london (city of london), south east england, united kingdom Hybrid / WFH Options
develop
team within a modern, high-performance engineering environment. This is an opportunity to lead from the front, owning architectural direction, driving technical excellence, and ensuring delivery of scalable, resilient systems in a cloud-first, microservices-driven environment. You’ll be a hands-on leader, balancing coding, mentoring, and strategic influence across multiple teams and initiatives. The Role As a … you will combine hands-on technical expertise with leadership responsibilities, including: Designing and leading the development of scalable backend services using .NET 8 (C#) Architecting cloud-native microservices and distributedsystems on AWS Driving engineering standards, best practices, and technical excellence across teams Leading architectural discussions and guiding long-term technical strategy Collaborating with product, DevOps, and front … while empowering others to do their best work. You’ll bring: 8+ years of commercial experience with C#/.NET Core/.NET 6+ Proven experience designing and building distributed, microservices-based systems Deep understanding of AWS (ECS, Lambda, EventBridge, DynamoDB, S3, etc.) Strong background in API design, asynchronous/event-driven architectures, and system scalability Expertise with More ❯
slough, south east england, united kingdom Hybrid / WFH Options
develop
team within a modern, high-performance engineering environment. This is an opportunity to lead from the front, owning architectural direction, driving technical excellence, and ensuring delivery of scalable, resilient systems in a cloud-first, microservices-driven environment. You’ll be a hands-on leader, balancing coding, mentoring, and strategic influence across multiple teams and initiatives. The Role As a … you will combine hands-on technical expertise with leadership responsibilities, including: Designing and leading the development of scalable backend services using .NET 8 (C#) Architecting cloud-native microservices and distributedsystems on AWS Driving engineering standards, best practices, and technical excellence across teams Leading architectural discussions and guiding long-term technical strategy Collaborating with product, DevOps, and front … while empowering others to do their best work. You’ll bring: 8+ years of commercial experience with C#/.NET Core/.NET 6+ Proven experience designing and building distributed, microservices-based systems Deep understanding of AWS (ECS, Lambda, EventBridge, DynamoDB, S3, etc.) Strong background in API design, asynchronous/event-driven architectures, and system scalability Expertise with More ❯
Oxfordshire, Milton Hill, United Kingdom Hybrid / WFH Options
Mars Recruitment
with tools such as CMake, GIT (or other source code control system), a bug or issue tracking system, and debuggers Experience of developing complex software applications Experience developing control systems Python Distributedsystems Database interaction/SQL queries Cloud infrastructure (e.g. Azure/AWS) Our client is offering a hybrid working arrangement with 3 days in their More ❯
london, south east england, united kingdom Hybrid / WFH Options
Paradigm Talent
pushing the boundaries of computational biology, combining machine learning, cloud infrastructure, and scientific research to accelerate discoveries in life sciences. As a Staff Backend Engineer , you’ll build the distributedsystems and data infrastructure that power the lab’s next-generation biology platform. From model serving to real-time data processing, your work will form the backbone of … Collaborate across disciplines , working with ML engineers, biologists, and platform teams to ensure seamless integration between computation, data, and science. You should have Deep experience building and scaling backend systems and distributed applications . Strong coding skills in Python , with an understanding of performance tuning and concurrency. Hands-on experience with Kubernetes , AWS , and modern cloud infrastructure . … systems. Knowledge of scientific or biological computing environments . This is a rare opportunity to join a deep-tech AI lab where backend engineering meets scientific discovery, building the systems that let machine learning models and experimental biology evolve together. If you want to design the infrastructure behind a platform that could change how we understand life itself, we More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Paradigm Talent
pushing the boundaries of computational biology, combining machine learning, cloud infrastructure, and scientific research to accelerate discoveries in life sciences. As a Staff Backend Engineer , you’ll build the distributedsystems and data infrastructure that power the lab’s next-generation biology platform. From model serving to real-time data processing, your work will form the backbone of … Collaborate across disciplines , working with ML engineers, biologists, and platform teams to ensure seamless integration between computation, data, and science. You should have Deep experience building and scaling backend systems and distributed applications . Strong coding skills in Python , with an understanding of performance tuning and concurrency. Hands-on experience with Kubernetes , AWS , and modern cloud infrastructure . … systems. Knowledge of scientific or biological computing environments . This is a rare opportunity to join a deep-tech AI lab where backend engineering meets scientific discovery, building the systems that let machine learning models and experimental biology evolve together. If you want to design the infrastructure behind a platform that could change how we understand life itself, we More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Paradigm Talent
