426 to 450 of 1,329 Permanent Senior Software Engineer Jobs

Senior AI Software Engineer / AI Model Specialist

Location
Greater London, England, United Kingdom
Type: Full-Time About MAXTRAMAX MAXTRAMAX delivers innovative technology solutions that help organizations improve efficiency, security, and operational performance. Our expertise spans Artificial Intelligence, Software Development, Digital Transformation, Network Infrastructure, Cybersecurity, and Defense & Security Technology. We are expanding our AI capabilities and are seeking an experienced AI Software Engineer to help design, develop, train, and deploy advanced AI solutions for commercial, government, and security-focused applications. Position Overview We are looking for a highly skilled Senior AI Software Engineer/AI Model Specialist with deep expertise in artificial intelligence, machine learning, and modern ...

Senior Embedded Linux Software Engineer

Location
Greater London, England, United Kingdom
Join a global technology leader – Uxbridge, Hybrid Working Model A global technology company is expanding its UK development centre and is looking for a Senior Embedded Linux Software Engineer to take technical ownership of major software work packages across mission-critical satellite communication products. This … senior hands‐on role combining software architecture, C/C++ development and embedded Linux, with responsibility across the full product lifecycle. You’ll work closely with hardware, firmware and international engineering teams to develop highly reliable systems used across satellite communications and maritime safety applications. For this Senior ...

Senior Software Engineer, Git Systems

Location
United Kingdom
About GitHub GitHub is the world’s leading platform for agentic software development — powered by Copilot to build, scale, and deliver secure software. Over 180 million developers, including more than 90% of the Fortune 100 companies, use GitHub to collaborate, and more than 77,000 organisations have adopted GitHub … Copilot. Locations In this role you can work from Remote, United Kingdom Overview GitHub is seeking a Senior Software Engineer to join the Git Systems Engineering team, which runs the largest code-hosting platform in the world, part of our Platform and Infrastructure organization. Our group ...

Senior Software Engineer | FinTech Payments Platform

Location
Greater London, England, United Kingdom
Finastra, a global leader in financial services software, seeks a Senior Software Engineer to design, develop and deliver high-quality software for e-billing and payments platforms. This full-stack role requires strong Python expertise, collaboration, and the ability to tackle complex challenges ...

Senior Software Engineer (Node.js, TypeScript)

Location
Greater London, England, United Kingdom
Senior Software Engineer (Node.js, TypeScript) London, England, United Kingdom Here’s a summary of the role: Build software that matters, take real technical ownership, and use modern AI tooling to do your best work. This is a hands-on senior engineering role for someone … monitoring, incident response, testing, and development practices. These are the essential you’ll need to get an interview: 5 to 8 years of professional software engineering experience delivering production systems in an agile environment. Strong backend development skills with Node.js and TypeScript , including experience designing and building APIs ...

Senior Software Engineer, Onboarding

Location
Boston, England, United Kingdom
Senior Software Engineer, Onboarding Location: Remote, US About Toast Toast is driven by building the restaurant platform that helps restaurants adapt, take control, and get back to what they do best: building the businesses they love. Are you bready* for a change? A restaurant owner switching … other engineers through code review, pairing, and by sharing how you build with AI. Do you have the right ingredients*? (Requirements) 5+ years of software engineering experience building and operating production backend systems in Kotlin, Java, or another object-oriented language. Experience building on LLMs where the model takes ...

Senior Software Engineer C++

Hiring Organisation
REC SOLUTIONS LIMITED
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 115,000 Annual
Senior Software Engineer C++ (Python, SQL, Linux, Trading, FinTech, Financial Technology, Low Latency, Backend) This is a hybrid role, 3 days remote and 2 days in the office Our client actively encourages diversity, equality and inclusion within it's workforce and welcomes applications from a diverse background ...

Senior Software Engineer, Web Development – AI

Location
Manchester, England, United Kingdom
lead the industry. While we are well-positioned to help shape the future of television and streaming media worldwide, continued success stems from experienced software engineers like you developing core features for the Roku platform. Our new Senior Software Engineer will be contributing extensively … responsive web applications. To be successful you’ll need extensive experience of building reliable and scalable cloud-based solutions, a strong background in software engineering and an appetite to keep on top of modern software practices. This is a great role for a senior professional who enjoys ...

