SeniorSoftwareEngineer Node.js/AWS/React London (Hybrid, 3 days onsite) Are you the kind of SeniorSoftwareEngineer who enjoys taking something fast-and-scrappy and turning it into something scalable, elegant, and genuinely robust? This is a chance for a SeniorSoftwareEngineer to join a small … based in the London City Centre thats building products to make sense of massive data streams. Youll be part of a tight-knit team (around ten people total, five software engineers), working on a genuinely greenfield platform with a modern stack and zero legacy The focus now is on maturing the codebase re-architecting, refactoring, testing, and scaling. As … a SeniorSoftwareEngineer, youll play a key role in helping the team evolve from early-stage speed to long-term stability, with the freedom to influence both product direction and engineering quality What youll be doing: Building and scaling a Node.js application that sits at the core of the product Designing and implementing new features for More ❯
Working for an industry leading, high-growth SaaS business with some of the biggest brand names in the world as customers, the SeniorSoftwareEngineer will build innovative next-gen solutions that are at the forefront of the industry. In this role, the SeniorSoftwareEngineer will be given full autonomy, taking ownership from … backend systems (some frontend too, if you like). This area is the future of the company (and the industry!) and as such has strong investment and visibility. The SeniorSoftwareEngineer will be responsible for leading the design, build and deployment of industry leading software solutions. You’ll work in collaboration with product, design and … the wider engineering team to improve and scale existing features, as well as build brand new ones. The SeniorSoftwareEngineer will have: • Strong backend or full-stack software development experience • Strong coding experience in either Java, Golang (Go), Python or Scala – multiple would be even better! • Experience with cloud platforms e.g. AWS, Azure, GCP - Google More ❯
london (city of london), south east england, united kingdom
RedCat Digital
Working for an industry leading, high-growth SaaS business with some of the biggest brand names in the world as customers, the SeniorSoftwareEngineer will build innovative next-gen solutions that are at the forefront of the industry. In this role, the SeniorSoftwareEngineer will be given full autonomy, taking ownership from … backend systems (some frontend too, if you like). This area is the future of the company (and the industry!) and as such has strong investment and visibility. The SeniorSoftwareEngineer will be responsible for leading the design, build and deployment of industry leading software solutions. You’ll work in collaboration with product, design and … the wider engineering team to improve and scale existing features, as well as build brand new ones. The SeniorSoftwareEngineer will have: • Strong backend or full-stack software development experience • Strong coding experience in either Java, Golang (Go), Python or Scala – multiple would be even better! • Experience with cloud platforms e.g. AWS, Azure, GCP - Google More ❯
SeniorSoftwareEngineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £110,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a SeniorSoftwareEngineer with extensive knowledge of building distributed systems? Looking to join a company who are solving genuine problems … a real impact on projects? If so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative SeniorSoftware Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world leading Cloud platform, the … to build out state-of-the-art, Greenfield code which can focus on being the worlds most accountable and sustainable cloud provider🌳 What they're looking for in a SeniorSoftwareEngineer: Tech agnostic but preferable experience working with Golang, Rust, C/C++ or Java. In-depth knowledge of distributed systems, building solutions at scale where More ❯
london (city of london), south east england, united kingdom
Burns Sheehan
SeniorSoftwareEngineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £110,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a SeniorSoftwareEngineer with extensive knowledge of building distributed systems? Looking to join a company who are solving genuine problems … a real impact on projects? If so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative SeniorSoftware Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world leading Cloud platform, the … to build out state-of-the-art, Greenfield code which can focus on being the worlds most accountable and sustainable cloud provider🌳 What they're looking for in a SeniorSoftwareEngineer: Tech agnostic but preferable experience working with Golang, Rust, C/C++ or Java. In-depth knowledge of distributed systems, building solutions at scale where More ❯
SeniorSoftwareEngineer/Developer (C# .Net) London onsite to £150k Are you an experienced C#, backend focussed SoftwareEngineer? You could be progressing your career in a senior, hands-on role at a global Asset Manager with c$3 million under management. As a SeniorSoftwareEngineer within the trading … You are collaborative with excellent communication and stakeholder management skills You are degree educated in Computer Science or similar technical discipline What's in it for you: As a SeniorSoftwareEngineer/Developer you will receive a competitive package: Salary to £150k Bonus paid every six months based on personal performance (10-25%) Professional development Pension … Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Apply now to find out more about this SeniorSoftwareEngineer/Developer (C# .Net) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Client Server
