451 to 475 of 1,038 Software Engineer Jobs in London

Trading Software Engineer - Systematic Market Maker Location: London (onsite 4 days) £375k++ total compensation Quant capital is urgently looking for a Software Developer to join a prestigious market maker. This role sits in a highly autonomous engineering team building performance-critical trading systems that power both OTC and exchange-based strategies across global markets. You’ll work … logic, market data processing, and order handling Optimise data flow and system throughput under real-time constraints Implement core components in Kotlin (some C++ and legacy Python/Java) Engineer for reliability, testing, monitoring and rapid fault recovery What You'll Bring Solid command of CS fundamentals, algorithms, architecture, systems, likely been a competitive programmer. Advanced experience in Kotlin More ❯

Trading Software Engineer - Systematic Market Maker Location: London (onsite 4 days) £375k++ total compensation Quant capital is urgently looking for a Software Developer to join a prestigious market maker. This role sits in a highly autonomous engineering team building performance-critical trading systems that power both OTC and exchange-based strategies across global markets. You’ll work … logic, market data processing, and order handling Optimise data flow and system throughput under real-time constraints Implement core components in Kotlin (some C++ and legacy Python/Java) Engineer for reliability, testing, monitoring and rapid fault recovery What You'll Bring Solid command of CS fundamentals, algorithms, architecture, systems, likely been a competitive programmer. Advanced experience in Kotlin More ❯

Trading Software Engineer - Systematic Market Maker Location: London (onsite 4 days) £375k++ total compensation Quant capital is urgently looking for a Software Developer to join a prestigious market maker. This role sits in a highly autonomous engineering team building performance-critical trading systems that power both OTC and exchange-based strategies across global markets. You’ll work … logic, market data processing, and order handling Optimise data flow and system throughput under real-time constraints Implement core components in Kotlin (some C++ and legacy Python/Java) Engineer for reliability, testing, monitoring and rapid fault recovery What You'll Bring Solid command of CS fundamentals, algorithms, architecture, systems, likely been a competitive programmer. Advanced experience in Kotlin More ❯

Trading Software Engineer - Systematic Market Maker Location: London (onsite 4 days) £375k++ total compensation Quant capital is urgently looking for a Software Developer to join a prestigious market maker. This role sits in a highly autonomous engineering team building performance-critical trading systems that power both OTC and exchange-based strategies across global markets. You’ll work … logic, market data processing, and order handling Optimise data flow and system throughput under real-time constraints Implement core components in Kotlin (some C++ and legacy Python/Java) Engineer for reliability, testing, monitoring and rapid fault recovery What You'll Bring Solid command of CS fundamentals, algorithms, architecture, systems, likely been a competitive programmer. Advanced experience in Kotlin More ❯

Software Engineer II Why Join Us? Are you passionate about building robust, scalable systems that make a real impact? At Governance, Compliance & Insights, you'll join a collaborative team tackling the unique challenges of enterprise data protection. Here, your ideas matter, your code shapes the future, and your work directly improves how global businesses safeguard their most valuable More ❯

Java Software Engineer Our client, a fast-growing payments technology company building next-generation solutions that power seamless, secure transactions around the world are seeking talented Java Engineers to join their collaborative and high-performing engineering team. What You’ll Do Design and build robust Microservices using Java and Spring Boot Work on scalable, event-driven systems that … process millions of transactions Collaborate with cross-functional teams (Product, DevOps, QA) to deliver high-quality software Contribute to technical discussions, architecture decisions, and best practices Continuously improve system performance, reliability, and security What We’re Looking For Strong experience with Java (11+) and Spring Boot Solid understanding of microservices architecture and RESTful APIs Experience with AWS or another More ❯

Java Software Engineer Our client, a fast-growing payments technology company building next-generation solutions that power seamless, secure transactions around the world are seeking talented Java Engineers to join their collaborative and high-performing engineering team. What You’ll Do Design and build robust Microservices using Java and Spring Boot Work on scalable, event-driven systems that … process millions of transactions Collaborate with cross-functional teams (Product, DevOps, QA) to deliver high-quality software Contribute to technical discussions, architecture decisions, and best practices Continuously improve system performance, reliability, and security What We’re Looking For Strong experience with Java (11+) and Spring Boot Solid understanding of microservices architecture and RESTful APIs Experience with AWS or another More ❯