Senior Full-Stack Software Engineer UK Wide

Location
United Kingdom
About The Role We are looking for a Senior Software Engineer who will be responsible for designing, developing, and deploying high-quality software solutions. You will work on complex software projects, contributing to the architecture, development, and improvement of software systems. This role involves … mentoring junior engineers, collaborating with cross-functional teams, and driving the adoption of best practices in software development. We value adaptability over specific technology expertise. While we are technology-agnostic and expect you to be too, we will fully support your development with the necessary training to master ...

Senior AI Software Engineer / AI Model Specialist

Location
Greater London, England, United Kingdom
Type: Full-Time About MAXTRAMAX MAXTRAMAX delivers innovative technology solutions that help organizations improve efficiency, security, and operational performance. Our expertise spans Artificial Intelligence, Software Development, Digital Transformation, Network Infrastructure, Cybersecurity, and Defense & Security Technology. We are expanding our AI capabilities and are seeking an experienced AI Software Engineer to help design, develop, train, and deploy advanced AI solutions for commercial, government, and security-focused applications. Position Overview We are looking for a highly skilled Senior AI Software Engineer/AI Model Specialist with deep expertise in artificial intelligence, machine learning, and modern ...

Senior Software Engineer - Backend & Distributed Systems Engineer

Location
Greater London, England, United Kingdom
market intelligence for financial institutions. We are moving towards a more real-time, event-driven and agent-driven architecture. We are looking for a Senior Software Engineer to help design and build the backend services, distributed systems and cloud infrastructure behind it. This is a hands … software engineering role with end‐to‐end production ownership. You will work directly with our founder and engineering team and have significant influence over how our next generation of technology is designed and built. What You’ll Do Build Production Backend Systems: Design, build and maintain reliable Python services ...

Senior Software Engineer

Hiring Organisation
Spectrum IT Recruitment Limited
Location
Southampton, Hampshire, United Kingdom
Employment Type
Permanent
Salary
GBP 65,000 Annual
Spectrum IT Recruitment is working with an innovative technology business at the forefront of 5G and wireless communications . They're looking for a Senior Software Engineer to join their software team in Southampton. This role would suit an experienced engineer whose main focus … C++ software development , particularly in multithreaded or high-performance systems click apply for full job details ...

Senior Software Engineer

Location
City of Westminster, England, United Kingdom
Finastra, we’re a global leader in financial services software, dedicated to expanding access to financial services and shaping what’s next for the industry. Our technology powers mission‐critical solutions across Lending, Payments and Universal Banking, supporting over 7,000 customers, including 80% of the world … banks, in more than 110 countries.As a Senior Software Engineer, you will play a key role in the design, development, and delivery of high-quality software solutions for our e-billing and payments platforms. This is a full-stack position that requires strong Python expertise ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
Opticore IT is a specialist Network Engineer and Project Management consultancy offering a wide variety of opportunities to work within fast-paced,challenging environments across our client base spanning multiple sectors including Finance, Broadcast Media, Telecommunications and more. Opticore IT are currently searching for a Senior Software Engineer who is operating at a high level within Software development, and well versed in designing & developing microservices within Python. This will be an initial 6 month contract (inside IR35) and working predominantly remotely with occasional travel to sites. Position Overview To lead the design and development ...

Senior Full Stack Software Engineer (AI SaaS)

Hiring Organisation
Staffworx Limited
Location
London, UK
Employment Type
Full-time
11421Location: London, England, GBType: PermanentSalary: USD to 100K + equity per yearPosted: 2026-06-17Senior Software Engineer (React, TypeScript, Node, Postgres, Redis)A well-backed core business systems tech scale-up based in Central London, building AI-powered workforce software for fast-growing businesses. Strong … product culture, lean team, and a genuine focus on solving real problems. The RoleTwo senior engineer positions available. You will work across a small, autonomous product squad with no dedicated product manager, engineers and designers share that responsibility collectively. Expect broad scope, high ownership and the ability ...

Senior Software Engineer, Control.