SeniorSoftwareEngineer (TypeScript Full Stack) London/WFH to £100k Do you enjoy problem solving and working with a range of technologies including functional programming languages such as Elixir, using the right tool for the job? You could be progressing your career in a senior, hands-on SoftwareEngineer role at a successful … office per week) Vitality Healthcare Continuous career development and learning opportunities Influential role as part of a small, close knit team Complex and interesting work Your role: As a SeniorSoftwareEngineer you will take ownership, working on technically challenging Greenfield development projects. You'll be working on complex problems with scalability and reliability in mind, across … educated in Computer Science or similar STEM discipline, having achieved a 2.1 or above from a Russel Group/Oxbridge or top 100 global university You are an experienced softwareengineer with a strong knowledge of best practices and Computer Science fundamentals and experience of delivering complex, data centric software You have advanced analytical and problem solving More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Harrington Starr
SeniorSoftwareEngineer Key Technologies: C#, .NET, React, AWS, Docker, Kubernetes City of London, United Kingdom Perm Role: £80,000 - £120,000 Harrington Starr has partnered with a Global Financial Services Vendor and they are looking for a Senior C#, .NET SoftwareEngineer to join their growing team! This role provides the perfect opportunity … communication skills. Unrestricted right to work in the UK. This role offers hybrid working, with an office location based in the City of London. This role will suit a SeniorSoftwareEngineer, with expert C#, .NET experience and commercial use of React having a direct impact from the get-go. Apply below and if you have any More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Harrington Starr
SeniorSoftwareEngineer Key Technologies: C#, .NET, React, AWS, Docker, Kubernetes City of London, United Kingdom Perm Role: £80,000 - £120,000 Harrington Starr has partnered with a Global Financial Services Vendor and they are looking for a Senior C#, .NET SoftwareEngineer to join their growing team! This role provides the perfect opportunity … communication skills. Unrestricted right to work in the UK. This role offers hybrid working, with an office location based in the City of London. This role will suit a SeniorSoftwareEngineer, with expert C#, .NET experience and commercial use of React having a direct impact from the get-go. Apply below and if you have any More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Capsa AI
At a Glance Capsa is an AI platform that accelerates due diligence and deepens insights for Private Equity funds. We are hiring seniorsoftware engineers who are comfortable contributing across all layers of the application and developing features end to end. Details: Role : SeniorSoftwareEngineer - Full Stack Location : London, UK (Hybrid, In-Person … defense companies like QinetiQ and retail tech startups such as Standard AI. The entire team consists of early-stage startup veterans passionate about building exceptional products. The Role A seniorsoftwareengineer at Capsa is expected to own projects and features from conception to production, working across the stack to deliver improvements to our AI platform. Key … vision and will have a direct impact on its success. Have the opportunity for fast career growth. Enjoy yourself! Apply if: You have 4+ years of experience as a softwareengineer in a venture backed startup or top tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Capsa AI
At a Glance Capsa is an AI platform that accelerates due diligence and deepens insights for Private Equity funds. We are hiring seniorsoftware engineers who are comfortable contributing across all layers of the application and developing features end to end. Details: Role : SeniorSoftwareEngineer - Full Stack Location : London, UK (Hybrid, In-Person … defense companies like QinetiQ and retail tech startups such as Standard AI. The entire team consists of early-stage startup veterans passionate about building exceptional products. The Role A seniorsoftwareengineer at Capsa is expected to own projects and features from conception to production, working across the stack to deliver improvements to our AI platform. Key … vision and will have a direct impact on its success. Have the opportunity for fast career growth. Enjoy yourself! Apply if: You have 4+ years of experience as a softwareengineer in a venture backed startup or top tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Tenth Revolution Group
About the Job SeniorSoftwareEngineer- Hybrid (2 days on site)- London- £100K+ Incredible Benefits Are you passionate about working with cutting-edge technology and looking to grow your skills in a forward-thinking environment? We’re currently looking for SeniorSoftware Engineers who enjoy being hands-on and thrive on solving complex technical challenges. … the personal insurance space. The venture combines the agility and innovation of a start-up with the stability and backing of a major UK financial services provider. As a SeniorSoftwareEngineer , you’ll collaborate closely with Product Owners, subject matter experts, and other team members to deliver high-quality outcomes through continuous development and release cycles. More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Tenth Revolution Group
About the Job SeniorSoftwareEngineer- Hybrid (2 days on site)- London- £100K+ Incredible Benefits Are you passionate about working with cutting-edge technology and looking to grow your skills in a forward-thinking environment? We’re currently looking for SeniorSoftware Engineers who enjoy being hands-on and thrive on solving complex technical challenges. … the personal insurance space. The venture combines the agility and innovation of a start-up with the stability and backing of a major UK financial services provider. As a SeniorSoftwareEngineer , you’ll collaborate closely with Product Owners, subject matter experts, and other team members to deliver high-quality outcomes through continuous development and release cycles. More ❯
