City of London, London, United Kingdom Hybrid/Remote Options
Oho Group Ltd
have a direct impact every single day. The Role As a Senior Python Engineer , you’ll be a key part of a small, high-performing team building scalable backend systems and data-driven products. You’ll shape architecture decisions, drive engineering best practices, and collaborate across teams to deliver impactful features at speed. What You’ll Be Doing Designing … performance services in Python (FastAPI, Flask, or Django) Leading architecture discussions and mentoring junior engineers Collaborating with product, data, and design teams to bring ideas to life Building scalable systems in the cloud (AWS/GCP/Azure) Driving quality through automation, testing, and CI/CD About You 5+ years of hands-on Python engineering experience Strong grasp … of backend development, APIs, and distributedsystems Proven experience in fast-moving or high-growth startup environments Familiarity with cloud infrastructure and containerisation (Docker/Kubernetes) A problem-solver who thrives on autonomy and ownership What’s On Offer Fully remote role (UK/Europe timezone) Competitive salary + meaningful equity A chance to work with a world More ❯
Central London / West End, London, United Kingdom Hybrid/Remote Options
Oho Group Ltd
have a direct impact every single day. The Role As a Senior Python Engineer , you’ll be a key part of a small, high-performing team building scalable backend systems and data-driven products. You’ll shape architecture decisions, drive engineering best practices, and collaborate across teams to deliver impactful features at speed. What You’ll Be Doing Designing … performance services in Python (FastAPI, Flask, or Django) Leading architecture discussions and mentoring junior engineers Collaborating with product, data, and design teams to bring ideas to life Building scalable systems in the cloud (AWS/GCP/Azure) Driving quality through automation, testing, and CI/CD About You 5+ years of hands-on Python engineering experience Strong grasp … of backend development, APIs, and distributedsystems Proven experience in fast-moving or high-growth startup environments Familiarity with cloud infrastructure and containerisation (Docker/Kubernetes) A problem-solver who thrives on autonomy and ownership What’s On Offer Fully remote role (UK/Europe timezone) Competitive salary + meaningful equity A chance to work with a world More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Fruition Group
be creating, iterating, and solving genuine engineering challenges. You’ll collaborate closely with product and engineering teams across the stack to improve developer experience, strengthen observability, and troubleshoot complex distributed systems. A focus on clean, maintainable code, cloud infrastructure, and strong security practices is essential. Senior Platform Engineer – Key Skills & Experience: Solid background in software engineering, with significant platform … as Terraform Strong understanding of security best practices in application and infrastructure design Exposure to observability tools (e.g. Prometheus, Grafana, structured logging) Confident debugging and resolving issues in complex distributedsystems Product-oriented mindset with a collaborative approach to improving developer experience Bonus: experience with Kafka, gRPC, or contributing to open-source projects If you’re a Senior … Platform Engineer who thrives on building tools and systems that empower developers and accelerate delivery, apply today. The client is looking to move quickly. 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. More ❯
a Solution Architect, you will be responsible for designing end-to-end architectures for the migration of high-throughput, real-time applications from legacy environments to modern cloud and distributed platforms. You will define architectural standards, create migration blueprints, guide engineering teams, and ensure solutions meet strict performance, scalability, and resilience requirements. What You’ll Be Working On Designing … migration, cutover, and stabilisation phases Collaborating with global stakeholders and senior technical leaders What We’re Looking For Experienced Solution/Technical Architect with real-time or low-latency systems exposure Strong background in distributedsystems, messaging/streaming (Kafka, Solace, Tibco, 29West) Solid experience with cloud platforms (Azure/AWS), microservices, and Kubernetes Proven track record More ❯
Us: We’re a VC-backed stealth-mode company building behavioural AI solutions for the retail industry. Our platform is designed from the ground up — no legacy, no patchwork systems — just a clean slate and a clear vision. Our mission is to bring the intelligence of modern machine learning directly to the in-store shopping experience. Role: We’re … a backend designed for scale & flexibility. Responsibilities: Design and implement reactive, real-time web interfaces that help manage & redefine what is possible with in-store content personalisation Contribute to distributed, event-driven backend services connecting our web experience with information from remote devices and external data sources. Build and document APIs (OpenAPI/AsyncAPI) for mobile and web clients … with a variety of storage technologies (eg. Postgres, Mongo, Redis, Object) Experience with async and bi-directional communication protocols and patterns (eg. WebSockets, SSE) Designed and implemented event-driven distributedsystems (eg. Kafka/Pulsar, RabbitMQ, MQTT, or similar) Experience with container orchestration and service containerisation (Kubernetes, Docker) Built and deployed services on any major cloud providers' services More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Tech-Ninjas Consultants
