1,351 to 1,375 of 1,792 Software Engineer Jobs in London

Senior Software Developer - Ruby 12-Month Contract Inside IR35 Role Details Location: London or Manchester (2 days/week onsite + monthly team rotation) Duration: 12 months Clearance: BPSS to start; active SC required due to timescale of the project Team: 10 direct reports, part of a 60+ programme Experience: 4+ years Essential Skills Technical: Strong Ruby development (primary More ❯

Senior Software Developer - Ruby 12-Month Contract Inside IR35 Role Details Location: London or Manchester (2 days/week onsite + monthly team rotation) Duration: 12 months Clearance: BPSS to start; active SC required due to timescale of the project Team: 10 direct reports, part of a 60+ programme Experience: 4+ years Essential Skills Technical: Strong Ruby development (primary More ❯

We are seeking a Principal Engineer/Engineering Manager to lead one of the core engineering teams within Planning Agent , our AI-powered advertising planning platform used daily by IPG agency teams. You will help shape and grow a product with AI at its core, using agents to power an AI assistant advertising planners throughout their workflow. Youll lead … mentoring, and driving delivery. In all cases, youll conduct code reviews, contribute to high-impact features, and foster a high-performance engineering culture. This position reports to the VP, Software Engineering, Planning. It will be primarily remote, though you are also welcome to work in our London office. Key Responsibilities: Shape the architecture and engineering design of the product … Proven experience as a senior technical leader in an Agile/Scrum environment Strong knowledge of Python and microservice architectures Experience building web applications, preferably including React Familiar with software development methodologies, scaled system design, and best practices Knowledge of AWS and cloud-native architectures; familiarity with LangGraph a plus Strong communication skills, able to explain technical problems clearly More ❯

We are seeking a Principal Engineer/Engineering Manager to lead one of the core engineering teams within Planning Agent , our AI-powered advertising planning platform used daily by IPG agency teams. You will help shape and grow a product with AI at its core, using agents to power an AI assistant advertising planners throughout their workflow. Youll lead … mentoring, and driving delivery. In all cases, youll conduct code reviews, contribute to high-impact features, and foster a high-performance engineering culture. This position reports to the VP, Software Engineering, Planning. It will be primarily remote, though you are also welcome to work in our London office. Key Responsibilities: Shape the architecture and engineering design of the product … Proven experience as a senior technical leader in an Agile/Scrum environment Strong knowledge of Python and microservice architectures Experience building web applications, preferably including React Familiar with software development methodologies, scaled system design, and best practices Knowledge of AWS and cloud-native architectures; familiarity with LangGraph a plus Strong communication skills, able to explain technical problems clearly More ❯

Full-Stack Engineer - Fixed Income Trading A top-tier hedge fund is hiring a Full-Stack Engineer aligned directly to a high-performing Fixed Income trading desk. This is not a platform role - you’ll sit close to the risk and P&L, build tools traders actually use in live markets, and ship fast. What you’ll build … better decisions. Top of the market compensation. High visibility. High expectations. No bureaucracy. Core requirements Expert-level proficiency in Python and JavaScript/TypeScript/React. 3+ years’ professional software engineering experience. Strong CS fundamentals (data structures, algorithms, performance). Comfortable building for live, data-heavy, real-time environments. Sharp communicator who’s happy to sit with risk takers … income/macro/FX/electronic trading/risk experience. Background in real-time, data-intensive, or low-latency environments. If you’re impact-led, comfortable owning production software that sits next to real money, and want to work where engineering output is directly tied to P&L, this is that role. More ❯

Full-Stack Engineer - Fixed Income Trading A top-tier hedge fund is hiring a Full-Stack Engineer aligned directly to a high-performing Fixed Income trading desk. This is not a platform role - you’ll sit close to the risk and P&L, build tools traders actually use in live markets, and ship fast. What you’ll build … better decisions. Top of the market compensation. High visibility. High expectations. No bureaucracy. Core requirements Expert-level proficiency in Python and JavaScript/TypeScript/React. 3+ years’ professional software engineering experience. Strong CS fundamentals (data structures, algorithms, performance). Comfortable building for live, data-heavy, real-time environments. Sharp communicator who’s happy to sit with risk takers … income/macro/FX/electronic trading/risk experience. Background in real-time, data-intensive, or low-latency environments. If you’re impact-led, comfortable owning production software that sits next to real money, and want to work where engineering output is directly tied to P&L, this is that role. More ❯

