76 to 100 of 157 Data Structures Jobs in the City of London

strategy research and prototype development Manage and mentor junior developers, ensuring high coding and testing standards Requirements 4–5 years of Python development experience in trading, finance, or other data-heavy environments Proven experience building back-testing systems , APIs , or automation pipelines Strong understanding of data structures, algorithms, and software engineering best practices Track record of designing More ❯

a rapidly expanding scale-up software house that is developing a highly complex network cyber security platform; the platform monitors network protocols in real-time, parses the commands and data structures to extract key metadata which is then analysed by in-house algorithms and allows customers to detect hackers, malware, data leakage and other malicious activity. As More ❯

distributed, high-throughput systems. Conduct research to enhance optimisation frameworks and algorithm performance. Required Experience Strong foundation in mathematics, optimisation, or operations research. Demonstrated Python engineering skills (OOP, algorithms, data structures). Ability to transform theoretical models into practical solutions. Strong communication and teamwork skills. Preferred Experience MSc/PhD in a quantitative discipline. Experience with optimisation frameworks More ❯

distributed, high-throughput systems. Conduct research to enhance optimisation frameworks and algorithm performance. Required Experience Strong foundation in mathematics, optimisation, or operations research. Demonstrated Python engineering skills (OOP, algorithms, data structures). Ability to transform theoretical models into practical solutions. Strong communication and teamwork skills. Preferred Experience MSc/PhD in a quantitative discipline. Experience with optimisation frameworks More ❯

joining a global technology company whose platform helps major manufacturers design and build products smarter and faster. Their technology simulates real-world production before anything is made - giving customers data-driven insights on cost, efficiency, and design. Now, the focus is shifting to the next big leap: embedding AI and Generative AI directly into that platform. That's where … GCP Vertex AI to deliver scalable cloud-based systems. Implementing strong MLOps and LLMOps practices - from CI/CD and model monitoring to cost and performance optimisation. Partnering with Data Engineers to ensure the pipelines and data structures feeding the models are robust and scalable. Keeping an eye on what's next - new GenAI frameworks, model safety … LangChain or similar orchestration frameworks. A solid understanding of MLOps and how to take models from concept to production. A collaborative mindset - you enjoy working closely with Product and Data teams and mentoring others when needed. Curiosity, experimentation, and a practical streak - someone who likes building things that work. Why This Role? You'll have genuine influence in shaping More ❯

joining a global technology company whose platform helps major manufacturers design and build products smarter and faster. Their technology simulates real-world production before anything is made - giving customers data-driven insights on cost, efficiency, and design. Now, the focus is shifting to the next big leap: embedding AI and Generative AI directly into that platform. That's where … GCP Vertex AI to deliver scalable cloud-based systems. Implementing strong MLOps and LLMOps practices - from CI/CD and model monitoring to cost and performance optimisation. Partnering with Data Engineers to ensure the pipelines and data structures feeding the models are robust and scalable. Keeping an eye on what's next - new GenAI frameworks, model safety … LangChain or similar orchestration frameworks. A solid understanding of MLOps and how to take models from concept to production. A collaborative mindset - you enjoy working closely with Product and Data teams and mentoring others when needed. Curiosity, experimentation, and a practical streak - someone who likes building things that work. Why This Role? You'll have genuine influence in shaping More ❯

architecture. Develop robust, maintainable software with strong versioning, caching, and execution environments. Collaborate with structurers, traders, and quant teams to deliver high-impact solutions. Build tooling to support market data access and AI-enhanced user experiences. Requirements 3-10 years of experience building production-grade software. Proficiency in Python and at least one other language (e.g., Rust, Haskell, etc. … . Experience building and maintaining long-term software projects. Strong Computer Science fundamentals (algorithms, data structures, design principles). An advanced degree in Computer Science, or related degrees (optional, but preferred). Exposure to greenfield projects and experience scaling them up (optional, but preferred). More ❯