teams delivering high-availability, cloud-hosted services across payments, identity, onboarding, lending, fraud and core banking. Define and evolve backend technical strategy, architecture, and engineering standards. Design and deliver distributed, event-driven and microservices-based solutions on public cloud. Ensure systems are observable, operable, performant, and straightforward to maintain. Drive a strong engineering culture around automated testing (unit … teams or 30+ engineers in a complex environment. Are still comfortable being hands-on as a backend engineer when needed. Are highly proficient in modern Java and experienced with distributedsystems and RESTful APIs. Understand cloud-native architectures and have strong experience with public cloud (ideally AWS). Are familiar with messaging/streaming technologies (e.g. Kafka, MQ … if you Have experience in regulated sectors (e.g. financial services, insurance, payments). Have deep experience with microservices at scale in production. Have strong AuthN/AuthZ experience in distributed systems. The environment Cloud-native microservices stack running on public cloud (AWS preferred). Modern Java ecosystem with strong focus on clean code and maintainability. Mission-critical, always-on More ❯
City of London, London, United Kingdom Hybrid/Remote Options
James Adams
culture that values clean code, collaboration, and innovation. You’ll be working with Java 11+ (preferably Java 21) , Spring , and Kafka , contributing to the design and delivery of resilient distributedsystems used at scale. The Role Design and build high-quality, scalable microservices in Java. Apply functional programming principles using Java or Kotlin. Work extensively with Java Streams … Java 21 . Deep knowledge of Spring , Kafka , and SQL/DBMS . Comfortable with functional programming concepts in Java or Kotlin. Proven background building cloud-native, microservice-based systems . Excellent communication skills and a collaborative mindset. Passion for writing clean, efficient, and testable code. The Offer Salary up to £100,000 (depending on experience). Hybrid working More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Vallum Associates Limited
Deep understanding of Azure services including Azure Functions, App Services, AKS, and Logic Apps Hands-on experience with Azure Cosmos DB including query optimisation and throughput management Familiarity with distributedsystems and NoSQL data modelling Experience with Git, version control, and continuous integration tools Desirable skills/knowledge/experience Advanced proficiency in C#, ASP.NET, and .NET Core More ❯
Python scripting and Docker for automation and containerization. Proven experience in setting up and managing Azure DevOps CI/CD pipelines. Solid understanding of build and deployment methodologies for distributed systems. Experience with enterprise-grade web applications and system integration. Strong knowledge of the Apigee platform or any APM (API Management) platform and its components. Ability to generate custom More ❯
City of London, London, United Kingdom Hybrid/Remote Options
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Senior Software Engineer – Trading Systems | Clean Energy | Remote | €85 + Bonus Ready to use your software skills to power the next generation of clean energy ? 🌍 This leading Greentech scale-up (backed by £250m+ in funding) is building trading and monitoring systems that optimise how clean energy is traded, stored, and delivered across global markets. They’re expanding their … engineer from another stack, they’ll give you 3–4 weeks to upskill – they hire for capability, not just code syntax. What you’ll be doing Designing automated trading systems for green energy markets Building real-time bidding, dispatch, and optimisation tools Developing data pipelines using Kafka & TimescaleDB Creating microservices that connect trading platforms and grid operators Building monitoring … dashboards for grid stability and energy storage operations What they’re looking for Strong software fundamentals — ideally Python , Rust is a bonus Experience with distributedsystems, REST APIs, and microservices Knowledge of Kafka (or similar), PostgreSQL , and time-series data Familiar with Docker, monitoring, and observability tools ✅ Experience in a startup or scale-up , collaborating closely with engineers More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Batonics AB
for leading funds and institutions across Asia, the U.S., and Europe. Our products deliver advanced market-microstructure analytics, backtesting, portfolio and risk tools, and formal verification for low-latency systems merging high-performance computing, AI, and frontier quantitative research. We have been almost doubling revenue every quarter, and need help on this exponential journey. We’re looking for a … part-time engineer to help develop end-to-end quantitative trading and research systems including high-frequency trading (HFT) platforms. Details : Part-time (with transition to fulltime) - flexible hours Remote work with occasional in-person meetings Competitive hourly pay initially, scaling with workload and contribution to full time, revenue share possible from day 1, equity options on the table … we both tackle a multi-tier coding challenge (AI tools allowed). Follow-up chat. Decision. Any of the below is a plus but not neccessary: High-performance database systems & transactional correctness (isolation/serializability) Real-time data pipelines & market-data processing (ultra-low latency, burst tolerance) Performance/latency optimization to sub-millisecond: CPU cache/NUMA, SIMD More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Fruition Group
