Senior Software Engineer, AI Centre of Excellence
Checkout.com3 months ago
London, United KingdomSenior
Responsibilities
- Partner with product managers, data scientists, and engineers to research, validate, and deliver Generative AI use cases.
- Design and build APIs and microservices integrating AI capabilities into internal and external workflows.
- Develop, fine-tune, and deploy LLM-based applications such as chatbots, assistants, and knowledge extraction tools.
- Architect scalable AI infrastructure on AWS, GCP, or Azure using containerisation and Infrastructure-as-Code.
- Implement CI/CD pipelines and secure, compliant AI deployment practices.
- Build interfaces for teams to interact with AI-driven features.
- Optimise the performance, reliability, and scalability of AI systems.
- Mentor peers, establish engineering best practices, and contribute to Checkout.com’s AI strategy.
Requirements
- Hands-on experience with LLMs such as GPT, BERT, Llama, or Gemini and applying them to real-world problems.
- Strong backend engineering expertise, including RESTful API and microservices design.
- Proficiency in Python or JavaScript and familiarity with AI frameworks such as LangChain and PydanticAI.
- Understanding of cloud computing, Docker, Kubernetes, and Terraform.
- Strong problem-solving, communication, and cross-functional collaboration skills.
- Preferred: proficiency in C# or Java; frontend experience with JavaScript, TypeScript, and React; Generative AI application development and model fine-tuning; ethical AI and AI governance knowledge; rapid prototyping with measurable ROI; distributed systems and large-scale data processing experience; open-source contributions or a strong GitHub portfolio; and payments-industry experience.
Benefits
- Hybrid working model with three days per week in the office.
- Flexible and accessible working environment with support for workplace accommodations.
- Meaningful ownership, career growth opportunities, and recognition for impact.
Tech Stack
Categories
About Checkout.com
Checkout.com builds a global payments platform for enterprise merchants, offering card acquiring, payment processing, issuing, and risk/fraud tools across 145+ currencies. It serves ecommerce and digital businesses and earns primarily through transaction and service fees, with direct integrations to schemes like Visa, Mastercard, and Amex. Founded in 2012 and headquartered in London, the privately held company counts brands such as Spotify, eBay, Uber, Klarna, and Sony among its customers.