architecture. Develop robust, maintainable software with strong versioning, caching, and execution environments. Collaborate with structurers, traders, and quant teams to deliver high-impact solutions. Build tooling to support market data access and AI-enhanced user experiences. Requirements 3-10 years of experience building production-grade software. Proficiency in Python and at least one other language (e.g., Rust, Haskell, etc. … . Experience building and maintaining long-term software projects. Strong Computer Science fundamentals (algorithms, data structures, design principles). An advanced degree in Computer Science, or related degrees (optional, but preferred). Exposure to greenfield projects and experience scaling them up (optional, but preferred). More ❯

accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven systems that empower venues to deliver seamless guest experiences and drive long-term innovation. What will I be doing? Lead the technical vision and architectural direction across complex … Django, Cloud Firestore, BigQuery, and Elasticsearch. Mentor and guide engineers at all levels, fostering a culture of technical excellence and continuous improvement. Collaborate with cross-functional teams - including product, data, and design - to deliver innovative solutions that directly impact customer success. Evaluate and implement emerging technologies that enhance system performance and developer productivity. Take ownership of mission-critical initiatives … proven experience designing distributed systems, APIs, and microservices at scale. Deep understanding of software architecture, cloud infrastructure (Google Cloud, AWS, or Azure), and modern DevOps practices. Strong knowledge of data structures, algorithms, and system design principles. Demonstrated experience influencing technical direction across teams and driving alignment on complex engineering decisions. Passion for delivering elegant, high-performance software and More ❯

accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven systems that empower venues to deliver seamless guest experiences and drive long-term innovation. What will I be doing? Lead the technical vision and architectural direction across complex … Django, Cloud Firestore, BigQuery, and Elasticsearch. Mentor and guide engineers at all levels, fostering a culture of technical excellence and continuous improvement. Collaborate with cross-functional teams - including product, data, and design - to deliver innovative solutions that directly impact customer success. Evaluate and implement emerging technologies that enhance system performance and developer productivity. Take ownership of mission-critical initiatives … proven experience designing distributed systems, APIs, and microservices at scale. Deep understanding of software architecture, cloud infrastructure (Google Cloud, AWS, or Azure), and modern DevOps practices. Strong knowledge of data structures, algorithms, and system design principles. Demonstrated experience influencing technical direction across teams and driving alignment on complex engineering decisions. Passion for delivering elegant, high-performance software and More ❯

for machining operations. You will work on problems such as toolpath optimization, cutting strategy selection, and the automation of complex CAM tasks. Collaboration with specialists across software engineering, manufacturing, data science, and research will be central to this work. This position suits someone who enjoys experimental development, problem-solving, and building practical solutions from theoretical ideas. You should be … concepts. What Youll Need Strong proficiency in C++ , focusing on clear, efficient, and maintainable code. Experience designing and implementing algorithms, ideally involving geometric or numerical computation. Solid understanding of data structures, algorithmic performance, and runtime considerations. Ability to collaborate effectively with a multidisciplinary engineering team. Clear communication skills and the ability to explain complex technical topics. Degree or More ❯

moving environment, developing scalable backend services that power large-scale digital platforms, giving you the opportunity to sharpen your technical skills while gaining broad exposure across modern cloud and data ecosystems. In this role, you’ll gain exposure to: A wide variety of projects – from greenfield builds to large-scale platform modernisation Modern technologies and cloud-native tools including … creative problem-solving The ideal Backend Developer – Python will have: Proven experience building and maintaining scalable backend systems using Python (any major framework) Solid knowledge of databases, OO design, data structures, and SOLID principles A proactive, analytical mindset and enthusiasm for exploring new technologies Experience working within Agile development environments Strong communication skills and a collaborative approach What More ❯