Developer to join a leading technology business on a contract basis. This organisation is recognised for its engineering excellence and is seeking a Senior Go Developer to help scale distributedsystems and deliver high-performance solutions. In this role, the Senior Go Developer will design, develop, and implement data-intensive applications across the full engineering lifecycle. You’ll … architect and deliver microservices-based systems using Go (Golang), AWS, Kubernetes, Docker, and Kafka, working closely with cross-functional teams to build scalable, reliable, and resilient platforms. You’ll also play a key role in optimising system performance, improving reliability, and ensuring scalability, while contributing to code reviews, design discussions, and knowledge sharing across the engineering function. Senior Go More ❯
of the Role: To define and execute the operational strategy that underpins the firm’s growth, scalability, and resilience. This is a hands-on leadership position focused on guiding systems, processes, and people — not managing day-to-day tickets. Key Responsibilities: Lead the strategic operational roadmap , aligning it with long-term business goals. Oversee critical trading infrastructure , ensuring stability … functional collaboration during incidents and major system initiatives. Design and manage a robust operational risk framework across the trading lifecycle. Ideal Profile: 5+ years in trading operations, SRE, or systems leadership within quant/HFT/fintech firms. Expert-level skills in Linux/Unix , distributedsystems, and FIX protocol . Hands-on with IaC tools (Terraform More ❯
Job Title : Systems Engineer Our client, an innovative leader in broadcast engineering, is seeking a Systems Engineer for a pivotal role that combines deep technical expertise with forward-thinking design. You will be responsible for designing, building, and maintaining the complex, mission-critical infrastructure that powers their global transmission systems, ensuring the highest standards of broadcast excellence. … base by ensuring the high availability, scalability, and robust security of all systems. What's In It For You? Lead Critical Projects: You will take the lead on technical systems projects from concept through to deployment, working with cutting-edge broadcast technology and ensuring projects are delivered on schedule and within budget. Drive Technical Innovation: This role offers the … chance to design, develop, and implement complex, high-availability distributedsystems, giving you a platform to solve advanced challenges and shape the infrastructure of a growing company. High-Impact Environment: As a key member of a start-up, you will have the opportunity to mentor and collaborate with technology teams, directly influencing the engineering culture and resolving high More ❯
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Data Engineer | AI Startup | Real-Time Data & ML Pipelines I’m currently partnered with a next-generation AI startup that’s building real-time intelligence systems capable of understanding and adapting to the world as it happens. They’re at the forefront of streaming data, continuous learning, and large-scale inference - and they’re now looking for a Data … and platform teams to make sure the company’s AI models are learning, and improving, in production. 🧠 What You’ll Be Doing Architect and maintain real-time streaming data systems (Kafka, Kinesis, or Flink) Build robust feature pipelines using Airflow, Prefect, or Dagster Manage and optimise data storage solutions (Snowflake, BigQuery, Redshift, or Delta Lake) Automate and scale model …/Azure 🌍 What They’re Looking For Proven experience building scalable data pipelines in real-time or near real-time environments Strong background in data architecture, performance tuning, and distributedsystems Comfort working end-to-end - from data ingestion to model-ready outputs An interest in AI, ML ops, and data-driven product development Someone who thrives in More ❯
City of London, London, United Kingdom Hybrid/Remote Options
WeDo
rapidly scaling Series A DeepTech start-up that’s quickly earning a reputation for its AI-driven product, trusted by global customers. Their technology sits at the intersection of distributedsystems, AI/ML, and unstructured data helping organisations make sense of complex, multilingual information to deliver insights people can actually trust. This is a business solving genuinely … Ruby , and the platform is hosted on AWS (with migration to GCP underway). What You’ll Do Design and build scalable microservices in Go , contributing to a growing distributed architecture. Develop intuitive, performant React components that enhance the user experience. Collaborate with Product and Design teams to turn complex requirements into elegant technical solutions. Write clean, testable, and More ❯
on their models, while utilising the phenomenal scale and reliability of the world best ai cloud platform. The engineering team is small, ambitious, and deeply technical, building the orchestration systems that keep thousands of GPUs running at peak performance across global data centres. This role sits at the heart of it, designing and scaling the systems that make … high-performance GPU workloads. Developing automation for deployment, imaging, and multi-tenant resource allocation. Optimising scheduler performance and resource utilisation across diverse workloads. Building lifecycle management and automated remediation systems for large-scale clusters. Creating Infrastructure-as-Code modules to support rapid, repeatable deployments across varied environments. About You You’re a pragmatic systems builder who thrives in … complexity, enjoys autonomy, and understands what it means to own production at scale. You’ll likely bring: 5+ years’ experience building distributedsystems in Go within cloud-native environments. Deep hands-on experience with Kubernetes and container orchestration. A strong grasp of Infrastructure-as-Code (Terraform) and configuration management tools (Ansible, Puppet, or similar). Experience deploying and More ❯
