1 to 25 of 123 Permanent Client/Server Jobs in London with Remote Work Options

C, preferably have experience with projects have mixed Objective-c and Swift Experience migrating Objective-C projects to Swift Experience developing client / server / web interactions Experience with third-party libraries and APIs Experience with agile development methodologies Experience with continuous integration Nice … to Haves: App Store application publishing Telephony / Network API's SQL / SQLite database VOIP application frameworks What you can expect: At Global Relay, there's no ceiling to what you can achieve. It's the land of opportunity for the energetic, the intelligent, the driven. You … in our work culture. Whether it's flexibility around work hours, workstyle, or lifestyle, we want to ensure our employees have a healthy work / life balance. We support and value a hybrid work model that blends collaboration with the team in the office and focus time from the more »

of third-party suppliers and systems. Manage the Cyber Essentials, GovAssure and ISO27001 annual accreditation processes. We are looking for: Understanding of:  Windows, client & server  IAAS, PAAS especially Azure  Firewalls  Networking & Wi-Fi  End-point protection  Web-hosting technology Demonstrable understanding of ISO27001, Cyber Essentials, data more »

Software Engineer / Developer (Elixir Elm TypeScript AWS) London / WFH to £85k Do you enjoy problem solving and working with a range of technologies including functional programming languages? You could be progressing your career in a senior, hands-on Software Engineer role at a successful, profitable energy … full development lifecycle from architecture and design through to implementation. There's a range of technology in the stack, you'll have a 70 / 30 split between backend and frontend development using Elixir, Elm, TypeScript and AWS amongst others. Location / WFH: You'll join the team … PostgreSQL, AWS, Docker You are degree educated in Computer Science or similar STEM discipline, having achieved a 2.1 or above from a Russel Group / Oxbridge university Ideally you will have a good understanding of financial markets What's in it for you: Competitive salary, to £85k Equity Hybrid more »

Data Developer / Software Engineer (C# .Net F# SQL Data) London to £140k+ Are you a Data Developer with .Net expertise? You could be working on complex and interesting real-time systematic trading systems, with complex problem solving and continual learning and self-development opportunities at a Swiss based … sources into the back test and execution platforms. All the technology is proprietary with a focus on writing computational, efficient low latency code. Location / WFH: You'll join accomplished colleagues in the London office with flexibility to work from home one day a week (there are also flexible … other relevant discipline, having gained a 2.1 or above from a top tier university What's in it for you: As a Data Developer / Software Engineer you will earn a competitive package: Salary to £140k Bonus (c25%), discretionary 26 days holiday (in addition to Bank Holidays) Pension Interesting more »

Java Developer / Backend Software Engineer (Java Kotlin AWS) *Hybrid WFH* to £85k Are you a Java Developer with strong backend development skills? You could be progressing your career working on a financial Tech for Good product in a hands-on role at a scale-up software house. The … learn and use a range of programming languages You're likely to be degree educated, Computer Science preferred Salary & benefits: As a Java Developer / Backend Software Engineer you will earn a competitive salary (to £85k) plus a comprehensive benefits package including: Pension Private healthcare Life Assurance and Income … Protection Tax free childcare Apply now to find out more about this Java Developer / Backend Software Engineer (Java Kotlin AWS) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an more »

C# Developer / Team Lead (C# .Net Core Full Stack) London / WFH to £100k Do you have strong technical knowledge combined with leadership and people management skills? You could be joining a growing FinTech that provide trading platforms to a range of finance professionals. As a C# … Developer / Team Lead you'll head up two product aligned Agile software development teams (c15 people), supporting and coaching them to make high level architectural decisions and design choices whilst ensuring technical standards, tooling and implementation. You'll collaborate with Product Owners to create technology solutions that meet … seek to identify areas for business process improvement through technology and help to implement change in an influential role that could quickly progress. Location / WFH: You can work from home most of the time, joining the team in the office around once a fortnight (or more often if more »

C# Developer / Team Lead (C# .Net Core Full Stack) London / WFH to £100k Do you have strong technical knowledge combined with leadership and people management skills? You could be joining a growing FinTech that provide trading platforms to a range of finance professionals. As a C# … Developer / Team Lead you'll head up two product aligned Agile software development teams (c15 people), supporting and coaching them to make high level architectural decisions and design choices whilst ensuring technical standards, tooling and implementation. You'll collaborate with Product Owners to create technology solutions that meet … seek to identify areas for business process improvement through technology and help to implement change in an influential role that could quickly progress. Location / WFH: You can work from home most of the time, joining the team in the office around once a fortnight (or more often if more »

