Software Engineer (Backend, AI Systems)Locai Labs • London, England, United Kingdom
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Software Engineer (Backend, AI Systems)
Locai Labs
- London, England, United Kingdom
- London, England, United Kingdom
À propos
The British Foundational AI Company , based in Paddington, London. We are dedicated to building world‑class
large language models
at the forefront of cost, efficiency, and capability. Our mission is to advance cutting‑edge AI from within the UK by combining deep technical innovation with engineering excellence, creating scalable models and intelligent systems that power next‑generation applications for consumers and enterprises alike. Our work spans across: Bespoke agentic applications for enterprise and consumer domains APIs and developer tools that enable intelligent automation The Role We are seeking a
Software Engineer (Backend, AI Systems)
to design and build the backend systems, APIs, and tools that power Locai Labs’ AI models and agentic platforms. You will work on a diverse range of challenges, from model‑serving APIs and data pipelines to infrastructure for intelligent agents and automation frameworks. This is a hands‑on engineering role for someone who enjoys solving complex technical problems and shipping impactful products. You will collaborate closely with the CTO and engineering team to design, build, and scale production systems that integrate AI into real‑world applications. Responsibilities
Design and develop backend systems and APIs for AI‑driven products and agent frameworks Integrate LLMs into scalable, production‑ready systems Build internal tools and services to manage agents, workflows, and orchestration logic Collaborate with frontend, infrastructure, and research teams to deliver cohesive product experiences Contribute to system architecture, technical design, and engineering best practices Write clean, maintainable, and well‑tested code Required Experience
2–5 years
of professional software engineering experience, ideally working on backend systems, APIs, or AI‑related products Strong understanding of backend architectures, REST/GraphQL APIs, and data modelling Experience with
containerisation (Docker)
and cloud platforms ( GCP ,
AWS , or similar) Familiarity with
LLM or AI APIs Exposure to
agentic frameworks
(LangChain, LlamaIndex, Semantic Kernel, etc.) Practical experience with
databases
(SQL / NoSQL) Strong foundation in
software design principles
and systems thinking Comfortable working in a fast‑paced, early‑stage start‑up environment with ownership and autonomy Nice to Have
Experience with vector databases or embedding pipelines Understanding of event‑driven or real‑time systems ( Kafka ,
Pub/Sub , etc.) Knowledge of API authentication, access control, or multi‑tenant architectures Familiarity with React or other front‑end frameworks (for internal tools) Interest in applied AI research, model fine‑tuning, or reasoning agents Environment and Culture
You will join a small, highly technical team where your contributions directly shape the company’s technology and products. We value
ownership, curiosity, and pragmatism ; every engineer at Locai Labs helps define architecture, infrastructure, and product direction. You will work on‑site at our
Paddington HQ , collaborating closely with the CTO and engineering team in a transparent, fast‑moving, and innovation‑focused environment. Application Process
Application Review
– We evaluate your background and experience. Take‑Home Technical Assessment
– A short exercise to demonstrate your engineering approach. Technical Interview
– Discussion of technical depth, design thinking, and problem‑solving. On‑Site Session at HQ
– Collaboration exercises and technical discussions with the team. Offer
– Formal offer and next steps. Referrals increase your chances of interviewing at Locai Labs by 2x If this sounds like you, we would love to hear from you. Apply directly via the form below: https://forms.office.com/e/YQcaKRvdrN (Strictly no agencies or recruiters. We are only accepting direct applications.) Seniority level
Mid‑Senior level Employment type
Full‑time Job function
Engineering and Information Technology Software Development
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Compétences linguistiques
- English
Avis aux utilisateurs
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