moving environment, developing scalable backend services that power large-scale digital platforms, giving you the opportunity to sharpen your technical skills while gaining broad exposure across modern cloud and data ecosystems. In this role, you’ll gain exposure to: A wide variety of projects – from greenfield builds to large-scale platform modernisation Modern technologies and cloud-native tools including … creative problem-solving The ideal Backend Developer – Python will have: Proven experience building and maintaining scalable backend systems using Python (any major framework) Solid knowledge of databases, OO design, data structures, and SOLID principles A proactive, analytical mindset and enthusiasm for exploring new technologies Experience working within Agile development environments Strong communication skills and a collaborative approach What More ❯

is a travel-focused ad tech platform built for scale, precision, and impact. Following our recent Series A funding round, we're evolving from a digital consultancy into a data-driven advertising platform that sits at the intersection of travel intelligence and multi-channel media execution. We ingest second-party data from leading travel companies—OTAs, airlines, and … metasearch platforms—segment audiences using multiple criteria across all our data partners, then syndicate those audiences across every major advertising platform. Wherever our clients' travellers are, we have a way of reaching them. We're building toward an "agentic advertising" future where AI-driven automation handles execution with expert human-in-the-loop decision making. This is an opportunity … just push buttons. Responsibilities Execute and optimise paid media campaigns across Meta Ads, Google Ads (Search, Display, YouTube), TikTok, and DV360 Build, troubleshoot, and manage custom audience segments using data from multiple partners with varying taxonomies and data structures Monitor campaign pacing, delivery, and performance against client KPIs (ROAS, CPA, CAC, LTV) Identify opportunities to scale budgets More ❯

is a travel-focused ad tech platform built for scale, precision, and impact. Following our recent Series A funding round, we're evolving from a digital consultancy into a data-driven advertising platform that sits at the intersection of travel intelligence and multi-channel media execution. We ingest second-party data from leading travel companies—OTAs, airlines, and … metasearch platforms—segment audiences using multiple criteria across all our data partners, then syndicate those audiences across every major advertising platform. Wherever our clients' travellers are, we have a way of reaching them. We're building toward an "agentic advertising" future where AI-driven automation handles execution with expert human-in-the-loop decision making. This is an opportunity … just push buttons. Responsibilities Execute and optimise paid media campaigns across Meta Ads, Google Ads (Search, Display, YouTube), TikTok, and DV360 Build, troubleshoot, and manage custom audience segments using data from multiple partners with varying taxonomies and data structures Monitor campaign pacing, delivery, and performance against client KPIs (ROAS, CPA, CAC, LTV) Identify opportunities to scale budgets More ❯

orchestration consultancy working at the forefront of public-sector modernisation. This fast-growing company delivers secure, cloud-native software solutions that transform how government and national security organisations manage data, automate processes, and deliver critical services. They’re now looking for Full Stack Developers (from early-career engineers to experienced senior developers) to join their expanding delivery team. You … a strong focus on scalability and resilience Work with modern technologies including Kubernetes , AWS , and Azure Contribute to workflow and orchestration solutions using Camunda and BPMN Design and optimise data structures and queries in PostgreSQL and MongoDB Collaborate closely with business consultants, product owners, and architects to translate complex requirements into elegant, secure software solutions Support the implementation More ❯

orchestration consultancy working at the forefront of public-sector modernisation. This fast-growing company delivers secure, cloud-native software solutions that transform how government and national security organisations manage data, automate processes, and deliver critical services. They’re now looking for Full Stack Developers (from early-career engineers to experienced senior developers) to join their expanding delivery team. You … a strong focus on scalability and resilience Work with modern technologies including Kubernetes , AWS , and Azure Contribute to workflow and orchestration solutions using Camunda and BPMN Design and optimise data structures and queries in PostgreSQL and MongoDB Collaborate closely with business consultants, product owners, and architects to translate complex requirements into elegant, secure software solutions Support the implementation More ❯

