1 to 25 of 46 Permanent Open Source Jobs in London

Solutions Architect - Applications, Open Source, Kafka, Biztalk, Angular

Hiring Organisation
Bangura Solutions
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 80,000 - 95,000 Annual
Solution Architect - Applications, Open Source, Kafka, Biztalk, Angular Exciting career opportunity available for a proven Applications Solutions Architect who has depth and breadth in designing and building technical Open Source - Kafka, Biztalk, Angular solutions. Working for a global financial services organisation, you will get the opportunity … working closely with business teams in making the right technology choices for the organisation. It may also suit an experienced Solutions Architect - Applications, Open Source, who is looking for a new environment to apply your lesson learned in a new global environment to challenge yourself. Our client believes ...

Lead Javascript Engineer

Hiring Organisation
Hydrogen Group
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 90,000 - 95,000 Annual
positive direction. Foster and build culture within your team using the values that we set out as an organisation You encourage and drive an open source way of development abiding by open source principles You drive evolutionary and challenging architectural solutions which maintain cohesiveness across … always have an eye on the industry trends You ensure we follow industry best practices You have: Experience creating/contributing to an open source project Experience managing a team of software engineers Architected and built performant, scalable, resilient public facing products Experience in Javascript Experience with state ...

Applied AI Research Engineer - £300k + bens - London

Hiring Organisation
Transparent Technology
Location
City of London, London, United Kingdom
Employment Type
Permanent
methods * Fine-tune and deploy LLMs in production environments * Apply reinforcement learning techniques (SFT, PPO, DPO, GRPO) * Run hands-on experimentation to outperform closed-source models * Break down ambiguous research ideas into structured roadmaps * Optimise open-source LLMs (LoRa, Llama etc.) for enterprise deployment One hire will … applied AI/ML (exceptional 3+ years considered) * Deep experience in fine-tuning + reinforcement learning * Experience shipping ML systems from research into production * Open-source LLM experience essential * Product-driven engineering mindset (Apple, LinkedIn, Amazon style environments ideal but must be willing to work in a start ...

Senior Software Engineer - Frontend

Hiring Organisation
Zettafleet
Location
London Area, United Kingdom
platform for businesses and organisations to train their own LLM on their proprietary data. We can use non-conventional AI hardware and automatically source and combine GPUs (and other types of AI accelerators) from multiple cloud providers, enabling users to optimise for cost, duration or geographic location … interpersonal and communication skills, with technical and non-technical stakeholders. Nice to have: Visual design: Background in graphic design and/or visual arts. Open-source: Contributions to and experience in open-source projects. Startup experience: Experience with a startup work environment and wider ecosystem. ...

AI Architect

Hiring Organisation
Hirexa Solutions UK
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
FinOps & Model Routing Framework Expertise : Hands-on development experience with one or more orchestration frameworks (e.g., LangChain, LlamaIndex, Semantic Kernel). Thought Leadership & Open Source : Published work (whitepapers, patents), conference speaking engagements, or active contributions to relevant open-source projects. Certifications : Professional-level cloud certifications (e.g. ...

Staff Software Engineer, AI/ML Product Engineering

Hiring Organisation
Entrust
Location
City of London, London, United Kingdom
proof systems Drive continuous improvement of development processes, deployment pipelines, and system reliability Represent Entrust's technical capabilities in industry forums and contribute to open-source biometric standards Your future short-term and major projects: Grow adoption of Biometrics products, from face matching, liveness detection and authentication ...

Java Engineer

Hiring Organisation
Profile 29
Location
South East London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£50,000
case-management or service-orchestration platforms Understanding of agentic AI capabilities and how they can complement workflow automation Experience mentoring developers or contributing to open-source Camunda extensions Already holding UK security clearance (SC, DV, eDV) Other Stuff NB: Please only apply if you are a UK National ...

Principle Java Engineer

Hiring Organisation
Profile 29
Location
South East London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
case-management or service-orchestration platforms Understanding of agentic AI capabilities and how they can complement workflow automation Experience mentoring developers or contributing to open-source Camunda extensions Already holding UK security clearance (SC, DV, eDV) Other Stuff NB: Please only apply if you are a UK National ...

Managing Architect

Hiring Organisation
Aker Systems Limited
Location
Central London, London, United Kingdom
Employment Type
Permanent
specialists. The successful candidate will meet all of the following essential criteria: Demonstrable experience in designing large scale cloud migration projects/programmes with open source and commercial software within AWS, Azure, GCP or hybrid Experience in operating within a multi-disciplined team and clearly communicating complex technology … Understanding of NCSC Cloud Security Principles and its practical implementations Aker Systems Attributes At Aker we work as a team, we are collaborative, hardworking, open, and delivery obsessed. There is no blame culture here: try things, and take responsibility for the outcomes. You are always part of the wider ...

AI Engineer

Hiring Organisation
167 Solutions Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
train, evaluate and optimise models Implement and scale solutions on AWS (SageMaker, Bedrock, Lambda, etc.) Contribute to generative AI initiatives using Hugging Face and open-source models Collaborate with data engineers, architects and stakeholders to deliver production systems Required Skills & Experience: 38 years experience in AI, Machine Learning ...

Lead AI Architect - Permanent - Hybrid - Insurance

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £110,000 per annum
along with data scientists, MLOps engineers, GenAI engineers, and business teams to design architecture and pilot use cases. Evaluate and select appropriate technologies from open-source and commercial ecosystems, considering deployment models and integration with existing enterprise tools. Support the successful delivery and ongoing operational improvement ...