Senior Data Scientist (Python Real-time Data) London / WFH to £95k Hugely successful, profitable energy trading market data start-up is seeking a talented Senior Data Scientist to join their growing team. This is an excellent opportunity to join a well-funded company that have secured relationships with … Matter Expertise to the CTO and CEO. You'll endeavour to make improvements and enhance the role of Data Science across the business. Location / WFH: You'll be able to work from home most of the time, meeting up with colleagues in the London office 1-2 days … to deliver data products to market You have an academic record of achievement, 2.1 or above from a top tier university at BSc, MSC / PhD not required but highly regarded What's in it for you: Competitive salary, to £95k Stock options Hybrid working (1-2 days London more »

Graduate Penetration Tester (Red Team) Hybrid WFH to £60k Do you have an academic record of achievement combined with an interest in Cyber Security / Penetration Testing? You could be progressing your career as a Penetration Tester at a rapidly expanding scale-up software house that is developing a … Team testing to try anything and everything to outmanoeuvre the defenders and gain access to customer networks. WFH Policy: There's a remote interview / onboarding process and the ability to work from home for the majority of the time with only occasional visits to the London, City offices … i.e. 2-3 times a month). Requirements: You're degree educated, having achieved a 2.1 or above from a Red Brick / Russel Group, top tier university - Computer Science, Engineering, Physics or Mathematics; MSc or PhD advantageous You have commercial experience with Penetration testing, Offensive Security, Red Team more »

Implementation Consultant (Python) London / WFH to £75k Do you have Python coding experience combined with client facing skills? You could be progressing your career at a global FinTech consistently voted as a Top 10 place to work, they invest in their people, you'll be supported … trading coding and manage feature requests. This is a varied role with lots of business exposure where you can make a positive impact. Location / WFH: You can work from home most of the time, meeting up with colleagues 2-3 days a week in the City offices, when … of facilities including large kitchen, café and all the latest kit to work on. About you: You are tech savvy with strong customer service / client facing skills You have strong Python coding skills You have experience of working in a Commodities trading environment (will consider other more »

Backend Software Engineer / Developer (Golang AWS REST API) London / WFH to £75k Are you a technologist who enjoys using a range of languages whilst continually learning? You could be progressing your career at a successful and growing Cyber Security Risk Management tech company, working on complex … Engineering team with a focus on building microservices. You'll have exposure to a range of technology, with a focus on Python and Go / Golang within a serverless AWS architecture. You'll be collaborating and problem solving as part of a small, flexible engineering team where knowledge sharing … and continuous improvement are key. Location / WFH: You'll join the team in the London office three days a week with flexibility to work from home the other two. About you: You have backend development experience, happy to use Go / Golang but could also be from more »

Software Developer / Engineer (.Net F# C#) London to £140k+ Do you have expertise with .Net? You could be working on complex and interesting real-time systematic trading systems, with complex problem solving and continual learning and self-development opportunities at a Swiss based Asset Manager that is expanding … new instruments and venues, developing new trading capabilities, all the technology is proprietary with a focus on writing computational, efficient low latency code. Location / WFH: You'll join accomplished colleagues in the London office with flexibility to work from home one day a week (there are also flexible … other relevant discipline, having gained a 2.1 or above from a top tier university What's in it for you: As a Software Developer / Engineer you will earn a competitive package: Salary to £140k Bonus (c25%), discretionary 26 days holiday (in addition to Bank Holidays) Pension Interesting work more »

Back End Developer / Engineer (C# .Net 6 AWS) London to £65k Are you a C# technologist who enjoys contributing to technical discussions and using the best tool for the job? You could be progressing your career at a global, financial Market Data provider. As a Back End Developer … large scale data processing and will be able to assess and recommend new and emerging technologies, using the best tool for the job. Location / WFH: You'll join colleagues in the City office three days a week with flexibility to work from home the other two days. About … a good understanding of SOLID, DRY or KISS Design Principles You have SQL experience You have a good understanding of AWS (or Azure), CI / CD and Infrastructure as Code (Terraform) You're familiar with other languages such as Java and are open to learning new things e.g. Apache more »