Founding Engineer - London - Exciting Start-Up! Job Title: Backend Software Engineer Location: On-Site Type: Full-time We are looking for engineers excited about the opportunity to join an exciting security startup, detecting real intrusions before they become breaches. They are venture-backed and building modern tools for threat detection. Customers include some of the most security … conscious companies in the world, and they’re just getting started. What You’ll Do: We’re looking for a backend engineer to help us design and scale systems. You’ll work on telemetry pipelines, alerting infrastructure, internal APIs, and integrations with modern security tools. What We’re Looking For: 3+ years of experience building and maintaining backend systems … tooling or incident response workflows Why Join? Work on hard, meaningful problems in cybersecurity Be part of a fast, technical, remote-first team Competitive salary and meaningful equity Founding Engineer - London - Exciting Start-Up More ❯

Founding Engineer - London - Exciting Start-Up! Job Title: Backend Software Engineer Location: On-Site Type: Full-time We are looking for engineers excited about the opportunity to join an exciting security startup, detecting real intrusions before they become breaches. They are venture-backed and building modern tools for threat detection. Customers include some of the most security … conscious companies in the world, and they’re just getting started. What You’ll Do: We’re looking for a backend engineer to help us design and scale systems. You’ll work on telemetry pipelines, alerting infrastructure, internal APIs, and integrations with modern security tools. What We’re Looking For: 3+ years of experience building and maintaining backend systems … tooling or incident response workflows Why Join? Work on hard, meaningful problems in cybersecurity Be part of a fast, technical, remote-first team Competitive salary and meaningful equity Founding Engineer - London - Exciting Start-Up More ❯

Founding Engineer - London - Exciting Start-Up! Job Title: Backend Software Engineer Location: On-Site Type: Full-time We are looking for engineers excited about the opportunity to join an exciting security startup, detecting real intrusions before they become breaches. They are venture-backed and building modern tools for threat detection. Customers include some of the most security … conscious companies in the world, and they’re just getting started. What You’ll Do: We’re looking for a backend engineer to help us design and scale systems. You’ll work on telemetry pipelines, alerting infrastructure, internal APIs, and integrations with modern security tools. What We’re Looking For: 3+ years of experience building and maintaining backend systems … tooling or incident response workflows Why Join? Work on hard, meaningful problems in cybersecurity Be part of a fast, technical, remote-first team Competitive salary and meaningful equity Founding Engineer - London - Exciting Start-Up More ❯

Founding Engineer - London - Exciting Start-Up! Job Title: Backend Software Engineer Location: On-Site Type: Full-time We are looking for engineers excited about the opportunity to join an exciting security startup, detecting real intrusions before they become breaches. They are venture-backed and building modern tools for threat detection. Customers include some of the most security … conscious companies in the world, and they’re just getting started. What You’ll Do: We’re looking for a backend engineer to help us design and scale systems. You’ll work on telemetry pipelines, alerting infrastructure, internal APIs, and integrations with modern security tools. What We’re Looking For: 3+ years of experience building and maintaining backend systems … tooling or incident response workflows Why Join? Work on hard, meaningful problems in cybersecurity Be part of a fast, technical, remote-first team Competitive salary and meaningful equity Founding Engineer - London - Exciting Start-Up More ❯

Senior Software Developer (Java/Spring) | London (Hybrid) | £50K 💰 📍 Location: London (Hybrid) 🕒 Experience: 2+ years 💼 Type: Full-time | Permanent 🚀 The company are developing software solutions that address a wide range of challenges faced by the public sector. Their customers include government departments, agencies, and other public sector organisations, helping them streamline processes and achieve their goals effectively. They … are looking for a skilled Senior Software Engineer who looking is eager to learn, and are ready to contribute to our ongoing growth and success. 💻 What You’ll Do: 🔧 Develop and maintain applications using Java & Spring Boot ✅ Write and maintain unit, integration, and end-to-end tests 🔍 Participate in code reviews and uphold coding standards 🎨 Help design scalable … your contributions. 🏥 Private health insurance to keep you covered. 💼 Pension scheme for a secure future. ✨ If you're passionate about writing high-quality code and want to work on software that makes a difference, this role is for you More ❯