Full-Stack Engineer - Fixed Income Trading A top-tier hedge fund is hiring a Full-Stack Engineer aligned directly to a high-performing Fixed Income trading desk. This is not a platform role - you’ll sit close to the risk and P&L, build tools traders actually use in live markets, and ship fast. What you’ll build … better decisions. Top of the market compensation. High visibility. High expectations. No bureaucracy. Core requirements Expert-level proficiency in Python and JavaScript/TypeScript/React. 3+ years’ professional software engineering experience. Strong CS fundamentals (data structures, algorithms, performance). Comfortable building for live, data-heavy, real-time environments. Sharp communicator who’s happy to sit with risk takers … income/macro/FX/electronic trading/risk experience. Background in real-time, data-intensive, or low-latency environments. If you’re impact-led, comfortable owning production software that sits next to real money, and want to work where engineering output is directly tied to P&L, this is that role. More ❯

Full-Stack Engineer - Fixed Income Trading A top-tier hedge fund is hiring a Full-Stack Engineer aligned directly to a high-performing Fixed Income trading desk. This is not a platform role - you’ll sit close to the risk and P&L, build tools traders actually use in live markets, and ship fast. What you’ll build … better decisions. Top of the market compensation. High visibility. High expectations. No bureaucracy. Core requirements Expert-level proficiency in Python and JavaScript/TypeScript/React. 3+ years’ professional software engineering experience. Strong CS fundamentals (data structures, algorithms, performance). Comfortable building for live, data-heavy, real-time environments. Sharp communicator who’s happy to sit with risk takers … income/macro/FX/electronic trading/risk experience. Background in real-time, data-intensive, or low-latency environments. If you’re impact-led, comfortable owning production software that sits next to real money, and want to work where engineering output is directly tied to P&L, this is that role. More ❯

Full-Stack Engineer - Fixed Income Trading A top-tier hedge fund is hiring a Full-Stack Engineer aligned directly to a high-performing Fixed Income trading desk. This is not a platform role - you’ll sit close to the risk and P&L, build tools traders actually use in live markets, and ship fast. What you’ll build … better decisions. Top of the market compensation. High visibility. High expectations. No bureaucracy. Core requirements Expert-level proficiency in Python and JavaScript/TypeScript/React. 3+ years’ professional software engineering experience. Strong CS fundamentals (data structures, algorithms, performance). Comfortable building for live, data-heavy, real-time environments. Sharp communicator who’s happy to sit with risk takers … income/macro/FX/electronic trading/risk experience. Background in real-time, data-intensive, or low-latency environments. If you’re impact-led, comfortable owning production software that sits next to real money, and want to work where engineering output is directly tied to P&L, this is that role. More ❯

Full-Stack Engineer - Fixed Income Trading A top-tier hedge fund is hiring a Full-Stack Engineer aligned directly to a high-performing Fixed Income trading desk. This is not a platform role - you’ll sit close to the risk and P&L, build tools traders actually use in live markets, and ship fast. What you’ll build … better decisions. Top of the market compensation. High visibility. High expectations. No bureaucracy. Core requirements Expert-level proficiency in Python and JavaScript/TypeScript/React. 3+ years’ professional software engineering experience. Strong CS fundamentals (data structures, algorithms, performance). Comfortable building for live, data-heavy, real-time environments. Sharp communicator who’s happy to sit with risk takers … income/macro/FX/electronic trading/risk experience. Background in real-time, data-intensive, or low-latency environments. If you’re impact-led, comfortable owning production software that sits next to real money, and want to work where engineering output is directly tied to P&L, this is that role. More ❯

Senior Mobile Engineer/Technical Lead – Mobile (Flutter) Up to £110,000 + Benefits Central London, 4 Days On-Site + 1 Day Remote 80% Hands on/20% Leadership Can Provide Sponsorship We are working with an established SaaS business that has been driving innovation in the logistics and transport industry for over 25 years. Backed by significant More ❯

Senior Mobile Engineer/Technical Lead – Mobile (Flutter) Up to £110,000 + Benefits Central London, 4 Days On-Site + 1 Day Remote 80% Hands on/20% Leadership Can Provide Sponsorship We are working with an established SaaS business that has been driving innovation in the logistics and transport industry for over 25 years. Backed by significant More ❯

Senior Mobile Engineer/Technical Lead – Mobile (Flutter) Up to £110,000 + Benefits Central London, 4 Days On-Site + 1 Day Remote 80% Hands on/20% Leadership Can Provide Sponsorship We are working with an established SaaS business that has been driving innovation in the logistics and transport industry for over 25 years. Backed by significant More ❯

Senior Mobile Engineer/Technical Lead – Mobile (Flutter) Up to £110,000 + Benefits Central London, 4 Days On-Site + 1 Day Remote 80% Hands on/20% Leadership Can Provide Sponsorship We are working with an established SaaS business that has been driving innovation in the logistics and transport industry for over 25 years. Backed by significant More ❯