Job DescriptionSenior Software Engineer / Developer (Go / Golang AWS) London / WFH to £100kAre you a technologist, backend focussed, Software Engineer looking for an opportunity to work on complex and interesting systems at the cutting edge of technology?You could be progressing your career in a … take a lead role in the Product Engineering team working on the development of websites, APIs and efficient database queries. As well as Go / Golang you'll be working with TypeScript, Node.js and serverless AWS with a focus on backend development.You'll be collaborating and problem solving as … part of a small, flexible engineering team where knowledge sharing and continuous improvement are key.Location / WFH:You'll join the team in the London office three days a week with flexibility to work from home the other two.About you:You're a senior software engineer with a strong more »

Job DescriptionSenior C++ Developer / Software Engineer London / WFH to £300k+Are you a C++ technologist with low latency and cryptocurrency exchange experience?You could be progressing your career in a senior, hands-on role at a global systematic trading firm.As a Senior C++ Developer you will design … of trading systems.There are many complex technical challenges, you'll be collaborating with a highly talented to solve problems and push what is possible.Location / WFH:You'll join colleagues based in high spec offices with free breakfast and lunch at the onsite restaurant, with flexibility to work from … fundamentals such as OOP, Design Patterns, Data StructuresYou're collaborative with excellent communication skillsWhat's in it for you:As a Senior C++ Developer / Software Engineer you will earn a competitive package:Salary to £300kSignificant BonusPensionPrivate Healthcare25 days holidayOpportunity to work on Greenfield systems at the cuttingContinual learning more »

Job DescriptionSenior Software Engineer / Developer (C# .Net 6 AWS) London to £85kAre you a technologist who enjoys contributing to technical discussions and using the best tool for the job? You could be progressing your career at a global, financial Market Data provider whilst enjoying a range of perks … for large scale data processing and will be able to assess and recommend new and emerging technologies, using the best tool for the job.Location / WFH: You'll join colleagues in the City office three days a week with flexibility to work from home the other two days.About you … latency and scalability and understand the challenges involvedYou have strong analysis and problem, solving skillsYou have SQL experienceYou have a good understanding of CI / CD and Infrastructure as Code (Terraform)You're familiar with other languages such as Java and are open to learn new thingsYou're collaborative more »

Job DescriptionBack End Developer / Engineer (C# .Net 6 AWS) London to £65kAre you a C# technologist who enjoys contributing to technical discussions and using the best tool for the job? You could be progressing your career at a global, financial Market Data provider.As a Back End Developer you … for large scale data processing and will be able to assess and recommend new and emerging technologies, using the best tool for the job.Location / WFH: You'll join colleagues in the City office three days a week with flexibility to work from home the other two days.About you … skills and a good understanding of SOLID, DRY or KISS Design PrinciplesYou have SQL experienceYou have a good understanding of AWS (or Azure), CI / CD and Infrastructure as Code (Terraform)You're familiar with other languages such as Java and are open to learning new things e.g. Apache more »

Job DescriptionQuantitative Developer (C++ Python) London / WFH to £300k+Are you a Quantitative Developer with strong C++ and Python skills?You could be progressing your career in a senior, hands-on role at a global systematic trading firm and earning significant bonuses.As a Quantitative Developer you will collaborate closely … with a particular trading desk / pod and have a direct impact on the team's success. There are many complex technical challenges, you'll be collaborating with a highly talented to solve problems and push what is possible; you'll wok on ultra-low latency algorithmic trading systems … tracking nanoseconds), the research platform which encompasses terabytes of data per day, analytics and cloud based infrastructure.Location / WFH:You'll join colleagues based in high spec offices with free breakfast and lunch at the onsite restaurant, with flexibility to work from home two days a week.About you:You more »

Quantitative Developer (C++ Python) London / WFH to £300k+ Are you a Quantitative Developer with strong C++ and Python skills? You could be progressing your career in a senior, hands-on role at a global systematic trading firm and earning significant bonuses. As a Quantitative Developer you will collaborate … closely with a particular trading desk / pod and have a direct impact on the team's success. There are many complex technical challenges, you'll be collaborating with a highly talented to solve problems and push what is possible; you'll wok on ultra-low latency algorithmic trading … systems (tracking nanoseconds), the research platform which encompasses terabytes of data per day, analytics and cloud based infrastructure. Location / WFH: You'll join colleagues based in high spec offices with free breakfast and lunch at the onsite restaurant, with flexibility to work from home two days a week. more »