partners to turn new primitives into production systems that handle high usage. Responsibilities Lead architecture and delivery of core services across networking, consensus and execution, tokenization, exchange, settlement, and data pipelines Design, implement, and operate high-performance services in C++, Rust, Go, or Solidity Profile and optimize systems for throughput, tail latency, memory, storage, and network efficiency Build correctness … technical field, or equivalent practical experience 7+ years of systems programming experience working with at least one of these languages (C++, Rust, Go, Solidity) Deep understanding of distributed systems, data structures, algorithms, and software design Experience building performant, large-scale, low-latency applications Experience in compiler implementation, runtimes, optimization, or static analysis Familiarity with modern software development practices More ❯

partners to turn new primitives into production systems that handle high usage. Responsibilities Lead architecture and delivery of core services across networking, consensus and execution, tokenization, exchange, settlement, and data pipelines Design, implement, and operate high-performance services in C++, Rust, Go, or Solidity Profile and optimize systems for throughput, tail latency, memory, storage, and network efficiency Build correctness … technical field, or equivalent practical experience 7+ years of systems programming experience working with at least one of these languages (C++, Rust, Go, Solidity) Deep understanding of distributed systems, data structures, algorithms, and software design Experience building performant, large-scale, low-latency applications Experience in compiler implementation, runtimes, optimization, or static analysis Familiarity with modern software development practices More ❯

a rapidly expanding scale-up software house that is developing a highly complex network cyber security platform; the platform monitors network protocols in real-time, parses the commands and data structures to extract key metadata which is then analysed by in-house algorithms and allows customers to detect hackers, malware, data leakage and other malicious activity. As More ❯

Science, Mathematics, Physics, Engineering, or a similar field 5+ years of hands-on experience developing Java applications in a financial services environment (Java 21) Excellent knowledge in algorithms and data structures, object-oriented design, and microservices architecture (This will be tested) Proven record of complex software delivery in the Interest Rates domain Excellent Java 21, Spring Boot, strong More ❯

Science, Mathematics, Physics, Engineering, or a similar field 5+ years of hands-on experience developing Java applications in a financial services environment (Java 21) Excellent knowledge in algorithms and data structures, object-oriented design, and microservices architecture (This will be tested) Proven record of complex software delivery in the Interest Rates domain Excellent Java 21, Spring Boot, strong More ❯

you will have knowledge of J2SE programming, understanding of web architectures and databases. Your knowledge/experience in Java will include software design principles and familiarity with algorithms and data structures. What experience you'll have ● Database knowledge (SQL, schema design) ● Java ● Some knowledge of JavaScript and Node.js ● HTTP ● Json ● Web Development ● Proactive attitude ● Ability to own projects, work … both independently and in a team, with rapidly changing priorities ● Core knowledge of algorithms and data structures ● Understanding of common OO design patterns ● Understanding of automation through Selenium, Puppeteer or similar What you might have in addition ● Computer Science background or degree ● Commercial core Java experience ● Experience of working in a fast paced startup environment ● Database experience (hibernate More ❯

you will have knowledge of J2SE programming, understanding of web architectures and databases. Your knowledge/experience in Java will include software design principles and familiarity with algorithms and data structures. What experience you'll have Database knowledge (SQL, schema design) Java Some knowledge of JavaScript and Node.js HTTP Json Web Development Proactive attitude Ability to own projects, work … both independently and in a team, with rapidly changing priorities Core knowledge of algorithms and data structures Understanding of common OO design patterns Understanding of automation through Selenium, Puppeteer or similar What you might have in addition Computer Science background or degree Commercial core Java experience Experience of working in a fast paced startup environment Database experience (hibernate More ❯

big tech, or AI-driven products often thrive here due to the performance, scalability, and reliability challenges involved. We’re looking for someone who: Has strong computer science fundamentals (data structures, algorithms, and system design), you will be tested . Is motivated to work hard at a fast-growing AI start-up. Excels at solving complex problems with … minimal guidance. Brings a strong sense of ownership, urgency, and adaptability. Nice to Haves: Understanding of microservices architecture and event-driven distributed systems. Familiarity with machine learning, NLP, or data-intensive systems. Experience with AWS or other cloud platforms. Why Join Growth and impact. Joining at this stage means shaping the foundation of a rapidly scaling AI company. You More ❯