Seeking a highly skilled software engineering leader to join a global Risk Infrastructure function. This role will focus on developing and maintaining enterprise-grade systems and applications that enable effective management, reporting, and governance of model risk across the organisation. The successful candidate will combine technical expertise in Python, Django, and modern web frameworks with a passion for delivering More ❯

Full-Stack Engineer - Fixed Income Trading A top-tier hedge fund is hiring a Full-Stack Engineer aligned directly to a high-performing Fixed Income trading desk. This is not a platform role - you ll sit close to the risk and P&L, build tools traders actually use in live markets, and ship fast. What you ll build … better decisions. Top of the market compensation. High visibility. High expectations. No bureaucracy. Core requirements Expert-level proficiency in Python and JavaScript/TypeScript/React. 3+ years professional software engineering experience. Strong CS fundamentals (data structures, algorithms, performance). Comfortable building for live, data-heavy, real-time environments. Sharp communicator who s happy to sit with risk takers … income/macro/FX/electronic trading/risk experience. Background in real-time, data-intensive, or low-latency environments. If you re impact-led, comfortable owning production software that sits next to real money, and want to work where engineering output is directly tied to P&L, this is that role. More ❯

Full Stack Engineer | Stealth AI Startup (London, Onsite) Salary: Up to £130,000 + Equity (0.1% - 0.3%) Location: London (onsite, 5 days/week) Team: ~10 people Funding: $6.5M About the Company This stealth-mode AI startup, founded by ex-Palantir leads, is building technology that transforms everyday data into living playbooks — systems that don’t just copy processes … much out there yet, what’s being built aims to reshape how organisations think about scale, process, and tribal knowledge. 🧠 The Role We’re looking for a Full Stack Engineer (3–8 years’ experience) to join the London-based platform team. You’ll work across the stack - from building fast, powerful user-facing systems to solving deep technical challenges … London-based team on new features and infrastructure. Contribute across the stack — from Python backend to React front-end. 💡 What We’re Looking For 3+ years in full-stack software engineering. Strong background in TypeScript + React or Python , and solid understanding of SQL . Experience building and maintaining technically complex products. Excited by solving hard problems and learning More ❯

Full Stack Engineer | Stealth AI Startup (London, Onsite) Salary: Up to £130,000 + Equity (0.1% - 0.3%) Location: London (onsite, 5 days/week) Team: ~10 people Funding: $6.5M About the Company This stealth-mode AI startup, founded by ex-Palantir leads, is building technology that transforms everyday data into living playbooks — systems that don’t just copy processes … much out there yet, what’s being built aims to reshape how organisations think about scale, process, and tribal knowledge. 🧠 The Role We’re looking for a Full Stack Engineer (3–8 years’ experience) to join the London-based platform team. You’ll work across the stack - from building fast, powerful user-facing systems to solving deep technical challenges … London-based team on new features and infrastructure. Contribute across the stack — from Python backend to React front-end. 💡 What We’re Looking For 3+ years in full-stack software engineering. Strong background in TypeScript + React or Python , and solid understanding of SQL . Experience building and maintaining technically complex products. Excited by solving hard problems and learning More ❯

Full Stack Engineer | Stealth AI Startup (London, Onsite) Salary: Up to £130,000 + Equity (0.1% - 0.3%) Location: London (onsite, 5 days/week) Team: ~10 people Funding: $6.5M About the Company This stealth-mode AI startup, founded by ex-Palantir leads, is building technology that transforms everyday data into living playbooks — systems that don’t just copy processes … much out there yet, what’s being built aims to reshape how organisations think about scale, process, and tribal knowledge. 🧠 The Role We’re looking for a Full Stack Engineer (3–8 years’ experience) to join the London-based platform team. You’ll work across the stack - from building fast, powerful user-facing systems to solving deep technical challenges … London-based team on new features and infrastructure. Contribute across the stack — from Python backend to React front-end. 💡 What We’re Looking For 3+ years in full-stack software engineering. Strong background in TypeScript + React or Python , and solid understanding of SQL . Experience building and maintaining technically complex products. Excited by solving hard problems and learning More ❯

Full Stack Engineer | Stealth AI Startup (London, Onsite) Salary: Up to £130,000 + Equity (0.1% - 0.3%) Location: London (onsite, 5 days/week) Team: ~10 people Funding: $6.5M About the Company This stealth-mode AI startup, founded by ex-Palantir leads, is building technology that transforms everyday data into living playbooks — systems that don’t just copy processes … much out there yet, what’s being built aims to reshape how organisations think about scale, process, and tribal knowledge. 🧠 The Role We’re looking for a Full Stack Engineer (3–8 years’ experience) to join the London-based platform team. You’ll work across the stack - from building fast, powerful user-facing systems to solving deep technical challenges … London-based team on new features and infrastructure. Contribute across the stack — from Python backend to React front-end. 💡 What We’re Looking For 3+ years in full-stack software engineering. Strong background in TypeScript + React or Python , and solid understanding of SQL . Experience building and maintaining technically complex products. Excited by solving hard problems and learning More ❯