pushing the boundaries of computational biology, combining machine learning, cloud infrastructure, and scientific research to accelerate discoveries in life sciences. As a Staff Backend Engineer , you’ll build the distributedsystems and data infrastructure that power the lab’s next-generation biology platform. From model serving to real-time data processing, your work will form the backbone of … Collaborate across disciplines , working with ML engineers, biologists, and platform teams to ensure seamless integration between computation, data, and science. You should have Deep experience building and scaling backend systems and distributed applications . Strong coding skills in Python , with an understanding of performance tuning and concurrency. Hands-on experience with Kubernetes , AWS , and modern cloud infrastructure . … systems. Knowledge of scientific or biological computing environments . This is a rare opportunity to join a deep-tech AI lab where backend engineering meets scientific discovery, building the systems that let machine learning models and experimental biology evolve together. If you want to design the infrastructure behind a platform that could change how we understand life itself, we More ❯
Security standards, Concurrency and Multi-threading, Collections, PostgreSQL, Azure, Docker, Kubernetes • Hands-on, high-energy, detail-oriented, proactive, and able to function independently under pressure. • Strong Problem-Solving skills. • Distributedsystems (Databases, caches, microservices, message broker) • API and Contract Testing using REST Assured/Postman/Swagger/SOAP UI + Groovy/Spring Cloud Contract • Test Driven … Hands on with Jenkins/PCF or similar tools for automated provisioning of build and test infrastructure. • Troubleshooting with Splunk, API aids like Swagger/Postman and source control systems like Git • Intermediate knowledge of Maven, Junit, Redis, Oracle database, SQL, Unix command, Shell scripting. • Good to have exposure to Financial/Banking Domain, Frontend development, JavaScript, HTML5, CSS3 More ❯
Security standards, Concurrency and Multi-threading, Collections, PostgreSQL, Azure, Docker, Kubernetes • Hands-on, high-energy, detail-oriented, proactive, and able to function independently under pressure. • Strong Problem-Solving skills. • Distributedsystems (Databases, caches, microservices, message broker) • API and Contract Testing using REST Assured/Postman/Swagger/SOAP UI + Groovy/Spring Cloud Contract • Test Driven … Hands on with Jenkins/PCF or similar tools for automated provisioning of build and test infrastructure. • Troubleshooting with Splunk, API aids like Swagger/Postman and source control systems like Git • Intermediate knowledge of Maven, Junit, Redis, Oracle database, SQL, Unix command, Shell scripting. • Good to have exposure to Financial/Banking Domain, Frontend development, JavaScript, HTML5, CSS3 More ❯
london (city of london), south east england, united kingdom
Fulcrum Digital Inc
Security standards, Concurrency and Multi-threading, Collections, PostgreSQL, Azure, Docker, Kubernetes • Hands-on, high-energy, detail-oriented, proactive, and able to function independently under pressure. • Strong Problem-Solving skills. • Distributedsystems (Databases, caches, microservices, message broker) • API and Contract Testing using REST Assured/Postman/Swagger/SOAP UI + Groovy/Spring Cloud Contract • Test Driven … Hands on with Jenkins/PCF or similar tools for automated provisioning of build and test infrastructure. • Troubleshooting with Splunk, API aids like Swagger/Postman and source control systems like Git • Intermediate knowledge of Maven, Junit, Redis, Oracle database, SQL, Unix command, Shell scripting. • Good to have exposure to Financial/Banking Domain, Frontend development, JavaScript, HTML5, CSS3 More ❯
/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. This is a unique opportunity to work in an agile, high-ownership engineering culture. What You'll Be Doing: Build and scale … design, and infrastructure Troubleshoot complex issues and help ensure system reliability and performance What You’ll Bring: Strong backend engineering experience, especially in Java and Spring Deep understanding of distributedsystems and microservices Hands-on experience with AWS , Kubernetes , Docker , and Terraform Familiarity with CI/CD pipelines and testing best practices Solid SQL and relational database skills More ❯
london (city of london), south east england, united kingdom
Arrows
