Senior engineer · 14 years shipping

I fix and ship Python/FastAPI backends for startups

48-hour audits and 2-week delivery sprints. Clear roadmap, production-grade code, and crisp handoff.

Performance, security, reliability
FastAPI · Postgres · Docker · AWS/DO
PR-based delivery + tests + docs
Bogdan Veliscu

How I work

A simple ladder that keeps risk low and outcomes high.

Outcomes

A few concrete results from recent work.

65% faster queries

Improved query performance and reduced incidents with test-first changes.

35% higher processing throughput

Hardened event consumers with backpressure-aware design and better observability.

Services

Productized offers, clear deliverables, fast turnaround.

2-week Backend Delivery Sprint

Ship one major feature or critical fix with PR-based delivery and handoff docs.

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Fractional CTO (Retainer)

Advisory or hands-on leadership after we’ve shipped together.

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Selected projects

A few products and systems I’ve built end-to-end (plus links to the rest of the portfolio).

Code Atlas

Turn Claude sessions into a searchable knowledge graph.

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Code Ship

Learn Python by programming mBot 2 robots (FastAPI + Lit + Three.js).

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Tech Diligence Snapshot

Automated technical due diligence reports for investors and founders.

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Study Flow

ADHD-optimized study sessions and planning (HTMX PWA).

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Story Grow

AI-powered storytelling for kids (COPPA-aware product design).

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Support Agent Factory

Production-ready AI support agents (RAG + operator tooling).

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Open source

Code, templates, and references.

CodeSwiftr org

Product repos (including Code Atlas).

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Code Atlas repo

codeswiftr/code-atlas

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Other FORGE domains

Explore the broader portfolio.

The Bright Harbor

Kids learning and family education products.

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NeoForge

AI/ML tools and production patterns.

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Testimonials

Clear communication, reliable delivery, and strong leadership.

"It was a pleasure to work with Bogdan. He is sharp and efficient and always kept the user's impact in mind. Bogdan always provided exemplary programming service, a proactive approach to agile development, very clear and effective communications, and most importantly, the respect and professional attitude I value from all team members."
David Buchanan
David Buchanan COO
"Professional, detailed and pleasant to work with. Bogdan led the development of both iOS and Android apps at Specta, facing both technical challenges and showing great leadership skills."
Shay Dahan
Shay Dahan CPO
"I had the pleasure of working with Bogdan on a FinTech project where he was the tech lead. His deep technical knowledge and ability to work with a product team impressed me. He delivered good leadership to junior developers and was a clear communicator and a great problem-solver."
Christian Ramsoy
Christian Ramsoy CPO
"I had the pleasure of working with Bogdan on the development of the Whistler app, and I cannot speak highly enough of his contributions. From the very beginning, Bogdan demonstrated an incredible ability to translate our vision into a robust, user-friendly platform. His expertise in software development, combined with his innovative problem-solving skills, played a crucial role in bringing Whistler to life. Bogdan not only delivered high-quality code but also introduced several key features that significantly enhanced user engagement and performance. His proactive approach and dedication to excellence have been truly inspiring. I am grateful for his outstanding work and would highly recommend him to any team looking for a talented and reliable developer."
J
Joshua Afolabi Founder Bullion
"Bogdan is a highly skilled senior developer and tech lead. I worked with him in a complex and innovative startup project and learned a great deal from him about Python, advanced web development, and project management. His positive and solution-oriented attitude and calm demeanor make him a pleasure to work with. I can highly recommend him to anyone seeking expert advice or assistance with technical projects."
S
Sindre Duedahl Programmer
"I have had the privilege of knowing Bogdan since the beginning of 2020. His calm nature is palpable, and his knowledge in the tech domain seems near endless. Any job you throw at him, he handles with professionalism and gusto. He is a thought leader, a mentor, and crucially, someone you can rely on. But beyond it all, he is a great person—I always walk away with a smile when I engage with him."
C
CJ Visser Founder & CEO Bluebird Development
"In working with developers early in their career you learn who has the patience and big-picture perspective to grow into leadership. Bogdan persisted in being the eye of the storm — always calm and unflustered. We always used to say, “Behind that deep voice is a teddy bear.”"
m
mink
"Bogdan is a strong senior developer with a focus on quality, best practices and continuous improvement. He has a good awareness of his strengths and weaknesses and worked with me to focus his engagement on the areas that he could have the most impact in the shortest time. He strikes a good balance of working independently, while maintaining regular communication to clearly align on goals, priorities and handover. I appreciated having Bogdan on the team - it was a pleasure to work with him and I am sure he will be a valuable contributor to both solo and team engagements going forward."
R
Ruben Bakker

Notes

FastAPI performance, reliability, and delivery playbooks.

FastAPI Audits

FastAPI Backend Audit Checklist (48 Hours)

A practical checklist for quickly finding performance, security, and reliability risks in a FastAPI codebase—plus what to fix first.

8 min read
Read article →
Performance

FastAPI Performance Triage in 30 Minutes

A lightweight process to go from “this endpoint is slow” to a concrete fix plan, with the minimum tooling required.

7 min read
Read article →

Want a second pair of eyes?

Drop your email to get the audit checklist and occasional notes on performance/reliability.

Senior ownership

Tight scopes, PR-based delivery, clear communication.

Production posture

Performance, security, reliability, and test posture—no fragile hacks.

Crisp handoff

Docs + walkthrough so your team can run it.

FAQ

FastAPI is my most common stack, but I also work with Django/Flask and migrations to FastAPI when it’s the right move.

Yes — if scope is clear and you already have enough context. Otherwise, the audit is the fastest way to de-risk and prioritize.

Book a call and share a bit about your codebase and goals. I’ll recommend audit vs sprint and propose a fixed scope.

Want a clearer roadmap (or faster shipping)?

If your backend is slow, messy, or blocking product work, I can help you ship the next step with confidence.