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Daniel Walker

@danielwalker

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Senior software engineer building AI-driven, cloud-native SaaS platforms and scalable systems.

United Kingdom

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What I'm looking for

I seek a senior technical role building AI-driven backend systems at a collaborative, product-led company where I can lead architecture, mentor teams, and deliver scalable, reliable SaaS.

I am a Senior Software Engineer with 9+ years building AI-driven, cloud-native SaaS platforms across startups and high-growth environments. I specialize in backend and LLM-based systems, driving performance, reliability, and end-to-end technical delivery.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Probey Services

Feb 2022 - Dec 2025 (3 years 10 months)

Led AI backend systems using Python, FastAPI, and AWS, improving reliability and scalability by 35%. Built LLM workflows for summarisation, chat, and RAG, cutting manual effort by 40%. Mentored 3 junior engineers, set CI/CD standards, and reduced deployment failures by 30%.

Python fastAPI AWS Lambda Kubernetes RAG PostgreSQL CI CD Distributed Systems

Senior Software Engineer

Rithum

Sep 2017 - Jan 2022 (4 years 4 months)

Built AI features using OpenAI, LangChain, and custom embeddings. Led backend refactors that improved performance and reduced duplication. Developed Django, FastAPI, and React apps, improving dashboard speed by 40%. Mentored juniors and introduced code review standards.

OpenAI API fastAPI Django React ETL SQL

Full-Stack Engineer

Bamboo Agile

Oct 2015 - Aug 2017 (1 year 10 months)

Delivered 12+ production features across early-stage products. Owned features end to end from requirements to release. Improved load times by 30% and cut UI defects by 25% through performance tuning and modular frontend design.

JavaScript React REST APIs State Management Frontend Architecture Performance Tuning

Education

Degrees, certifications, and relevant coursework

Nanyang Technological University

Bachelor of Science, Software Engineering

2015 -

Activities and societies: Built academic and practical projects emphasizing scalable systems, backend architecture, and performance optimization; specialized focus on algorithms, system architecture, data processing, and AI fundamentals.

Completed coursework and practical training in software engineering, distributed systems, algorithms, databases, operating systems, and cloud computing with projects focused on scalable systems and backend architecture.