/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. This is a unique opportunity to work in an agile, high-ownership engineering culture. What You'll Be Doing: Build and scale … design, and infrastructure Troubleshoot complex issues and help ensure system reliability and performance What You’ll Bring: Strong backend engineering experience, especially in Java and Spring Deep understanding of distributedsystems and microservices Hands-on experience with AWS , Kubernetes , Docker , and Terraform Familiarity with CI/CD pipelines and testing best practices Solid SQL and relational database skills More ❯
/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. This is a unique opportunity to work in an agile, high-ownership engineering culture. What You'll Be Doing: Build and scale … design, and infrastructure Troubleshoot complex issues and help ensure system reliability and performance What You’ll Bring: Strong backend engineering experience, especially in Java and Spring Deep understanding of distributedsystems and microservices Hands-on experience with AWS , Kubernetes , Docker , and Terraform Familiarity with CI/CD pipelines and testing best practices Solid SQL and relational database skills More ❯
london, south east england, united kingdom Hybrid / WFH Options
NonStop Consulting
On-site) Location: London, UK Type: Full-time | Permanent Salary: Competitive + equity + benefits Are you a seasoned Rust Engineer with a passion for building high-performance, reliable systems? We’re looking for an experienced Senior Rust Engineer to join our London team and take ownership of critical backend components that power our next-generation platform. What You … ll Do Architect, design, and implement core systems in Rust Lead by example — write clean, efficient, and idiomatic Rust code Mentor junior and mid-level engineers, sharing best practices in systems design and Rust development Collaborate with cross-functional teams to deliver scalable, secure, and fault-tolerant applications Drive performance tuning, code reviews, and architectural improvements across the … stack What We’re Looking For 5–8+ years of professional software engineering experience 3–5+ years of hands-on experience with Rust in production environments Strong understanding of systems programming , concurrency , networking , and low-level performance optimisation Experience with microservices , distributedsystems , or blockchain technologies is highly desirable Familiarity with Linux systems , CI/CD More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
NonStop Consulting
On-site) Location: London, UK Type: Full-time | Permanent Salary: Competitive + equity + benefits Are you a seasoned Rust Engineer with a passion for building high-performance, reliable systems? We’re looking for an experienced Senior Rust Engineer to join our London team and take ownership of critical backend components that power our next-generation platform. What You … ll Do Architect, design, and implement core systems in Rust Lead by example — write clean, efficient, and idiomatic Rust code Mentor junior and mid-level engineers, sharing best practices in systems design and Rust development Collaborate with cross-functional teams to deliver scalable, secure, and fault-tolerant applications Drive performance tuning, code reviews, and architectural improvements across the … stack What We’re Looking For 5–8+ years of professional software engineering experience 3–5+ years of hands-on experience with Rust in production environments Strong understanding of systems programming , concurrency , networking , and low-level performance optimisation Experience with microservices , distributedsystems , or blockchain technologies is highly desirable Familiarity with Linux systems , CI/CD More ❯
slough, south east england, united kingdom Hybrid / WFH Options
NonStop Consulting
On-site) Location: London, UK Type: Full-time | Permanent Salary: Competitive + equity + benefits Are you a seasoned Rust Engineer with a passion for building high-performance, reliable systems? We’re looking for an experienced Senior Rust Engineer to join our London team and take ownership of critical backend components that power our next-generation platform. What You … ll Do Architect, design, and implement core systems in Rust Lead by example — write clean, efficient, and idiomatic Rust code Mentor junior and mid-level engineers, sharing best practices in systems design and Rust development Collaborate with cross-functional teams to deliver scalable, secure, and fault-tolerant applications Drive performance tuning, code reviews, and architectural improvements across the … stack What We’re Looking For 5–8+ years of professional software engineering experience 3–5+ years of hands-on experience with Rust in production environments Strong understanding of systems programming , concurrency , networking , and low-level performance optimisation Experience with microservices , distributedsystems , or blockchain technologies is highly desirable Familiarity with Linux systems , CI/CD More ❯
