Senior Backend Developer London (Hybrid - 1 day per month in the office) Basic salary £90k to £100k + strong package An exciting opportunity for a Senior Backend Developer to join a fast-growing, well-funded technology business that's scaling rapidly and investing heavily in its engineering teams. This is a role for someone who enjoys building reliable, well-designed Back End systems and wants to stay close to real product impact as the platform grows. The Senior Backend Developer will be part of a product-focused engineering team working on customer-facing, mission-critical systems at scale. The emphasis is on strong software engineering fundamentals rather than framework-driven development - clean code, thoughtful design, and pragmatic problem-solving matter far more than ticking boxes on a tech stack. As a Senior Backend Developer, you'll be working in an environment that is collaborative, fast-moving, and delivery-focused where engineers are trusted to own features end-to-end, contribute to technical direction, and make sensible architectural decisions as the platform evolves. There's a genuine balance between autonomy and teamwork, with space to experiment, learn, and continuously improve how things are built. Senior Backend Developer - Key Requirements: Strong experience building Back End services using Python (or another modern Back End language) Solid grounding in software engineering fundamentals, including data structures, algorithms, and object-oriented design Experience designing, building, and maintaining scalable Back End systems Comfortable working with APIs, databases, and distributed systems Strong problem-solving skills and a pragmatic approach to debugging and refactoring Experience working with version control, testing practices, and code reviews Product-minded - able to think beyond the code and understand real user impact Experience working in fast-paced environments with evolving requirements Collaborative communicator who enjoys working closely with engineers, product, and design Senior Backend Developer - Salary & Benefits: Basic salary up to £100k Bonus and/or share options Private medical insurance Generous holiday allowance Flexible hybrid working model Learning & development budget Strong wellbeing benefits and additional perks If you're a Senior Backend Developer looking for a role where you can focus on fundamentals, build meaningful products, and grow alongside a scaling tech business with serious investment behind it, this is a strong opportunity. We are an equal opportunities employer and welcome applications from all suitably qualified candidates, regardless of race, sex, disability, religion/belief, sexual orientation, or age.
31/03/2026
Full time
Senior Backend Developer London (Hybrid - 1 day per month in the office) Basic salary £90k to £100k + strong package An exciting opportunity for a Senior Backend Developer to join a fast-growing, well-funded technology business that's scaling rapidly and investing heavily in its engineering teams. This is a role for someone who enjoys building reliable, well-designed Back End systems and wants to stay close to real product impact as the platform grows. The Senior Backend Developer will be part of a product-focused engineering team working on customer-facing, mission-critical systems at scale. The emphasis is on strong software engineering fundamentals rather than framework-driven development - clean code, thoughtful design, and pragmatic problem-solving matter far more than ticking boxes on a tech stack. As a Senior Backend Developer, you'll be working in an environment that is collaborative, fast-moving, and delivery-focused where engineers are trusted to own features end-to-end, contribute to technical direction, and make sensible architectural decisions as the platform evolves. There's a genuine balance between autonomy and teamwork, with space to experiment, learn, and continuously improve how things are built. Senior Backend Developer - Key Requirements: Strong experience building Back End services using Python (or another modern Back End language) Solid grounding in software engineering fundamentals, including data structures, algorithms, and object-oriented design Experience designing, building, and maintaining scalable Back End systems Comfortable working with APIs, databases, and distributed systems Strong problem-solving skills and a pragmatic approach to debugging and refactoring Experience working with version control, testing practices, and code reviews Product-minded - able to think beyond the code and understand real user impact Experience working in fast-paced environments with evolving requirements Collaborative communicator who enjoys working closely with engineers, product, and design Senior Backend Developer - Salary & Benefits: Basic salary up to £100k Bonus and/or share options Private medical insurance Generous holiday allowance Flexible hybrid working model Learning & development budget Strong wellbeing benefits and additional perks If you're a Senior Backend Developer looking for a role where you can focus on fundamentals, build meaningful products, and grow alongside a scaling tech business with serious investment behind it, this is a strong opportunity. We are an equal opportunities employer and welcome applications from all suitably qualified candidates, regardless of race, sex, disability, religion/belief, sexual orientation, or age.
Senior Software Engineer / Developer (Full Stack JavaScript) London to £100k Opportunity to progress your career in a senior, hands-on Software Engineer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes and delivering CO2 carbon neutral targets, the company has been established 10 years, with recent funding of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Software Engineer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You'll work across the full tech stack using JavaScript and Vue.js on the front end, there's a range of other tech in the stack (TypeScript, Node.js, Java, Python and of course a bit of legacy PHP!), you'll be encouraged to explore new technologies and use the best tool for the job as well as own your own DevOps and deployment. There's an emphasis on getting stuff done and immediate business impact, alongside longer term strategy. Location / WFH: There's a hybrid work from home model with three days a week in the Hammersmith office and the other two work from home. When in the office you can enjoy the onsite gym, barista coffee and free breakfast. About you: You have strong full stack JavaScript development skills and are happy to work on projects that could be weighted either way or a 50/50 split You have experience with JavaScript frameworks they use Vue.js but Angular or React experience is fine, you will also have experience with Python, Node.js and TypeScript You're product focussed with good business acumen You have a good knowledge of APIs and an indepth understanding of web development practices, tools and technologies You enjoy learning and picking up new things You're flexible and able to adapt to changing priorities You have full software development lifecycle experience including CI/CD and testing You're collaborative with Agile team experience, happy to mentor more junior developers You're likely to be degree educated in Computer Science or similar tech discipline What's in it for you: As a Senior Software Engineer you will receive a competitive package: Salary to £100k 25 days holiday (increasing to 30), plus Christmas Eve Vitality healthcare plus a host of wellbeing benefits Pension Family leave and enhanced maternity scheme Continual career and self development opportunities Onsite gym, and partnership with Octopus Electric Vehicles and Evans Cycle to Work scheme, there's showers and towels if you do decide to cycle! Apply now to find out more about this Senior Software Engineer (Full Stack JavaScript) 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 all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.
