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Hi, I’m Oliver Nielsen—a senior Python and OpenAI developer based in Quezon City, Philippines. I’ve spent over 7 years delivering scalable, business-driven AI solutions for startups and enterprises, helping clients streamline costs and accelerate growth. I specialize in OpenAI-powered tools, AI agents, RAG systems, and SaaS backends. I design and ship end-to-end AI features—from fast, reliable APIs to intelligent automation—driving measurable outcomes like higher conversions and improved retention.…Hi, I’m Oliver Nielsen—a senior Python and OpenAI developer based in Quezon City, Philippines. I’ve spent over 7 years delivering scalable, business-driven AI solutions for startups and enterprises, helping clients streamline costs and accelerate growth. I specialize in OpenAI-powered tools, AI agents, RAG systems, and SaaS backends. I design and ship end-to-end AI features—from fast, reliable APIs to intelligent automation—driving measurable outcomes like higher conversions and improved retention.

Oliver Nielsen

Back-End Developer, AI Engineer, Full Stack Developer, +2

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Hi, I’m Oliver Nielsen—a senior Python and OpenAI developer based in Quezon City, Philippines. I’ve spent over 7 years delivering scalable, business-driven AI solutions for startups and enterprises, helping clients streamline costs and accelerate growth. I specialize in OpenAI-powered tools, AI agents, RAG systems, and SaaS backends. I design and ship end-to-end AI features—from fast, reliable APIs to intelligent automation—driving measurable outcomes like higher conversions and improved retention.…Hi, I’m Oliver Nielsen—a senior Python and OpenAI developer based in Quezon City, Philippines. I’ve spent over 7 years delivering scalable, business-driven AI solutions for startups and enterprises, helping clients streamline costs and accelerate growth. I specialize in OpenAI-powered tools, AI agents, RAG systems, and SaaS backends. I design and ship end-to-end AI features—from fast, reliable APIs to intelligent automation—driving measurable outcomes like higher conversions and improved retention.

Available to hire

Hi, I’m Oliver Nielsen—a senior Python and OpenAI developer based in Quezon City, Philippines. I’ve spent over 7 years delivering scalable, business-driven AI solutions for startups and enterprises, helping clients streamline costs and accelerate growth.

I specialize in OpenAI-powered tools, AI agents, RAG systems, and SaaS backends. I design and ship end-to-end AI features—from fast, reliable APIs to intelligent automation—driving measurable outcomes like higher conversions and improved retention.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Tagalog

Intermediate

Work Experience

Senior Python & OpenAI Developer at StackTrek

June 20, 2020 - Present

Led development of scalable AI/LLM-powered backends; delivered multiple AI-driven SaaS solutions; built automated tooling that improved operational efficiency and reduced costs. Achieved faster time-to-market and supported 100k+ active users.

Junior Developer at BridgeTech

January 1, 2016 - December 31, 2016

Contributed to internal CRM and error-monitoring initiatives; improved workflows by ~30%; integrated monitoring and QA processes to ensure on-time delivery of client projects.

Independent Python & LLM Engineer at Freelance / Independent

January 1, 2018 - Present

Freelance engagements with startups and enterprises worldwide, delivering Python-based AI/LLM solutions, automation tooling, and backend services.

Senior Python & OpenAI Developer at Freelance / Self-Employed

January 1, 2017 - Present

Built and scaled production-grade Python backends and AI-powered systems; delivered GPT-powered chatbots and automation tools; helped clients cut support costs by 40%; increased digital product conversion rates by 22%; improved onboarding, testing, and automation workflows.

Senior Backend & AI Developer at Freelance

January 1, 2019 - Present

Designed high-performance APIs and LLm-driven SaaS platforms; implemented AI agents and RAG systems; led automation efforts across QA and engineering teams to accelerate releases.

Junior Python Developer at BridgeTech

June 1, 2016 - January 1, 2017

Configured Sentry for centralized error monitoring and alerting; translated requirements into stable endpoints and deployment-ready code.