to-end ownership + product influence 🌍 Flexible location (London/Athens hubs) Key Responsibilities Architect and implement the backend platform for data processing, search, and advanced reasoning Design scalable systems and APIs for data-intensive, low-latency workflows Optimize database interactions for high-speed visual search and reasoning Manage cloud infrastructure (compute, networking, storage, security, observability) Set up CI … first approach: asking “why,” not just “how” What You’ll Need Essential Skills Startup Mindset: Bias for action, ownership, comfort with ambiguity Backend Development: Python (FastAPI, Flask) + microservices DistributedSystems: Scaling high-volume data systems Cloud: AWS/GCP/Azure (ECS/EKS, S3, Lambda, IAM or similar) Databases: PostgreSQL + strong data modeling Containers … Vector search (Pinecone, pgvector, Weaviate, Qdrant etc.) Video ingestion pipelines & codecs 💡Don’t worry if you haven’t used these exact tools. If you’ve built and scaled similar systems, we’d love to hear from you. Next Steps Apply here or email us at jobs@inferity.ai with your CV, GitHub, or just a note on why this role More ❯
london (city of london), south east england, united kingdom
Inferity AI
to-end ownership + product influence 🌍 Flexible location (London/Athens hubs) Key Responsibilities Architect and implement the backend platform for data processing, search, and advanced reasoning Design scalable systems and APIs for data-intensive, low-latency workflows Optimize database interactions for high-speed visual search and reasoning Manage cloud infrastructure (compute, networking, storage, security, observability) Set up CI … first approach: asking “why,” not just “how” What You’ll Need Essential Skills Startup Mindset: Bias for action, ownership, comfort with ambiguity Backend Development: Python (FastAPI, Flask) + microservices DistributedSystems: Scaling high-volume data systems Cloud: AWS/GCP/Azure (ECS/EKS, S3, Lambda, IAM or similar) Databases: PostgreSQL + strong data modeling Containers … Vector search (Pinecone, pgvector, Weaviate, Qdrant etc.) Video ingestion pipelines & codecs 💡Don’t worry if you haven’t used these exact tools. If you’ve built and scaled similar systems, we’d love to hear from you. Next Steps Apply here or email us at jobs@inferity.ai with your CV, GitHub, or just a note on why this role More ❯
to-end ownership + product influence 🌍 Flexible location (London/Athens hubs) Key Responsibilities Architect and implement the backend platform for data processing, search, and advanced reasoning Design scalable systems and APIs for data-intensive, low-latency workflows Optimize database interactions for high-speed visual search and reasoning Manage cloud infrastructure (compute, networking, storage, security, observability) Set up CI … first approach: asking “why,” not just “how” What You’ll Need Essential Skills Startup Mindset: Bias for action, ownership, comfort with ambiguity Backend Development: Python (FastAPI, Flask) + microservices DistributedSystems: Scaling high-volume data systems Cloud: AWS/GCP/Azure (ECS/EKS, S3, Lambda, IAM or similar) Databases: PostgreSQL + strong data modeling Containers … Vector search (Pinecone, pgvector, Weaviate, Qdrant etc.) Video ingestion pipelines & codecs 💡Don’t worry if you haven’t used these exact tools. If you’ve built and scaled similar systems, we’d love to hear from you. Next Steps Apply here or email us at jobs@inferity.ai with your CV, GitHub, or just a note on why this role More ❯
the messaging service. Required Skills & Qualifications: 3+ years of experience administering Solace PubSub+ messaging systems. Strong background in production support , preferably in a 24x7 enterprise environment. Experience working with distributedsystems over WAN , with an understanding of networking, latency, and failover strategies. Solid experience with Prometheus and Grafana for system monitoring and alerting. Proficiency in troubleshooting message delivery … persistence, and topic routing. Experience with capacity management , performance tuning, and system scaling. Familiarity with Linux/Unix systems and scripting (Bash, Python, etc.). Strong analytical and problem-solving skills, with attention to detail. Excellent communication and collaboration skills. Nice to Have: Experience with containerized environments (Docker/Kubernetes). Exposure to other messaging platforms (Kafka, RabbitMQ, MQ … critical applications. Exciting opportunity to work with a wide array of technologies. Chance to further develop your programming skills while administering and supporting one of the most advanced messaging systems available in the market. More ❯
the messaging service. Required Skills & Qualifications: 3+ years of experience administering Solace PubSub+ messaging systems. Strong background in production support , preferably in a 24x7 enterprise environment. Experience working with distributedsystems over WAN , with an understanding of networking, latency, and failover strategies. Solid experience with Prometheus and Grafana for system monitoring and alerting. Proficiency in troubleshooting message delivery … persistence, and topic routing. Experience with capacity management , performance tuning, and system scaling. Familiarity with Linux/Unix systems and scripting (Bash, Python, etc.). Strong analytical and problem-solving skills, with attention to detail. Excellent communication and collaboration skills. Nice to Have: Experience with containerized environments (Docker/Kubernetes). Exposure to other messaging platforms (Kafka, RabbitMQ, MQ … critical applications. Exciting opportunity to work with a wide array of technologies. Chance to further develop your programming skills while administering and supporting one of the most advanced messaging systems available in the market. More ❯