03/10/2025
Full time
Senior Software Engineer / Developer (Full Stack JavaScript) London to £100k Opportunity to progress your career in a senior, hands-on Software Engineer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes and delivering CO2 carbon neutral targets, the company has been established 10 years, with recent funding of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Software Engineer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You'll work across the full tech stack using JavaScript and Vue.js on the front end, there's a range of other tech in the stack (TypeScript, Node.js, Java, Python and of course a bit of legacy PHP!), you'll be encouraged to explore new technologies and use the best tool for the job as well as own your own DevOps and deployment. There's an emphasis on getting stuff done and immediate business impact, alongside longer term strategy. Location / WFH: There's a hybrid work from home model with three days a week in the Hammersmith office and the other two work from home. When in the office you can enjoy the onsite gym, barista coffee and free breakfast. About you: You have strong full stack JavaScript development skills and are happy to work on projects that could be weighted either way or a 50/50 split You have experience with JavaScript frameworks they use Vue.js but Angular or React experience is fine, you will also have experience with Python, Node.js and TypeScript You're product focussed with good business acumen You have a good knowledge of APIs and an indepth understanding of web development practices, tools and technologies You enjoy learning and picking up new things You're flexible and able to adapt to changing priorities You have full software development lifecycle experience including CI/CD and testing You're collaborative with Agile team experience, happy to mentor more junior developers You're likely to be degree educated in Computer Science or similar tech discipline What's in it for you: As a Senior Software Engineer you will receive a competitive package: Salary to £100k 25 days holiday (increasing to 30), plus Christmas Eve Vitality healthcare plus a host of wellbeing benefits Pension Family leave and enhanced maternity scheme Continual career and self development opportunities Onsite gym, and partnership with Octopus Electric Vehicles and Evans Cycle to Work scheme, there's showers and towels if you do decide to cycle! Apply now to find out more about this Senior Software Engineer (Full Stack JavaScript) 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 all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.
Fully Remote| Senior AWS Site Reliability engineer| £80k-£100k Your new company Created in 2012, this exciting London based Fintech Company has a unique value proposition of enabling and empowering financial institutions to take their problem-solving abilities to the next level, further aligning with the rapid development of technology within businesses. Not only will you be working in the Heart of the City of London, but you will also be part of a rapidly growing Fintech company that has been ranked within the top 100 influential Companies to work alongside financial institutions. Your new role You will be a crucial senior engineer working on mission critical functions within the operations team. You must have an immense passion for technology and automation. A resilient approach and a problem-solving mind when dealing with complex problems are all essential. You will be working alongside seasoned professionals in a high-intensity team environment. Your day to day will be diverse and consists of: Designing and innovating and developing a wide range of key systems including improving the CI/CD Process. Monitoring and maintaining a 100% cloud environment (AWS) Create, secure, reliable, repeatable production rollouts. Communicating ideas and decisions throughout the team Ensuring that tasks are owned and fully completed with high quality Working with multiple business units to gather requirements and collaboratively build solutions Ongoing maintenance and upgrades on key components of the platform What you'll need to succeed Excellent knowledge and practical skills regarding AWS (Monitoring and maintaining) Excellent Linux/ Unix Administration skills- requires networking and scripting Experience using one or more of the following Ansible Puppet Chef Salt Excellent teamwork and strong Communication skills. Understanding AWS, Google Cloud, Microsoft Azure or one of the other IaaS providers (Linode, Digital Ocean, OpenStack, VMWare, XEN) and using Terraform, CloudFormation, boto or other orchestration tools. Intrinsic interest and experience with development and scripting languages as Python, JavaScript, Java, C++, Bash Experience with software such as Git What you'll get in return You will be working an emerging fintech company whose state-of-the-art offices are in the heart of London. You will also be entitled to flexible working including a 100% remote if you would like it. An extremely competitive salary as well as other benefits such as subsides healthcare, dental, pension, 25 + days annual leave and a very competitive salary. What you need to do now Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at hays.co.uk
04/11/2021
Full time