Full Stack Engineer | Stealth AI Startup (London, Onsite) Salary: Up to £130,000 + Equity (0.1% - 0.3%) Location: London (onsite, 5 days/week) Team: ~10 people Funding: $6.5M About the Company This stealth-mode AI startup, founded by ex-Palantir leads, is building technology that transforms everyday data into living playbooks — systems that don’t just copy processes … much out there yet, what’s being built aims to reshape how organisations think about scale, process, and tribal knowledge. 🧠 The Role We’re looking for a Full Stack Engineer (3–8 years’ experience) to join the London-based platform team. You’ll work across the stack - from building fast, powerful user-facing systems to solving deep technical challenges … London-based team on new features and infrastructure. Contribute across the stack — from Python backend to React front-end. 💡 What We’re Looking For 3+ years in full-stack software engineering. Strong background in TypeScript + React or Python , and solid understanding of SQL . Experience building and maintaining technically complex products. Excited by solving hard problems and learning More ❯

Full Stack Engineer | Stealth AI Startup (London, Onsite) Salary: Up to £130,000 + Equity (0.1% - 0.3%) Location: London (onsite, 5 days/week) Team: ~10 people Funding: $6.5M About the Company This stealth-mode AI startup, founded by ex-Palantir leads, is building technology that transforms everyday data into living playbooks — systems that don’t just copy processes … much out there yet, what’s being built aims to reshape how organisations think about scale, process, and tribal knowledge. 🧠 The Role We’re looking for a Full Stack Engineer (3–8 years’ experience) to join the London-based platform team. You’ll work across the stack - from building fast, powerful user-facing systems to solving deep technical challenges … London-based team on new features and infrastructure. Contribute across the stack — from Python backend to React front-end. 💡 What We’re Looking For 3+ years in full-stack software engineering. Strong background in TypeScript + React or Python , and solid understanding of SQL . Experience building and maintaining technically complex products. Excited by solving hard problems and learning More ❯

Full Stack Engineer | Stealth AI Startup (London, Onsite) While professional experience and qualifications are key for this role, make sure to check you have the preferable soft skills before applying if required. Salary: Up to £130,000 + Equity (0.1% - 0.3%) Location: London (onsite, 5 days/week) Team: ~10 people Funding: $6.5M About the Company This stealth-mode … much out there yet, what's being built aims to reshape how organisations think about scale, process, and tribal knowledge. The Role We're looking for a Full Stack Engineer (3–8 years' experience) to join the London-based platform team. You'll work across the stack - from building fast, powerful user-facing systems to solving deep technical challenges … London-based team on new features and infrastructure. Contribute across the stack — from Python backend to React front-end. What We're Looking For 3+ years in full-stack software engineering. Strong background in TypeScript + React or Python, and solid understanding of SQL. Experience building and maintaining technically complex products. Excited by solving hard problems and learning fast. More ❯

everyone to have personal dignity at work and be empowered, so you can be your best, true authentic self each and every day. About the Role Write clean, maintainable software to critical deadlines whilst following best engineering practices. Understanding and solving challenging problems through simplistic solutions and services. Architect and build using technology that is best suited to solving … in central London one day per week to catch up with other team members. The role may also require occasional travel to other offices when necessary. About You Talented engineer with a passion for software quality, an eye for continuous improvements, and a solution-based approach that focuses on the bigger picture whilst remaining pragmatic and operating within … known constraints. Ideally 5+ years' hands-on commercial experience architecting, designing and implementing resilient and reliable software and integration solutions, but if you are technically talented, passionate and can communicate then we're interested to hear from you regardless of experience years. Demonstrable software development experience in .NET Core, C# plus one of Blazor, JavaScript, Angular, Azure, RabbitMQ More ❯

everyone to have personal dignity at work and be empowered, so you can be your best, true authentic self each and every day. About the Role Write clean, maintainable software to critical deadlines whilst following best engineering practices. Understanding and solving challenging problems through simplistic solutions and services. Architect and build using technology that is best suited to solving … in central London one day per week to catch up with other team members. The role may also require occasional travel to other offices when necessary. About You Talented engineer with a passion for software quality, an eye for continuous improvements, and a solution-based approach that focuses on the bigger picture whilst remaining pragmatic and operating within … known constraints. Ideally 5+ years' hands-on commercial experience architecting, designing and implementing resilient and reliable software and integration solutions, but if you are technically talented, passionate and can communicate then we're interested to hear from you regardless of experience years. Demonstrable software development experience in .NET Core, C# plus one of Blazor, JavaScript, Angular, Azure, RabbitMQ More ❯