help build the digital training ground for foundational AI Agents The Opportunity Join as one of the first 10 engineers and play a pivotal role in shaping the core systems that power this new AI paradigm. You’ll design and build foundational infrastructure - scalable APIs, distributedsystems, and high-fidelity simulations, that enable AI agents to learn … through trial and error. You’ll work in a tight feedback loop with AI researchers, turning cutting-edge ideas into production-ready systems used by leading Frontier labs. You Might Be a Fit If You... Have deep experience building scalable, cloud-based systems (AWS or GCP) Are fluent in typed languages such as TypeScript/Node.js, Python, Golang More ❯
TypeScript, working with a variety of technologies, including ReactJS, MongoDB, PostgreSQL. Experience using Kubernetes, Docker, and Jenkins, for containerisation and CI/CD is a plus. Knowledge of scalable distributedsystems with a deep understanding of object-oriented design and design patterns. Knowledge of designing APIs and microservices. Experience working on web technologies. Deep understanding of messaging systems. More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Quantifi
experience in FinTech, capital markets, or trading/risk platforms. Familiarity with Git, Azure DevOps, and CI/CD pipelines. Experience optimizing performance in large, complex codebases. Exposure to distributedsystems, multithreading, or high-frequency data processing. Compensation & Benefits Competitive compensation, bonus, and benefits package. Hybrid work model with flexible arrangements and work-life balance What we offer More ❯
cost-efficient scaling on Google Cloud ( GCP ) Working knowledge of Python for AI workflows and automation. Solid understanding of SQL (PostgreSQL) and relational database design. Experience with event-driven systems (Pub/Sub, Kafka) and NoSQL databases (MongoDB). Nice to Have RAG, autonomous agents, Model Context Protocol (MCP) Blockchain/Web3 integrations or tokenisation frameworks Understanding of cryptography … and distributedsystems Background in fintech, wealth management or due-diligence automation What’s On Offer Shape the future of how the world invests in alternative assets through AI High ownership role in shaping a next-generation AI fintech platform Close collaboration with an experienced CTO and founding team Opportunity to build and lead an elite engineering team … Mission-driven culture with strong backing from top-tier investors Impactful work with exposure to advanced AI, automation and agentic systems Competitive salary, good benefits & equity. More ❯
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 backend systems … years' experience in backend software development, including several years in a senior or principal-level engineering role. Expertise in Python (or a similar backend language), with proven experience designing distributedsystems, 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 More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Fruition Group
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 backend systems … years' experience in backend software development, including several years in a senior or principal-level engineering role. Expertise in Python (or a similar backend language), with proven experience designing distributedsystems, 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 More ❯
Software Engineer to join its core engineering team. This organisation is building next-generation automation and intelligence solutions, and you will play a key role in developing the backend systems that power a high-impact platform used by customers worldwide. Role Overview In this position, you’ll take ownership of critical backend services and work closely with product, frontend … and AI engineering teams. You’ll design reliable, scalable systems and deliver high-quality code that directly influences the platform’s performance and customer experience. Key Responsibilities Design, develop, and maintain backend services using Node.js and NestJS Build and support microservices and event-driven architectures Develop clean, maintainable, and well-tested code Create and optimise RESTful APIs with strong … agile environment with cross-functional teams Qualifications Degree in Computer Science or related field 2+ years of backend development experience with Node.js Strong knowledge of TypeScript , async programming, and distributedsystems Experience with microservices & event-driven architectures Skilled in writing unit and integration tests Experience with cloud platforms and CI/CD workflows Strong collaboration and problem-solving More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Opus Recruitment Solutions
to save, transact, and grow their money with confidence. We’re looking for x8 Java Developers to join their core engineering team. You’ll help design and build backend systems that power real-time financial operations, from transaction processing to user authentication and fund management. The work is greenfield, the architecture is modular, and the impact is tangible. You … contributing to a microservices ecosystem, and collaborating across disciplines to deliver secure, scalable solutions. The ideal Java Developer will bring deep experience in Java (17+), a strong grasp of distributedsystems, and a passion for building infrastructure that performs under pressure. Tech stack includes: Java 21, Springboot, Microservices, TDD, AWS, React. This is a mostly remote role with … regions. You will also have access to shares! Salaries in the range of £100k - £140k and sign on bonus. If you’re excited by the challenge of building resilient systems for real-world financial use cases and want to work with a team that values clarity, autonomy, and purpose. we’d love to hear from you. Interested in learning More ❯