DevOps Engineer

Hiring Organisation
UK based Hedge Fund
Location
London Area, United Kingdom
team Desirable • Networking expertise • AWS specific knowledge • Experience of a cloud migration project • Cloud security experience • A track record of contributions to an open source project ...

Observability Platform Engineer - Elite Quant Hedge Fund

Hiring Organisation
Winston Fox
Location
London, UK
bias for systemic platform fixes. Strong software engineering skills: high proficiency in at least one modern programming language (Python preferred). Modern open-source observability knowledge: Experience within the ecosystem (e.g. OpenTelemetry, LGTM stack, Prometheus, Grafana, Loki). Unsiloed cross-platform operator: Confidence taming complex technical landscapes spanning ...

Observability SRE / Platform Engineer – Elite Quant Hedge Fund

Hiring Organisation
Winston Fox
Location
City of London, London, United Kingdom
bias for systemic platform fixes. Strong software engineering skills: high proficiency in at least one modern programming language (Python preferred). Modern open-source observability knowledge: Experience within the ecosystem (e.g. OpenTelemetry, LGTM stack, Prometheus, Grafana, Loki). Unsiloed cross-platform operator: Confidence taming complex technical landscapes spanning ...

Senior Software Engineer

Hiring Organisation
Burns Sheehan
Location
City of London, London, United Kingdom
performance, reliability and availability are key considerations. Experience working on software infrastructure or building Cloud native software using Kubernetes Understanding of systems design and Open Source components. If you have knowledge of building virtual machines - Virtual servers, virtual networking or network programming - that's a plus... but definitely ...

Back End Developer

Hiring Organisation
Albert Bow
Location
London Area, United Kingdom
RabbitMQ, NSQ, or Pulsar Integrating external APIs/services Performance optimisation & working under performance budgets Interest or experience in cryptocurrencies, Web3, or digital assets Opensource contributions or tech blogs/talks Why apply? Work on real financial infrastructure , not internal tooling Engineering‐driven culture focused on quality ...

Software Engineer

Hiring Organisation
Albert Bow
Location
City of London, London, United Kingdom
party services or financial data providers. Familiarity with performance budgets, monitoring, and observability tooling. Knowledge of crypto, digital assets, or Web3 technologies. Contributions to open-source projects or engineering blogs. What’s Offered Opportunity to work on high-impact fintech projects serving users globally. Collaborative engineering culture focused ...

Machine Learning Engineer

Hiring Organisation
The Change Partners - Global talent specialists for a connected world
Location
London Area, United Kingdom
lasts. Bonus Points: If you’ve worked with AWS/GCP, understand the nuances of A/B testing, or have a passion for open-source development, we definitely want to talk. Please note this role doesn’t offer sponsorship. Please apply to learn more about the role. ...

Quant Developer

Hiring Organisation
Huxley Associates
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£180000 - £200000/annum
Asian options, barrier structures, or path-dependent exotics common in commodity markets Machine learning applied to vol forecasting, regime detection, or execution cost optimisation Open-source quant library contributions, published research, or CQF/MFE/PhD in a quantitative discipline What We're Looking ...

Lead Software Engineer

Hiring Organisation
Burns Sheehan
Location
London Area, United Kingdom
solving ambiguous and complex challenges. Experience working on software infrastructure or building Cloud native software using Kubernetes. Understanding of systems design and Open Source components. If you have knowledge of building virtual machines - Virtual servers, virtual networking or network programming - that's a plus... but definitely not needed ...

SOFTWARE ENGINEER / OFFENSIVE SECURITY

Hiring Organisation
Secure Recruitment Ltd
Location
North London, London, United Kingdom
Employment Type
Permanent, Work From Home
Proactive Approach to Navigating Technical Challenges. Experience of working within Fast-Moving Growth Environments or B2B Scale-UpsFocusing on Enterprise Clients Bonus: Contributions to Open-Source Projects or Public Security Tooling Responsibilities of Application Security Engineer: Cloud-Driven Engineering: Utilise Cloud-Native Services to Develop Resilient, Big Data ...

Solutions Engineer

Hiring Organisation
HireCapital
Location
City of London, London, United Kingdom
customers Lead customer workshops on Property-Based Testing (PBT) and related methodologies Support the sales team with technical qualification and consultation Find bugs. Break open source software. Make a point of it. Build, maintain, and deliver product demos that land with technical audiences Guide customers and prospects ...

LLM Engineer

Hiring Organisation
Ultralytics
Location
City of London, London, United Kingdom
plus local holidays. Flexible Hours: Tailor your working hours to suit your productivity. Tech: Engage with cutting-edge AI projects and contribute to leading open-source software. Gear: Brand-new Apple MacBook and Apple Display provided. Team: Become part of a supportive and passionate team environment. ...

Mid-Senior Ruby on Rails Engineer (B2B SaaS | Hybrid | UK)

Hiring Organisation
Transreport
Location
London Area, United Kingdom
Experience working with mobile applications (React Native/Kotlin/Swift). Experience working in regulated industries or multi-client B2B systems. Contributions to open-source Ruby projects or technical blogging. Benefits Private healthcare after your probation (including children) Hybrid working model 25 days holiday Volunteering Leave Free ...

Cloud Architect- eDV Cleared

Hiring Organisation
Searchability NS&D
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £120,000 per annum, Negotiable
commute to London.- Experience as a hands-on cloud architect CLOUD ARCHITECT ESSENTIAL SKILLS- Expertise in delivering AWS Cloud native solutions- Background in Open-source technologies and frameworks- Experience with micro-service based architectures- Experience working with structured architecture approaches (TOGAF or SAFe)- Leadership and stakeholder management experience ...