Job Title: SeniorSoftwareEngineer Reporting to: Lead Engineer Role Purpose: As a SeniorSoftwareEngineer, you will enhance and support both new and existing products within the Software Engineering group. In addition to contributing to feature development, you will play a role in shaping the technology and process strategies, and occasionally … lead innovation or software design initiatives. Key Responsibilities: Develop new features with a strong focus on high-quality code. Conduct peer code reviews to ensure quality and adherence to best practices. Participate in daily stand-ups, change analysis sessions, and technical presentations. Provide guidance on tool and environment adoption where necessary. Continuously develop knowledge of the business domain and … proficiency in C# at a commercial level. Solid experience with .NET Core and related open-source technologies. Knowledge of Object Orientation, SOA, and relevant design patterns. Experience with modern software development practices, including agile methodologies , version control, code reviews, and continuous integration. Understanding of concurrency, asynchrony, and parallelism. Experience with Test Driven Development (TDD), unit testing frameworks, mocking frameworks More ❯
SeniorSoftwareEngineer II – ML Platform & GenAI (relocation to dubai) Location: Dubai, United Arab Emirates As part of the Machine Learning Platform & Generative AI Applications team, this role sits at the intersection of engineering, data science, and product development. The team builds the foundational tools that power intelligent and engaging user experiences across multiple business verticals. This … is an exciting opportunity for a SeniorSoftwareEngineer with expertise in GenAI and platform engineering to contribute as a hands-on technical leader. You will help shape the next generation of AI-driven services by building scalable infrastructure and driving innovative applications from concept to production. Key Responsibilities Design and implement scalable services, APIs, and workflows … Collaborate with cross-functional teams including product managers, designers, and data scientists to translate high-level ideas into executable engineering tasks. Qualifications & Requirements 7+ years of professional experience in software engineering with strong design principles and system architecture knowledge. Proficiency in programming languages such as Python, Java, Go, or similar. Experience working with Generative AI and ML infrastructure, including More ❯
london (city of london), south east england, united kingdom
oryxsearch.io
SeniorSoftwareEngineer II – ML Platform & GenAI (relocation to dubai) Location: Dubai, United Arab Emirates As part of the Machine Learning Platform & Generative AI Applications team, this role sits at the intersection of engineering, data science, and product development. The team builds the foundational tools that power intelligent and engaging user experiences across multiple business verticals. This … is an exciting opportunity for a SeniorSoftwareEngineer with expertise in GenAI and platform engineering to contribute as a hands-on technical leader. You will help shape the next generation of AI-driven services by building scalable infrastructure and driving innovative applications from concept to production. Key Responsibilities Design and implement scalable services, APIs, and workflows … Collaborate with cross-functional teams including product managers, designers, and data scientists to translate high-level ideas into executable engineering tasks. Qualifications & Requirements 7+ years of professional experience in software engineering with strong design principles and system architecture knowledge. Proficiency in programming languages such as Python, Java, Go, or similar. Experience working with Generative AI and ML infrastructure, including More ❯
SeniorSoftwareEngineer Location: London 1x a month Salary: £75,000 - £95,000 + equity + benefits An established, global technology business within the hospitality-tech industry is seeking a talented Backend SoftwareEngineer to help build and scale cutting-edge digital solutions. This is a chance to work on greenfield projects - building new, scalable … the ground up. What will I be doing? Design, develop, test, and maintain high-performance backend systems supporting real-time hospitality operations. Take ownership of key features throughout the software development lifecycle - from technical design through to deployment and ongoing optimisation. Collaborate with cross-functional teams including product, design, and data science to deliver innovative, customer-focused solutions. Work … reviews, mentoring, and knowledge sharing to maintain engineering excellence. What do I need to be successful: Degree in Computer Science or equivalent industry experience. 3+ years' experience in backend software development within a fast-paced, agile environment. Strong proficiency in Python (or similar modern backend language) and experience building RESTful APIs or microservices. Solid understanding of data structures, algorithms More ❯
City of London, London, United Kingdom Hybrid / WFH Options
GoodFit.io
B2B companies out there. In order to keep up with demand, and accelerate development of the platform, we are expanding our core engineering team. About the role: As a SeniorSoftwareEngineer at GoodFit, you'll be at the forefront of our technological innovation and product delivery. We're looking for someone who can navigate the fast … with pragmatism will be key to our success. You will: Be part of a small team, working in a fully remote-first environment, spanning Europe and UK As a seniorsoftwareengineer, own understanding of business problems, design, implementation and release of critical features across our stack Design and develop scalable, efficient solutions primarily using JavaScript/… and wider organisation Be comfortable in a rapidly changing startup environment We'd love to hear from you if you have: You have 5+ years of professional experience in software development, with a proven track record of delivering impactful projects You're highly proficient in JavaScript and TypeScript, with extensive experience in AWS services (e.g., Lambda, Step functions, AppRunner More ❯