Job DescriptionImplementation Consultant (Python) London / WFH to £75kDo you have Python coding experience combined with client facing skills?You could be progressing your career at a global FinTech consistently voted as a Top 10 place to work, they invest in their people, you'll be supported … algo trading coding and manage feature requests. This is a varied role with lots of business exposure where you can make a positive impact.Location / WFH:You can work from home most of the time, meeting up with colleagues 2-3 days a week in the City offices, when … range of facilities including large kitchen, café and all the latest kit to work on.About you:You are tech savvy with strong customer service / client facing skillsYou have strong Python coding skillsYou have experience of working in a Commodities trading environment (will consider other asset classes more »

Job DescriptionC++ Developer / Software Engineer (TMP C++ 20 / 23) London / WFH to £300k+Do you have expertise with C++ backend development, with experience of low latency trading systems?You could be progressing your career in a senior, hands-on role at a global systematic trading … of a small, Agile team that is embarking on building a new, low latency, trade execution system from scratch utilising modern C++ (C++ 20 / C++ 23) and Template Metaprogramming techniques.You'll be working across the full development lifecycle including design and architecture through to deployment, collaborating with a … edge trading systems.There are many complex technical challenges, you'll be collaborating with a highly talented to solve problems and push what is possible.Location / WFH:You have advanced C++ development skills including C++ 20, STL and BoostYou have experience of designing and implementing multithreaded and distributed systemsYou have more »

Senior C++ Developer / Software Engineer London / WFH to £300k+ Are you a C++ technologist with low latency and cryptocurrency exchange experience? You could be progressing your career in a senior, hands-on role at a global systematic trading firm. As a Senior C++ Developer you will … systems. There are many complex technical challenges, you'll be collaborating with a highly talented to solve problems and push what is possible. Location / WFH: You'll join colleagues based in high spec offices with free breakfast and lunch at the onsite restaurant, with flexibility to work from … as OOP, Design Patterns, Data Structures You're collaborative with excellent communication skills What's in it for you: As a Senior C++ Developer / Software Engineer you will earn a competitive package: Salary to £300k Significant Bonus Pension Private Healthcare 25 days holiday Opportunity to work on Greenfield more »

Job DescriptionPlatform Engineer / DevOps (GCP Terraform) London / WFH to £95kDo you have expertise with GCP? You could be working on complex and interesting systems that provide daily challenges, collaborating with a friendly and upbeat team and improving your skills via continual learning programmes whilst enjoying a … good work / life balance at one of the country's best known online property rental sites.As a Platform Engineer / DevOps you will join a small team to ensure the reliability and performance of the core platform encompassing everything from how code is built and tested; how … including architecture, security and Terraform, having used both in production environmentsYou have a strong knowledge of Linux, likely to be from a Sys Admin / Engineering backgroundYou have experience with Terraform for writing IaCYou have experience of building containers with Docker and a good knowledge of operating orchestration solutions more »

Job DescriptionSoftware Engineer / Developer (C / C++ Apple Mac) WFH / London to £70kDo you have C / C++ skills combined with Apple extension experience?You could be joining a hugely talented team at a rapidly expanding scale-up software house that is developing a … to detect hackers, malware, data leakage and other malicious activity.As a Software Engineer you will focus on enabling the core product, written in C / C++ for Windows and Linux to run on Apple Mac software, using the latest tools and API integrations.Location / WFH:You can work … the time, meeting up with colleagues in the London office once or twice a month.About you:You're a skilled Software Engineer with C / C++ development skillsYou have a strong knowledge of Network Security and EDR / EDTRYou have experience of integrating software with Apple Mac extensions more »

Job DescriptionSOC Manager / Lead London / WFH to £70kAre you an experienced SOC Manager / Lead with a strong knowledge of SIEM?You could be progressing you career in an impactful role at a tech company that provide cyber security products to a range of finance … government, defence, law enforcement and pharmaceutical companies.As a SOC Manager / Lead you'll play an integral role in ensuring the security and resilience of both internal and client based information systems. You'll provide subject matter expertise, selecting the appropriate SIEM platform and then once it … procedures and processes from the ground up, collaborating with senior stakeholders and other teams to drive adoption and quickly building a team around you.Location / WFH:You'll be joining a diverse, international team, working in a relaxed software house environment (i.e. non-corporate, casual dress, table football), in more »