Owen Thomas

About the Company

Hey, we are Owen Thomas. We are a relationship first recruitment partner for Data, Product & Engineering, across Contract and Permanent roles in the UK & Europe.

Humanness matters. We believe that empathy is the core of great recruitment; bringing opportunity and businesses to life, beyond what a person can see on a website.

All done with our OT personal touch.

Our mission: To be leaders within our specialisms and create unrivalled opportunities both internally and externally.

We balance purpose and profit. Actively investing a proportion of our profits into projects that positively influence; diversity in tech & the climate crisis.

We do not claim to change the world, but we will do our very best to leave it in a better place than we found it.

Listed Jobs

Company Name

Owen Thomas

Job Title

AI Software Engineer, Contract, Backend Focus | Python, C++/C#, ML & LLMs | AWS/Azure | Data Handling | Renewable Energy Innovation Hub | £575-700/day, Outside | 6-month + | Remote, UK

Job Description

**Job Title** AI Software Engineer (Backend) – Contract **Role Summary** Senior backend engineer responsible for designing, building, and scaling production‑grade AI systems and data pipelines. Works remotely for a renewable‑energy innovation hub, delivering AI/ML solutions on AWS/Azure using Python and optionally C++/C#. **Expectations** - Minimum 5‑7 years of professional backend development experience. - Proven track record delivering AI/ML models (GenAI, LLMs, RAG) in production. - Ability to work independently, provide architectural guidance, and mentor junior team members. **Key Responsibilities** - Design and implement backend services, APIs, and scalable ML pipelines. - Integrate and optimize classification, regression, recommendation, NLP, and LLM models. - Architect end‑to‑end AI workflows and large‑scale data pipelines. - Deploy and manage solutions in multi‑cloud environments (AWS, Azure) using Docker/Kubernetes. - Apply MLOps practices (MLflow, SageMaker, Airflow) and CI/CD for model productionisation and monitoring. - Develop evaluation frameworks, performance testing, and observability dashboards. - Collaborate with cross‑functional teams to accelerate renewable‑energy projects. - Conduct technical design reviews and mentor junior engineers/data scientists. **Required Skills** - Expert Python development; strong knowledge of C++ or C# (preferred). - Hands‑on experience with Generative AI, LLMs, LangChain/LangGraph, and Retrieval‑Augmented Generation. - MLOps tooling: MLflow, SageMaker, Airflow, CI/CD pipelines, monitoring/observability. - Cloud platforms: AWS and/or Azure; containerisation with Docker and Kubernetes. - Distributed data processing (e.g., Spark) and large‑scale dataset handling. - Solid algorithms, optimization, and performance‑tuning fundamentals. - Ability to split effort roughly 60% backend, 20% AI/ML, 20% data engineering. **Required Education & Certifications** - Bachelor’s degree in Computer Science, Software Engineering, or related field (Master’s preferred). - Relevant certifications (e.g., AWS Certified Solutions Architect, Azure AI Engineer) are a plus but not mandatory.

United kingdom

Remote

24-09-2025

Company Name

Owen Thomas

Job Title

Backend Engineer, Kotlin, AWS | Fintech, Payments Platform (B2B) | London, Hybrid (2 days per week) | Salary Up to £85,000

Job Description

**Job Title:** Backend Engineer – Kotlin & AWS **Role Summary:** Design, develop, and maintain scalable backend services for a B2B payments platform. Collaborate with cross‑functional teams to deliver robust, secure, and high‑performance integrations with customer‑facing and third‑party systems. **Expectations:** - Work in a hybrid schedule (2 days per week in office). - Own feature life‑cycle from design through deployment, ensuring code quality and uptime. - Mentor junior teammates and contribute to continuous improvement of engineering practices. **Key Responsibilities:** - Develop and maintain backend services using Kotlin, AWS services, and container orchestration (Kubernetes). - Write clean, test‑driven code with comprehensive unit and integration tests. - Build and improve CI/CD pipelines, automation, and testing frameworks. - Engage in architectural discussions, proposing scalable and maintainable solutions. - Integrate with SQL/NoSQL databases, messaging queues (SQS), and gRPC APIs. - Mentor junior engineers and share knowledge across the team. **Required Skills:** - Proven experience as a backend engineer with production systems. - Strong proficiency in Kotlin and AWS (EC2, ECS/EKS, RDS, S3, etc.). - Experience with relational and NoSQL databases, and AWS SQS. - Containerization with Kubernetes and familiarity with platform‑engineering practices. - Knowledge of gRPC (bonus). - Ability to write tests, automate deployments, and implement CI/CD pipelines. - Excellent communication and collaboration skills within cross‑functional teams. **Required Education & Certifications:** - Bachelor’s degree (or equivalent work experience) in Computer Science, Software Engineering, or related field. - AWS certifications (e.g., Solutions Architect, Developer) are a plus but not mandatory.

