible and reliable AI systems, changing banking for good. For years, Capital One has been an industry leader in using machine learning to create real-time, personalized customer experiences. Our investments … software components including foundation model training, large language model inference, similarity search, guardrails, model evaluation, experimentation, governance, and observability, etc. Leverage a broad stack of Open Source and SaaS AI technologies such as AWS Ultraclusters, Huggingface, VectorDBs, Nemo Guardrails, PyTorch, and more. Invent and introduce state ...

grade chips and silicon building blocks, we employ a software team with a wide range of skills. Our software engineers work across the full software stack, from firmware and toolchains that interact directly with hardware to cloud‐based infrastructure that tests our products at scale. This ...

Lead AI Engineer (AI Foundations, LLM Core and Agentic AI) Overview At Capital One, we are creating responsible and reliable AI systems, changing banking for good. For years, Capital One has been an industry leader in using machine learning to create real-time, personalized customer experiences. Our investments … software components including foundation model training, large language model inference, similarity search, guardrails, model evaluation, experimentation, governance, and observability, etc. Leverage a broad stack of Open Source and SaaS AI technologies such as AWS Ultraclusters, Huggingface, VectorDBs, Nemo Guardrails, PyTorch, and more. Invent and introduce state ...

Title: Software Engineer Manchester, UK Hybrid (once/week) 6month contract with Potential Extension Day rate - 56GBP/Hour Inside IR35 Software Engineer We are looking for a mid-level Software Engineer who builds with a "Full-Ownership" mindset. In this role … Build & Refactor: Write reusable code using standard design patterns. We value test automation as much as production code. Own the Stack: Manage services end-to-end, monitoring health metrics and automating deployments via CI/CD. Design & Advise: Evaluate architectural trade-offs (cost/performance) and guide product ...

Senior Firmware Engineer | Cambridge | £80-90k DOE My client is looking for an experienced Firmware Engineer to join a small, high-impact signal processing team. You will take ownership of the full embedded firmware stack, from initial investigation through to integration ...

Engineer – Agentic Systems/Applied AI 🚀 ✨ Backed Series A FinTech | Proven, repeat founders ✨ 📍 London, in office full time 💸 £100k – £200k base (level dependent) 💲 ~$160k equity vested over 4 years 💗 Extras: onsite chef, barber, breakfast, gym membership I’m partnering with a high-growth, AI-native fintech … comes early ⚡ Decisions happen quickly 🧠 Strong engineers thrive What you’ll be doing: You’ll take responsibility for key parts of the AI stack, including: Architecting and deploying multi-agent systems Building scalable RAG pipelines and retrieval systems Creating evaluation frameworks (performance, safety, reliability) Shipping AI-driven products ...

Product Engineer (Windows) We’re hiring a Product Engineer who’s passionate about Windows and building high-quality desktop apps in a fast-paced, product-driven environment. What you’ll be doing: Own end-to-end development of user-facing features on Windows Take full ownership of the Windows experience, continuously improving usability and performance Optimise application speed, scalability, and reliability Work across the stack (React, TypeScript, Node.js + Windows integrations) Build and enhance desktop applications (Electron experience highly beneficial) Collaborate closely with product, design, and engineering teams Engage with users ...

Description SC Cleared Cloud Infrastructure Engineer Location: London (Hybrid) Start Date: ASAP Duration: 7 - 12 months IR35: Inside (via Umbrella Company) Key tasks for the Cloud Infrastructure Engineer to include:Leading financial house are seeking a seasoned SC Cleared Cloud Infrastructure Engineer to join … existing team where you will with the ongoing improvement of their technology stack, ranging from complex cloud-hosted applications utilizing IaC and full CI/CD automation, to more traditional VM-based on-premise systems. Cloud Infrastructure Engineer Technical Skills: • SC Clearance/Security ...

Lead AI Engineer (Gen AI Platform Services) Overview At Capital One, we are creating responsible and reliable AI systems, changing banking for good. For years, Capital One has been an industry leader in using machine learning to create real-time, personalized customer experiences. Our investments in technology infrastructure … software components including foundation model training, large language model inference, similarity search, guardrails, model evaluation, experimentation, governance, and observability, etc. Leverage a broad stack of Open Source and SaaS AI technologies such as AWS Ultraclusters, Huggingface, VectorDBs, Nemo Guardrails, PyTorch, and more. Invent and introduce state ...

Senior Software Engineer - Malvern YT Tech is representing a market-leading Security Technology firm in Malvern currently scaling its R&D team. We are looking for a Senior Software Engineer to take technical ownership of a business-critical product codebase within a multidisciplinary environment. This … high-impact role for an engineer who enjoys working at the intersection of software, physics, and hardware. They are looking for strong experience in Python & C++. The Role Technical Ownership: Lead software architecture across Windows and Linux platforms. Complex Systems: Manage codebases integrating hardware, sensors, vision, and AI. ...

Senior Software Engineer Location: London (Hybrid/On-site) Salary: £100,000 – £150,000 + equity About the Company We’re working with an early-stage, venture-backed legal technology startup on a mission to transform one of the UK’s most broken consumer experiences: the legal process … manual workflows. The company is building the UK’s first AI-native law firm , starting with property transactions and scaling towards a full-service, AI-first legal platform with global ambitions. The business is backed by a leading early-stage VC fund and experienced angel investors ...