Hiring Organisation
Enterprise Recruitment Limited
Location
Stevenage, Hertfordshire, United Kingdom
Employment Type
Permanent
Salary
GBP 65,000 Annual
Senior Software Engineer position focusing on low-latency control systems, specifically multi-axis movement to search for and track satellites dynamically using feedback loops for deployment on embedded Linux or microcontrollers. The role offers significant autonomy across architecture and implementation, alongside complex challenges involving geometry, coordinate systems ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
Finastra, we’re a global leader in financial services software, dedicated to expanding access to financial services and shaping what’s next for the industry. Our technology powers mission-critical solutions across Lending, Payments and Universal Banking, supporting over 7,000 customers, including 80% of the world … banks, in more than 110 countries. As a Senior Software Engineer, you will play a key role in the design, development, and delivery of high-quality software solutions for our e-billing and payments platforms. This is a full-stack position that requires strong Python expertise ...

Senior Lead Software Engineer- Back-end Engineer - Chase UK

Location
Greater London, England, United Kingdom
building the bank of the future from the ground up, offering you the chance to join us and make a significant impact. As a Senior Lead Software Engineer at JPMorgan Chase within the International Consumer Bank, you will play a crucial role in this initiative, dedicated … leveraging the latest technologies and the best industry practices Use domain modelling techniques to allow us to build best in class business products. Structure software so that it is easy to understand, test and evolve. Build solutions that avoid single points of failure, using scalable architectural patterns. Develop secure ...

Senior Software Engineer - Platform

Hiring Organisation
Fruition Group
Location
South East, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
Senior Software Engineer Platform/Core Infrastructure London 4 days a week on site Up to £120k We're working with a London-based fintech that has scaled rapidly in a short space of time. Their platform now processes billions in annual transaction volume , operating across multiple ...

Senior Software Engineer

Location
Milton, Scotland, United Kingdom
Senior Software Engineer will play a key role in developing and maintaining our platform, working alongside a talented team to deliver innovative solutions. Jumbo Interactive Limited is a leading iGaming company with a focus on delivering engaging and secure online gaming experiences. Estimated Benefits Generous leave entitlements ...

Senior Software Engineer — Real-Time Martech Platform

Location
City of Edinburgh, Scotland, United Kingdom
POSITION Our roster has an opening with your name on it We're looking for a Senior Software Engineer to join one of our Core Marketing Platforms teams , where you'll build and optimize high-performance microservices that power FanDuel's marketing ecosystem. You'll work … existing systems simpler (e.g. by consolidating redundant systems, deleting unnecessary code, or removing/updating out of date documentation). Coaching and developing other software engineers' technical skills. Lead projects with a holistic view of the strategic direction of the vertical. Defining the architecture of the future, enabling ...

Senior Software Engineer - Digital Workplace

Location
Douglas, Northern Ireland, United Kingdom
Senior Software Engineer - Digital Workplace Home based - EMEA Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering … gain insights into the business and our talent pool, and use those insights to improve the experience of working at Canonical. As a Workplace Engineer at Canonical, you need an analytical, data-driven mind and a passion to connect and make sense of interesting data from APIs. We focus ...

Software Engineer, Senior

Location
Aberdeen City, Scotland, United Kingdom
empowers you to achieve your full potential. Unleash your talent and redefine what's possible. Job Description: Parsons is looking for an amazingly talented Senior Software Engineer to join our team! In this role you will get to analyze, design, and develop computer software required … Doing: Supports program and project implementation and makes significant contributions to department goals and planning efforts. Builds innovative, robust, and efficient software solutions as a major contributor to a team Plays a role in overall functional strategic planning Investigates and resolves defects related to the developed software systems. ...

Senior Software Engineer — Remote (UK) | Microservices & AI

Location
Greater London, England, United Kingdom
Centric Software is seeking a Senior Software Engineer to join our remote-friendly team. You will design, implement, and maintain scalable microservices with a strong emphasis on reactive programming and non-blocking architectures. Collaborate with product, DevOps, QA and other engineering teams to deliver reliable services ...

Senior Software Engineer (Developer Tooling)

Location
Belfast City District, Northern Ireland, United Kingdom
seeking a platform-minded software engineer to build and own the developer-facing tools that sit at the heart of how engineers integrate with Cloudsmith. About Cloudsmith Cloudsmith is building the operating system for the modern software supply chain. We run a global, fully managed, multi-tenant … SaaS platform that helps organizations, from startups to Fortune 500 companies, secure, govern, and distribute software artifacts at scale. Worldwide, our customers use Cloudsmith as a critical infrastructure control plane for CI/CD, developer workflows, security controls, compliance, and software distribution, supporting 30+ formats and ecosystems across ...