London, United kingdom

On site

09-10-2025

Company Name

Owen Thomas

Job Title

JavaScript Developer, Contractor, Backend Engineering | NodeJS, TypeScript, AWS | Disruptive Start-up, B2C | Rate £400-500/day (Outside) | 6-months | London, Hybrid

Job Description

Job Title: JavaScript Developer (Contractor – Backend Engineering) Role Summary: Senior backend engineer responsible for designing, developing, and maintaining scalable, secure, high‑performance APIs and services for a B2C HealthTech startup using Node.js, NestJS, TypeScript, AWS, and PostgreSQL. Expectations: Deliver production‑ready code on schedule, collaborate closely with the founding team, own end‑to‑end feature ownership, troubleshoot production incidents, continuously improve architecture, and mentor junior members. Key Responsibilities: - Design, implement, and maintain RESTful/GraphQL APIs with NestJS and TypeScript. - Build scalable data pipelines and services on AWS (Lambda, ECS/Fargate, RDS/PostgreSQL, S3, IAM, CloudWatch). - Ensure high code quality via automated tests, CI/CD, and code reviews. - Optimize performance and reliability for large datasets and high traffic. - Translate product and UX requirements into technical solutions. - Monitor, troubleshoot, and resolve production incidents. - Participate in architecture discussions and refactor legacy code. - Mentor junior engineers and share best practices. Required Skills: - 6+ years commercial backend development, primarily Node.js. - Proficiency in TypeScript, NestJS, and modern JavaScript. - Strong experience with PostgreSQL and relational database design. - Hands‑on AWS services (Lambda, ECS/Fargate, RDS, S3, IAM, CloudWatch). - API design fundamentals (REST, GraphQL, gRPC). - CI/CD experience (Git, GitHub Actions, Docker, Kubernetes). - Familiarity with large‑scale data processing and performance tuning. - Excellent problem‑solving, communication, and collaboration skills. - Comfortable taking ownership of features from concept to production. Required Education & Certifications: - Bachelor’s degree in Computer Science, Software Engineering, or related field (or equivalent experience). - AWS Certified Solutions Architect or Developer (preferred).

London, United kingdom

Hybrid

Mid level

09-10-2025

Company Name

Owen Thomas

Job Title

JavaScript Developer, Contractor, Backend Engineering | NodeJS, TypeScript, AWS | Disruptive Start-up, B2C | Rate £500/day (Outside) | 6-months | London, Hybrid

Job Description

**Job Title** JavaScript Developer, Contractor – Backend Engineering (Node.js, TypeScript, AWS) **Role Summary** Short‑term contract (6 months) to design, develop, and maintain scalable, secure backend services that power a high‑traffic B2C platform. Work closely with the founding team and cross‑functional partners to deliver robust APIs, event pipelines, and data‑heavy services. **Expactations** - 6 + years of commercial backend experience, primarily with Node.js. - Proven startup background, especially within innovative B2C consumer brands. - Comfortable handling large datasets and complex API workloads. - Strong communication skills and a proactive, ownership mindset. - Nice to have: TypeScript, full‑stack exposure, mentoring experience. **Key Responsibilities** - Design, build, and optimize backend services and APIs for mobile and web platforms. - Develop low‑latency event‑processing pipelines. - Ensure infrastructure reliability, scalability, and security. - Refine database efficiency and storage strategies. - Maintain comprehensive test coverage (unit, integration, end‑to‑end). - Collaborate with frontend and mobile teams to define and deliver API contracts. - Set up and manage monitoring, logging, and alerting systems. - Influence architecture decisions and establish engineering best practices. - Conduct code reviews and mentor junior developers. - Evaluate and integrate new technologies to expand platform capabilities. - Work with product and design teams to translate requirements into scalable solutions. - Continuously improve development workflows and system performance. **Required Skills** - Node.js (core) – 6 + years of production experience. - TypeScript (preferred). - AWS (services such as Lambda, API Gateway, DynamoDB, RDS, S3). - Event‑driven architecture (e.g., Kinesis, Kafka). - Database optimization (SQL/NoSQL). - Testing frameworks (Jest, Mocha, etc.). - Monitoring & observability tools (CloudWatch, Prometheus, Grafana). - CI/CD pipelines (GitHub Actions, Jenkins, etc.). - Code review best practices. - Agile development mindset. - Excellent written and verbal communication. **Required Education & Certifications** - Bachelor’s degree in Computer Science, Software Engineering, or related field. - AWS Certified Developer or equivalent certifications are a plus.

London, United kingdom

Hybrid

Mid level

17-10-2025