Skip to content
Available for work TODO — e.g. 'Taking on new projects from March 2026'

Jesús Ramírez

TODO — the one line that sells you. Name the problem you solve and who for. Example: 'I make slow Rails applications fast for Series-A teams.' Avoid 'passionate software engineer'.

01 Services

How I can help

Ways we can work together. Every engagement starts with a short call to check the fit — no pitch deck, no pressure.

S-01 1–2 weeks

Performance audit

TODO — a fixed-scope review of a slow or expensive system, ending in a prioritised plan you can act on with or without me.

  • Written findings report with measurements
  • Prioritised fix list, ranked by effort against impact
  • A walkthrough call with your engineers
S-02 Ongoing, 2–3 days a week

Fractional senior engineer

TODO — I join your team part-time to raise the technical bar: shipping features, reviewing code, and mentoring the engineers you already have.

  • Shipped features in your codebase
  • Code review and architectural guidance
  • Documentation your team keeps after I leave
S-03 4–12 weeks

Greenfield build

TODO — from empty repository to production. Best for teams who need a solid foundation laid quickly and correctly.

  • Production system, deployed
  • CI/CD and monitoring set up
  • Handover documentation and a working session
S-04 Monthly retainer

Technical advisory

TODO — a recurring call for founders and teams who need a senior engineer to think out loud with before making expensive decisions.

  • Scheduled calls, monthly or fortnightly
  • Written recommendations after each session
  • Async questions answered between calls
02 Work

Proof, not promises

Selected engagements. Each one lists what changed as a result — the numbers matter more than the tech stack.

2026 Personal active

jesusrtech.com

Design and build

A statically generated brand hub that ships almost no JavaScript and is maintained by editing plain text files.

JS shipped
< 5 kB
Lighthouse
100
Build time
4.5s
  • astro
  • tailwind
  • mdx
  • typescript
03 Video

Watch me work

Talks, walkthroughs, and build logs — the fastest way to see how I think through a problem.

12:04
YouTube

TODO — replace with a real video title

TODO — one or two sentences on what a viewer gets out of this. Delete these three placeholder entries once you add real videos; the Videos section hides itself automatically when this file is empty.

Available for work TODO — e.g. 'Taking on new projects from March 2026'

Have something that needs building?

Tell me what you're working on and what's in the way. If I'm not the right person for it, I'll say so — and point you at someone who is.

hello@jesusrtech.com