london (city of london), south east england, united kingdom
BGC Group
the messaging service. Required Skills & Qualifications: 3+ years of experience administering Solace PubSub+ messaging systems. Strong background in production support , preferably in a 24x7 enterprise environment. Experience working with distributedsystems over WAN , with an understanding of networking, latency, and failover strategies. Solid experience with Prometheus and Grafana for system monitoring and alerting. Proficiency in troubleshooting message delivery … persistence, and topic routing. Experience with capacity management , performance tuning, and system scaling. Familiarity with Linux/Unix systems and scripting (Bash, Python, etc.). Strong analytical and problem-solving skills, with attention to detail. Excellent communication and collaboration skills. Nice to Have: Experience with containerized environments (Docker/Kubernetes). Exposure to other messaging platforms (Kafka, RabbitMQ, MQ … critical applications. Exciting opportunity to work with a wide array of technologies. Chance to further develop your programming skills while administering and supporting one of the most advanced messaging systems available in the market. More ❯
london, south east england, united kingdom Hybrid / WFH Options
develop
their technical skills About You You are a proactive, experienced engineer who enjoys solving complex problems and working with modern .NET and cloud technologies. You are passionate about improving systems, performance, and team processes. You will bring: 5+ years of commercial experience with C#/.NET Core/.NET 6+ Strong background in building distributedsystems and … Jenkins, or Azure DevOps) A collaborative approach and a passion for clean, maintainable code Nice to have: Experience with Docker and Kubernetes Exposure to serverless technologies and event-driven systems Familiarity with domain-driven design (DDD) and CQRS patterns What’s on Offer Salary up to £100,000, dependent on experience Annual bonus and full benefits package Hybrid working More ❯
slough, south east england, united kingdom Hybrid / WFH Options
develop
their technical skills About You You are a proactive, experienced engineer who enjoys solving complex problems and working with modern .NET and cloud technologies. You are passionate about improving systems, performance, and team processes. You will bring: 5+ years of commercial experience with C#/.NET Core/.NET 6+ Strong background in building distributedsystems and … Jenkins, or Azure DevOps) A collaborative approach and a passion for clean, maintainable code Nice to have: Experience with Docker and Kubernetes Exposure to serverless technologies and event-driven systems Familiarity with domain-driven design (DDD) and CQRS patterns What’s on Offer Salary up to £100,000, dependent on experience Annual bonus and full benefits package Hybrid working More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
develop
their technical skills About You You are a proactive, experienced engineer who enjoys solving complex problems and working with modern .NET and cloud technologies. You are passionate about improving systems, performance, and team processes. You will bring: 5+ years of commercial experience with C#/.NET Core/.NET 6+ Strong background in building distributedsystems and … Jenkins, or Azure DevOps) A collaborative approach and a passion for clean, maintainable code Nice to have: Experience with Docker and Kubernetes Exposure to serverless technologies and event-driven systems Familiarity with domain-driven design (DDD) and CQRS patterns What’s on Offer Salary up to £100,000, dependent on experience Annual bonus and full benefits package Hybrid working More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Salt Search
performing engineering team within retail banking. This is a fantastic opportunity for a technically minded individual who's passionate about building fast, reliable, and scalable software within a complex distributed environment. You'll play a key role in designing, developing, testing, and implementing modern microservices-based applications running in the public cloud. This is a hands-on position within … and deliver well-tested, production-ready software with strong focus on functional and non-functional requirements Deep understanding of microservices architecture , cloud-native applications, and API development Experience with distributedsystems - managing workloads at scale using modern practices for availability, performance, and observability Knowledge and experience with Test-Driven Development (TDD) and automated testing frameworks Excellent collaboration and More ❯