Senior C++ SoftwareEngineer London Join a pioneering team developing advanced software for secure, high-performance communications. This is an opportunity to contribute to technology that supports public safety, defence, and government operations, working within an organisation that combines the innovation of a start-up with the stability of a globally established leader. You’ll play … QA, and Architecture. If you’re passionate about engineering excellence, security, and reliability, this is a genuinely impactful role. In this role, you’ll design, build, and maintain C++ software for mission-critical communication systems while integrating with third-party platforms such as Motorola DCS and CADI. You’ll collaborate closely with cross-functional teams to deliver scalable and … secure solutions that perform under pressure. Your work will also involve participating in architecture discussions, contributing to code reviews, implementing best practices, and ensuring the software meets performance, reliability, and security standards. You’ll have the freedom to innovate and the responsibility to deliver technology that has real-world impact. What's required for this Senior C++ SoftwareMore ❯
london (city of london), south east england, united kingdom
IC Resources
Senior C++ SoftwareEngineer London Join a pioneering team developing advanced software for secure, high-performance communications. This is an opportunity to contribute to technology that supports public safety, defence, and government operations, working within an organisation that combines the innovation of a start-up with the stability of a globally established leader. You’ll play … QA, and Architecture. If you’re passionate about engineering excellence, security, and reliability, this is a genuinely impactful role. In this role, you’ll design, build, and maintain C++ software for mission-critical communication systems while integrating with third-party platforms such as Motorola DCS and CADI. You’ll collaborate closely with cross-functional teams to deliver scalable and … secure solutions that perform under pressure. Your work will also involve participating in architecture discussions, contributing to code reviews, implementing best practices, and ensuring the software meets performance, reliability, and security standards. You’ll have the freedom to innovate and the responsibility to deliver technology that has real-world impact. What's required for this Senior C++ SoftwareMore ❯
City of London, London, United Kingdom Hybrid / WFH Options
Wilson Brown
SeniorSoftwareEngineer - Backend & Data | Fully Remote (UK) Founding Engineer | Python | GCP | Terraform | Event-Based Systems | Data Pipelines An innovative, mission-driven LegalTech SaaS start-up is looking for a Senior Product Engineer (Backend & Data) with deep experience in Python, Product development, and Data engineering. Role Information: Salary : Up to £100,000 (DOE) + … strong Product mindset to every decision. This role is ideal for someone who thrives on turning early-stage ideas into scalable, market-ready Products backed by solid Data pipelines. Senior Product Engineer - Highlights: Enhance and scale backend services in Python Architect event-driven solutions in GCP with Pub/Sub & Cloud Run Build and optimise Python code for More ❯
SeniorSoftware Developer London – Twice a week in the office £70,000-£90,000 C#/Python/Azure I’m currently working for a well-established tech consultancy business of over 70 years who are based in Central London and looking for a SeniorSoftware Developer , paying up to £90,000 and requiring office working More ❯
london (city of london), south east england, united kingdom
Premier Group
SeniorSoftware Developer London – Twice a week in the office £70,000-£90,000 C#/Python/Azure I’m currently working for a well-established tech consultancy business of over 70 years who are based in Central London and looking for a SeniorSoftware Developer , paying up to £90,000 and requiring office working More ❯
Senior C++ Software Developer, Python - Financial/Banking Candidates will have 5+ years C++ experience (ideally more) and excellent knowledge of Python - ideally coming from a Financial/Banking background with knowledge of Equities, Futures & Options and Fixed Income and Exchange Connectivity with some Low Latency experience. Job Overview You will work with the Product, Infrastructure and QA … teams, to produce high performance, low latency and highly reliable code. Your goal will be to develop software which handle large amount of TPS to drive a highly efficient technology used by several markets around the world. To be successful in this role as a SeniorSoftwareEngineer C++, you will be a proponent of agile … methodology and modern software best practices. You can produce detailed technical work in OOP and work with other members of the Development team to produce code of high-quality standards. Ideally, you should have worked in critical systems development in the past. Responsibilities and Duties • Codes, tests, integrates, and documents software. • Provides technical leadership to more junior employees and More ❯
SeniorSoftwareEngineer - London - £120k Please note - this role will require you to work from the London based office three days per week. You must have the unrestricted right to work in the UK to be eligible for this role - this organisation is not able to offer sponsorship. Are you passionate about building cutting-edge technology solutions … building out our new front-end analytics platform, delivering intuitive, high-performance tools that empower users with real-time insights and advanced visualization capabilities. Collaborate with commercial teams to engineer and optimize processes and analytical models. Build and maintain Python-based services and APIs using modern frameworks and best practices. Develop solutions for data modeling, market analysis, and position More ❯