Senior Software Developer (Java/Spring) | London (Hybrid) | £50K 💰 📍 Location: London (Hybrid) 🕒 Experience: 2+ years 💼 Type: Full-time | Permanent 🚀 The company are developing software solutions that address a wide range of challenges faced by the public sector. Their customers include government departments, agencies, and other public sector organisations, helping them streamline processes and achieve their goals effectively. They … are looking for a skilled Senior Software Engineer who looking is eager to learn, and are ready to contribute to our ongoing growth and success. 💻 What You’ll Do: 🔧 Develop and maintain applications using Java & Spring Boot ✅ Write and maintain unit, integration, and end-to-end tests 🔍 Participate in code reviews and uphold coding standards 🎨 Help design scalable … your contributions. 🏥 Private health insurance to keep you covered. 💼 Pension scheme for a secure future. ✨ If you're passionate about writing high-quality code and want to work on software that makes a difference, this role is for you More ❯

Principal Software Engineer Join a once in a career opportunity to help build a premium private bank from the ground up. Which is currently in stealth mode , backed by significant capital and led by a visionary team. With mobilisation underway, we’re assembling a lean, elite engineering team to architect and deliver a secure, scalable, multi-cloud banking … platform using modern technologies. This is a career-defining role for a polyglot engineer with deep expertise in Rust and Python , and a passion for building robust systems in highly regulated environments. What You’ll Do Design and build core banking services and infrastructure using Rust , Python , and other modern languages. Develop secure, scalable systems across AWS and GCP More ❯

Principal Software Engineer Join a once in a career opportunity to help build a premium private bank from the ground up. Which is currently in stealth mode , backed by significant capital and led by a visionary team. With mobilisation underway, we’re assembling a lean, elite engineering team to architect and deliver a secure, scalable, multi-cloud banking … platform using modern technologies. This is a career-defining role for a polyglot engineer with deep expertise in Rust and Python , and a passion for building robust systems in highly regulated environments. What You’ll Do Design and build core banking services and infrastructure using Rust , Python , and other modern languages. Develop secure, scalable systems across AWS and GCP More ❯

Senior Software Engineer Hybrid - 4 days a week in Central London £100k + Bonus + Equity Fin-Tech/Payments We’re working with a well funded, high-growth fintech start-up that’s building the next generation of financial automation. They're building an Ai powered, fully automated financial operating system and payment platform. This is a … closely with leadership in a flat, agile team Competitive package – £100k + equity + bonus This isn’t a role for someone looking to coast. It’s for an engineer who loves solving technical challenges, enjoys working directly with customers, and wants to help build something big from the ground up. We cannot offer visa sponsorship for this role More ❯

Senior Software Engineer Hybrid - 4 days a week in Central London £100k + Bonus + Equity Fin-Tech/Payments We’re working with a well funded, high-growth fintech start-up that’s building the next generation of financial automation. They're building an Ai powered, fully automated financial operating system and payment platform. This is a … closely with leadership in a flat, agile team Competitive package – £100k + equity + bonus This isn’t a role for someone looking to coast. It’s for an engineer who loves solving technical challenges, enjoys working directly with customers, and wants to help build something big from the ground up. We cannot offer visa sponsorship for this role More ❯

Senior Software Engineer Hybrid - 4 days a week in Central London £100k + Bonus + Equity Fin-Tech/Payments We’re working with a well funded, high-growth fintech start-up that’s building the next generation of financial automation. They're building an Ai powered, fully automated financial operating system and payment platform. This is a … closely with leadership in a flat, agile team Competitive package – £100k + equity + bonus This isn’t a role for someone looking to coast. It’s for an engineer who loves solving technical challenges, enjoys working directly with customers, and wants to help build something big from the ground up. We cannot offer visa sponsorship for this role More ❯

Senior Software Engineer Hybrid - 4 days a week in Central London £100k + Bonus + Equity Fin-Tech/Payments We’re working with a well funded, high-growth fintech start-up that’s building the next generation of financial automation. They're building an Ai powered, fully automated financial operating system and payment platform. This is a … closely with leadership in a flat, agile team Competitive package – £100k + equity + bonus This isn’t a role for someone looking to coast. It’s for an engineer who loves solving technical challenges, enjoys working directly with customers, and wants to help build something big from the ground up. We cannot offer visa sponsorship for this role More ❯

