One builder. Full-stack. Zero overhead.
Architecture built to last, delivered at solo speed. I replace your early-stage dev team — from design to deployment, with senior CTO-level rigor.
Your next technical team starts here.
Transparent pricing. No surprises. Pick the model that fits your stage and scope — or book a call and I'll help you figure it out.
CTO Studio
Your AI-powered technical team. Led by a 3x CTO.
I plug into your company as your technical team. I build, ship, and run your product — backed by AI coding agents that let me deliver at the pace of a full engineering team.
You talk to me directly. I handle architecture, code, deployments, and daily production releases. First MVP ships in week one.
What's included
- Hands-on CTO leading every decision
- AI coding agents for team-level output
- First MVP delivered in week 1
- Daily deployments and progress reports
- Direct communication — no middlemen
- Full transparency on tools and process
Best for
- →Founders who need a technical team, not just a developer
- →Startups with no engineering bandwidth
- →Companies with a scoped project and no one to build it
Early-stage founder? Let's talk about flexible arrangements.
Build & Ship
Scoped. Priced. Shipped.
Per 2-week sprint. Scoping: €1,000 (credited toward development).
You have a project. I scope it, price it, and build it in 2-week blocks.
We start with 1-3 days of scoping — I deliver a PRD, user stories, wireframes, and a schedule. Then I build. First delivery in week one. Working product by week two. Daily updates throughout.
What's included
- Scoping phase: PRD, user stories, wireframes, schedule
- Development in 2-week blocks at €5,000 each
- First delivery in week 1, MVP by week 2
- Daily progress updates
- Volume deal: buy 4 blocks, get 5 (10 weeks for €20,000)
After launch
- Take it and run — it's yours
- Or add maintenance: €500/month for hosting, bug fixes, security updates, and small feature requests. No support cap.
Best for
- →Defined projects with clear scope
- →MVPs, internal tools, integrations
- →Teams that need a project done, not an ongoing team
Project bigger than expected? We'll upgrade you to CTO Studio.
Senior Embed
15 years of Rails and fintech, embedded in your team.
Long engagements. Short-term (1-2 weeks): €1,000/day.
You need a senior engineer. Not a junior with a senior title — someone who's scaled teams to 30, managed 200+ servers, and built systems processing hundreds of millions in transactions.
I join your team, your tools, your standups. Fully flexible — by the day, week, or month. No minimum commitment.
What's included
- Senior Ruby on Rails and AI expertise
- Flexible engagement: hours, days, or weeks
- No minimum commitment
- Works within your existing team and processes
Best for
- →Agencies needing a Ruby/Rails or AI specialist
- →CTOs who need a senior pair of hands for a sprint
- →Teams hitting a technical wall
From zero to production in one week.
Discovery call (30 min)
We talk about what you're building, where you are, and what you need. No pitch — just a conversation.
Setup & first MVP (Week 1)
I set up the environment, architecture, CI/CD, and ship a working first version. You see code in production before the week is out.
Daily delivery (Week 2+)
Every day: new features deployed, progress reports sent, production updates shipped. I stay as close to you as you need.
Scale as needed
Need to bring in specialists for a specific task? I handle it. The engagement adapts to the project, not the other way around.
Built a neobank. It raised €65M.
As CTO at Faktus, I built the entire v1 solo — KYC, card issuing, credit checks, loan management, everyday banking. The platform processed 10,000+ transactions on launch day. Faktus raised €9M in 2024 and €56M in 2025.
“Sam was CTO at CapSens for 6 years. He built our AWS infrastructure of 200+ servers, scaled the team to 30 developers, and managed crowdfunding platforms handling hundreds of millions in transactions. He never stopped having his hands in the code. I recommend him unconditionally.”
“I had the pleasure of working with Sam as my project lead on a Faktus (Ruby on Rails) project. Sam is not only a highly skilled Ruby on Rails developer but also an outstanding leader. He ensured that code was clean, scalable, efficient and always encouraging the best practices. His proactive approach to problem-solving and willingness to go the extra mile ensured that we met our project goals on time.”
“I recommend Sam for his qualities as a Ruby developer, with an excellent analytical ability: he solves complex problems with relevant technical solutions. Sam has deep knowledge of web technologies that he shares with team members and is always ready to help others. He has been an excellent mentor!”
Common questions
About Sam
I'm Sam Ettahiri — a full-stack engineer with 15+ years building software, three stints as CTO at FinTech startups, and a track record of shipping products that raise millions. I run Baijobu as a solo agency, using AI to deliver at the pace of a full engineering team without the overhead.
Let's talk about what you're building.
30-minute call. No pitch, no pressure. I'll tell you honestly whether I'm the right fit — and if I'm not, I'll point you in the right direction.
Prefer email?
sam@baijobu.com