Software Engineer - Up to £160,000 - London Title : Software Engineer Company : AI Startup Location : London Pay : Up to £160,000 Additional : Very strong stock options Company : A recently funded AI start up, spun out from an elite academic institution are looking to grow their software engineering … physical world. Role : This is a heavily backend-biased position but given the size of the team you will be working across the stack when needed Build scalable, performant systems Design and deliver end-to-end features with direct impact on customer value Work with product ...

award-winning and fast-growing SaaS technology company is looking for a Senior Software Engineer to help scale and evolve its enterprise platform used by leading professional services organisations globally including top 4 and top 10 consultancies. The business has experienced significant growth and is going through … expansion, with the addition of new teams being created to join their existing teams of specialist Engineers. The Role As a Senior Software Engineer, youll play a key role in designing, building, and improving scalable software solutions across a large and evolving platform. Working closely with product managers ...

Tech are working on behalf of our key client in Bistol on a new front end software engineer position. This company is redefining the world of motion control. Their technology sits at the intersection of fluid mechanics, high-speed electronics, and additive manufacturing, delivering next-generation solutions … aerospace, automotive, and industrial sectors. As a Frontend Software Engineer, you will join a high-energy, multi-disciplinary team where you will take full ownership of the frontend ecosystem, from implementation quality to design consistency. They are looking for someone who is action-orientated and thrives ...

Design of scalable and reusable integration layers, interoperability with multiple systems (internal & external), data platforms and downstream applications Methodologies: Agile/Scrum environments, full lifecycle involvement (design, build, evolve), technical documentation and governance 🏆 Engagement conditions: Contractor/Freelance agreement Full-time assignment Start date: ASAP Location … Integration expert with a strong architectural mindset, 🔹 Solid experience designing and implementing REST and legacy integrations, 🔹 Strong background in .NET Core and Microsoft Stack 🔹 Structured, rigorous 🔹 Excellent communication skills with technical stakeholders, 🔹 Comfortable working mainly with technical teams in a transverse role, 🔎 Interested in learning more? We look ...

Senior Application Security Engineer Central Manchester (3 days in-office) Up to £95,000 + Generous benefits We’re partnering with a high-growth SaaS fintech that’s looking to hire a Senior Application Security Engineer to join their expanding team. This is a genuinely impactful … doing: Embedding security into cloud-native architectures across AWS, Azure and/or GCP Driving secure-by-design principles across the full SDLC Designing and securing multi-tenant systems, including robust tenant isolation Working closely with engineering teams to influence architecture and design decisions Securing modern AI/ ...

seeking a Senior Verification Engineer to join a rapidly growing HW Team in Cambridge. You will get the opportunity to work on cutting edge technology and in the area of quantum computing. No prior experience in quantum computing? No problem. You'll learn as you go while working … alongside world-class engineers in a truly cross-disciplinary environment. About the role As a Senior Verification Engineer , you’ll take full ownership of functional verification across their hardware systems. You’ll collaborate with a talented team of hardware designers and embedded software engineers to deliver ...

Senior ML/MLOps Engineer (MLflow) | Databricks | Azure) About Optima Partners We’re an advanced data & business consultancy helping major consumer brands transform through data-driven customer strategy, design, and engineering. Our clients include leading UK and global brands across financial services, retail, and more. Join a practitioner … fast-growing team delivering ML systems that actually make it into production. We’re growing our engineering team and looking for an MLOps Engineer who loves building real, production grade ML systems not just proof‐of‐concepts. If you enjoy working across the full ML lifecycle ...

Principal Software Engineer - C++ Robotics System London, United Kingdom | Posted on 21/04/2026 About the Company At sees.ai, we’ve built a system that enables unmanned aerial systems to carry out inspections of critical national infrastructure, making these missions repeatable, scalable, and commercially viable … complex, integrated system already deployed and working in the field, solving real operational problems. Overview Principal Robotics/C++ Software Engineer – London (Hybrid) Define how a complex, real-world system scales — technically and organisationally. Now, following a major contract with National Grid and recent investment, we’re entering ...

Hands-on commissioning engineer to bring smart building systems to life across data centres, healthcare estates, and critical commercial environments. BMS, AV, IT, lighting, energy — the full integrated stack, from configuration through to client handover. This role suits an engineer with strong … sequence-of-operations Strong analytical, troubleshooting, and problem-solving skills Confident communicator, able to work independently or as part of a team Full driving licence and willingness to travel to project sites Desirable Experience with Siemens, Schneider, Tridium, or similar platforms Knowledge of cybersecurity considerations for connected building ...

Senior AI/ML Engineer (LLMs & Agentic AI) Belfast/Hybrid £DOE plus bonus and fantastic benefits We’re partnering with a fast-growing technology company operating at the intersection of AI and large-scale data. They are building next-generation AI systems that help transform vast amounts … unstructured information into actionable insights in real time. This is an opportunity for an experienced Machine Learning Engineer to work on production-grade AI systems leveraging Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), and agentic AI frameworks. What You’ll Be Doing Design and deploy AI/ ...

Founding Software Engineer | Cybersecurity Start-Up | London Help build the future of cybersecurity from day one. Founding Software Engineer required for an early-stage cybersecurity start-up on a mission to transform how organisations secure their data and infrastructure. Built by a founding team with … product and the culture. What you’ll do Play a key role in designing and building core systems from scratch Work across the stack to solve complex, high-impact security challenges Collaborate directly with the founders on product direction and technical strategy Take real ownership - your decisions will ...

SThree are pleased to announce we’re recruiting for a talented Lead Cyber Security Engineer to join & guide our excellent team based in our fantastic office space located in either Glasgow or London. The Cyber Security Engineering Lead acts as the technical authority across all domains of cloud … endpoint security, taking full ownership of hardening, automation, and threat mitigation. The role is not managerial in the traditional sense it exists to drive technical capability, mentor through engineering leadership, and deliver resilient, scalable defences. This role is hands-on, outcome-focused, and instrumental in building, automating ...