Fully Remote| Senior AWS Site Reliability engineer| £80k-£100k Your new company Created in 2012, this exciting London based Fintech Company has a unique value proposition of enabling and empowering financial institutions to take their problem-solving abilities to the next level, further aligning with the rapid development of technology within businesses. Not only will you be working in the Heart of the City of London, but you will also be part of a rapidly growing Fintech company that has been ranked within the top 100 influential Companies to work alongside financial institutions. Your new role You will be a crucial senior engineer working on mission critical functions within the operations team. You must have an immense passion for technology and automation. A resilient approach and a problem-solving mind when dealing with complex problems are all essential. You will be working alongside seasoned professionals in a high-intensity team environment. Your day to day will be diverse and consists of: Designing and innovating and developing a wide range of key systems including improving the CI/CD Process. Monitoring and maintaining a 100% cloud environment (AWS) Create, secure, reliable, repeatable production rollouts. Communicating ideas and decisions throughout the team Ensuring that tasks are owned and fully completed with high quality Working with multiple business units to gather requirements and collaboratively build solutions Ongoing maintenance and upgrades on key components of the platform What you'll need to succeed Excellent knowledge and practical skills regarding AWS (Monitoring and maintaining) Excellent Linux/ Unix Administration skills- requires networking and scripting Experience using one or more of the following Ansible Puppet Chef Salt Excellent teamwork and strong Communication skills. Understanding AWS, Google Cloud, Microsoft Azure or one of the other IaaS providers (Linode, Digital Ocean, OpenStack, VMWare, XEN) and using Terraform, CloudFormation, boto or other orchestration tools. Intrinsic interest and experience with development and scripting languages as Python, JavaScript, Java, C++, Bash Experience with software such as Git What you'll get in return You will be working an emerging fintech company whose state-of-the-art offices are in the heart of London. You will also be entitled to flexible working including a 100% remote if you would like it. An extremely competitive salary as well as other benefits such as subsides healthcare, dental, pension, 25 + days annual leave and a very competitive salary. What you need to do now Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at hays.co.uk
Senior Infrastructure Engineer / DevOps (Cloud AWS Linux Python). Are you a technologist Infrastructure Engineer looking to progress your career in a lead role where you can make the tech decisions, drive best practice and work on complex and challenging systems? You could be joining a FinTech solutions provider as they expand their UK presence. As a Senior Infrastructure Engineer / DevOps you will design and architect cloud based systems and oversee the development of the infrastructure for the core trading product, which is offered to clients as either a hosted service or as a software product deployed to their own infrastructure. You'll focus on automating Cloud deployments (CI/CD), enhancing the monitoring capabilities, supporting live environments and will have oversight of Information Security related strategy such as administering privileges, addressing issues such as vulnerability scan findings and coordination of penetration testing. Driven by technology this company is able to offer a remote interview / onboarding process, with 1-2 days work from home per week going forward with the rest of your time in the City based offices. Requirements: *You have a broad understanding of Cloud Technologies, DevOps practices, Information Security and System Administration *You have a strong knowledge of Linux OS including Linux SysAdmin experience including terminal and bash scripts *You have strong Python coding skills *You have a strong understanding and experience with AWS - including architecture and design *You have a good knowledge of Information Security best practice *You have a good knowledge of deployment and automation technologies (e.g. Ansible, Chef, Terraform, CloudFormation) *You have a good understanding of networks and network security *You're collaborative, keen to lead and share knowledge As a Senior Infrastructure Engineer / DevOps you will earn a competitive salary (to £100k) plus bonus and benefits. Apply now or call to find out more about this Senior Infrastructure Engineer / DevOps (Cloud AWS Linux Python) opportunity.
14/09/2021
Full time
Senior Infrastructure Engineer / DevOps (Cloud AWS Linux Python). Are you a technologist Infrastructure Engineer looking to progress your career in a lead role where you can make the tech decisions, drive best practice and work on complex and challenging systems? You could be joining a FinTech solutions provider as they expand their UK presence. As a Senior Infrastructure Engineer / DevOps you will design and architect cloud based systems and oversee the development of the infrastructure for the core trading product, which is offered to clients as either a hosted service or as a software product deployed to their own infrastructure. You'll focus on automating Cloud deployments (CI/CD), enhancing the monitoring capabilities, supporting live environments and will have oversight of Information Security related strategy such as administering privileges, addressing issues such as vulnerability scan findings and coordination of penetration testing. Driven by technology this company is able to offer a remote interview / onboarding process, with 1-2 days work from home per week going forward with the rest of your time in the City based offices. Requirements: *You have a broad understanding of Cloud Technologies, DevOps practices, Information Security and System Administration *You have a strong knowledge of Linux OS including Linux SysAdmin experience including terminal and bash scripts *You have strong Python coding skills *You have a strong understanding and experience with AWS - including architecture and design *You have a good knowledge of Information Security best practice *You have a good knowledge of deployment and automation technologies (e.g. Ansible, Chef, Terraform, CloudFormation) *You have a good understanding of networks and network security *You're collaborative, keen to lead and share knowledge As a Senior Infrastructure Engineer / DevOps you will earn a competitive salary (to £100k) plus bonus and benefits. Apply now or call to find out more about this Senior Infrastructure Engineer / DevOps (Cloud AWS Linux Python) opportunity.