Senior C++ Software Engineer Salary: £100,000 – £135,000 Key Responsibilities Design, develop, and optimize software in C++ and/or Rust for control and orchestration systems. Build low-latency interfaces between hardware and classical compute systems. Collaborate with hardware teams to integrate software with FPGAs and high-speed digital electronics. Develop and maintain firmware and … platforms. Analyze and optimize system performance including latency, throughput, and resource utilization. Participate in system architecture design and technical decision-making. Conduct code reviews , mentor junior engineers, and promote software best practices. Work with cross-functional teams to ensure seamless integration of hardware and software components for robust, production-ready systems. Ensure system reliability , fault tolerance , and performance … in data centre environments. Required Qualifications Bachelor’s or Master’s degree in Computer Engineering , Electrical Engineering , Physics , or a related field. 5+ years of professional experience in software development, with a focus on C++ and/or Rust . Strong understanding of FPGA architectures , toolchains (e.g., Xilinx Vivado, Intel Quartus), and hardware description languages ( VHDL/Verilog ). More ❯

Senior C++ Software Engineer Salary: £75,000 - £135,000 Key Responsibilities Design, develop, and optimize software in C++ and/or Rust for control and orchestration systems. Build low-latency interfaces between hardware and classical compute systems. Collaborate with hardware teams to integrate software with FPGAs and high-speed digital electronics. Develop and maintain firmware and … platforms. Analyze and optimize system performance including latency, throughput, and resource utilization. Participate in system architecture design and technical decision-making. Conduct code reviews , mentor junior engineers, and promote software best practices. Work with cross-functional teams to ensure seamless integration of hardware and software components for robust, production-ready systems. Ensure system reliability , fault tolerance , and performance … in data centre environments. Required Qualifications Bachelor's or Master's degree in Computer Engineering , Electrical Engineering , Physics , or a related field. 5+ years of professional experience in software development, with a focus on C++ and/or Rust . Strong understanding of FPGA architectures , toolchains (e.g., Xilinx Vivado, Intel Quartus), and hardware description languages ( VHDL/Verilog ). More ❯

Senior C++ Software Engineer Salary: £100,000 – £135,000 Key Responsibilities Design, develop, and optimize software in C++ and/or Rust for control and orchestration systems. Build low-latency interfaces between hardware and classical compute systems. Collaborate with hardware teams to integrate software with FPGAs and high-speed digital electronics. Develop and maintain firmware and … platforms. Analyze and optimize system performance including latency, throughput, and resource utilization. Participate in system architecture design and technical decision-making. Conduct code reviews , mentor junior engineers, and promote software best practices. Work with cross-functional teams to ensure seamless integration of hardware and software components for robust, production-ready systems. Ensure system reliability , fault tolerance , and performance … in data centre environments. Required Qualifications Bachelor’s or Master’s degree in Computer Engineering , Electrical Engineering , Physics , or a related field. 5+ years of professional experience in software development, with a focus on C++ and/or Rust . Strong understanding of FPGA architectures , toolchains (e.g., Xilinx Vivado, Intel Quartus), and hardware description languages ( VHDL/Verilog ). More ❯

Senior C++ Software Engineer Salary: £100,000 – £135,000 Key Responsibilities Design, develop, and optimize software in C++ and/or Rust for control and orchestration systems. Build low-latency interfaces between hardware and classical compute systems. Collaborate with hardware teams to integrate software with FPGAs and high-speed digital electronics. Develop and maintain firmware and … platforms. Analyze and optimize system performance including latency, throughput, and resource utilization. Participate in system architecture design and technical decision-making. Conduct code reviews , mentor junior engineers, and promote software best practices. Work with cross-functional teams to ensure seamless integration of hardware and software components for robust, production-ready systems. Ensure system reliability , fault tolerance , and performance … in data centre environments. Required Qualifications Bachelor’s or Master’s degree in Computer Engineering , Electrical Engineering , Physics , or a related field. 5+ years of professional experience in software development, with a focus on C++ and/or Rust . Strong understanding of FPGA architectures , toolchains (e.g., Xilinx Vivado, Intel Quartus), and hardware description languages ( VHDL/Verilog ). More ❯

Java Software Engineer An ambitious AI company on a mission to reshape how businesses harness the power of data and automation are seeking Java Developers who thrive in modern, cloud-native environments and want to make real impact. What you’ll do Design and develop high-performance microservices using Spring Boot Build scalable, cloud-based applications on AWS More ❯

Java Software Engineer An ambitious AI company on a mission to reshape how businesses harness the power of data and automation are seeking Java Developers who thrive in modern, cloud-native environments and want to make real impact. What you’ll do Design and develop high-performance microservices using Spring Boot Build scalable, cloud-based applications on AWS More ❯