
Jose M. Valera Reales
Engineering Manager at Kombo · Berlin, Germany
About
- 15+
- years building software
- 5+
- years leading teams
15+ years building software. 5+ years leading teams. Still writing code daily.
I specialize in layered software architecture and modular monoliths. Systems designed to last without fighting themselves. TDD and SOLID aren’t rules I follow; they’re how I think.
A big part of my work involves AI agents. I treat them like a team of specialists: each with a clear role, defined constraints, and quality standards that don’t bend for deadlines. The same discipline I apply to human teams, I apply to AI ones.
The best code is often the code you don’t write. The best teams are the ones where psychological safety makes everyone sharper. I care about both.
"Chema is well ahead of the curve on AI. While most teams are still debating where to start, Chema already has multiple agents running in production."
Experience
Engineering Manager at Kombo
Nov 2026 to now
I lead four engineers in the employee lifecycle team, together with a dedicated product manager. We maintain and expand our HRIS system, build KomboAI and work on support enablement.
Product Engineer Jun 2026 to Oct 2026
Kombo is the leading unified API for HRIS, ATS, Payroll, and LMS integrations. Built product at the intersection of engineering and customer needs, enabling B2B companies to connect hundreds of HR systems through a single API.
TypeScript · React · Tailwind · tRPC · Prisma · PostgreSQL · Redis · Terraform
Tech Lead at Purpose Green
Mar 2025 to Jun 2026
Drove the migration of our Laravel API into a modular monolith with DDD boundaries: independent domain modules that scale across teams without cross-coupling. Player-coach: ship production code daily while growing engineers through mentoring, monthly katas, and XP practices (ownership, mastery, purpose). Backend systems supporting the mission of decarbonizing every European building.
Software Developer Jul 2024 to Mar 2025
Senior Backend Engineer. Payment system integration with Stripe. Promoting Extreme Programming values, principles, and practices. Monthly code katas, focus on individual and team excellence.
PHP · Laravel 12 · Pest · PHPStan · PostgreSQL · Docker · AWS (EC2, S3, RDS) · DataDog
Head of Engineering at ABOUT YOU
Head of Engineering overseeing 3 teams (12 engineers): DevOps, external & internal API integrations. Led SDK team shipping new payments API. Championed Extreme Programming: pair programming, TDD, code katas. Cross-team mentoring, coaching, interviewing and hiring.
PHP · Symfony · PHPUnit · PostgreSQL · Redis · RabbitMQ · K8s · EC2
Tech Lead at Lautsprecher Teufel
Jul 2021 to Jul 2023
Lead of the Web-IT team (6 engineers) responsible for the Webshop. Coaching developers on their journey to the next level, while cultivating a culture of ownership, customer centricity, mastery, and purpose.
Software Developer Jun 2020 to Jul 2021
Responsible for the development of the Webshop across different countries. Promoting Extreme Programming with Pair-Programming and TDD.
PHP · Spryker · PHPUnit · PostgreSQL · Redis · ElasticSearch · RabbitMQ · Docker
Software Developer at Seven Senders
Part of the internal Analytics team (5 engineers), focused on the Backend API service for the parcel tracking solution.
PHP · Symfony · Go · Java · MySQL · ElasticSearch · Docker · EC2
Software Developer at Move24
Responsible for the homepage and search.
PHP · Laravel · Go · PostgreSQL · Redis · Docker
Software Developer at Webgears
Backend of the web application and internal tools.
PHP · Symfony · MariaDB
Software Developer at Falk medizinische Datenverarbeitung
Built the web app for the desktop medical application.
PHP · Delphi · MySQL
Software Developer at LEVERADE
Full stack developer, part of the web development application team.
PHP · Laravel · Android · MySQL
Software Developer at Tecnoavanza Internship
Software development for mobile platforms. First contact with Symfony in a professional environment.
PHP · Symfony · MySQL
Recommendations
"I worked with Chema for almost two years at Purpose Green. We started together as Senior Backend Engineers, and he later became our Team Tech Lead. Chema is one of the most professional leaders and colleagues I have ever worked with.
He has solid experience in PHP and team management, but what I appreciated most was how supportive he was. He was always there to help the team and made sure we had everything we needed to succeed. He is a great leader and a great person."
"Chema is the best team lead I have ever worked with. He has a real talent for motivating the whole team to grow, try new things, and stay curious about modern tools and ideas.
For him, collaboration and communication are the key to everything. He builds an environment where people feel safe to share ideas, ask questions, and learn from each other. You can feel that he really cares about the team, not only about the results.
Chema also led our integration of AI tools and helped the whole team fall in love with agentic coding. He shared patterns, ran sessions, and showed us how to use these tools in a smart and structured way, not as hype, but as a real part of how we ship software.
Any team that gets Chema as a lead is very lucky. He makes people around him better engineers and better teammates."
"I've worked with Chema twice, first at Seven Senders (2017-2019), and again at Purpose Green as my counterpart on the tech side.
What makes Chema rare is that he doesn't hide behind roadmaps or architecture diagrams. He gets into the details when it matters and refuses to use process as an excuse to slow things down. Agile isn't a methodology to him, it's how he works, which makes him unusually easy to build with from a product seat.
He's also well ahead of the curve on AI. While most teams are still debating where to start, Chema already has multiple agents running in production.
If you want a tech lead who pairs sharp engineering instincts with a real appetite for what's next, Chema is the one."
"Chema is a great engineer and knows how to create value from get go. He was proactive, resourceful, and knew how to navigate extreme complexity, demonstrating clear leadership skills. He not only adhered to agile principles, but also lifted his co-workers by coaching them."
"Chema is a great leader, speaker, and impactful contributor! He always balances clean code, testing, and software design with pragmatism while delivering value to the customer. With a truly agile mindset, he is capable of helping your tech organization reach the next level."
"Chema is an impressive person to work with and to be inspired by. His coding skills were already outstanding when I hired him, principles like SOLID or approaches like TDD were mastered and embraced by heart already. This turned out to even be surpassed by his incredible learning mindset. One of a kind, a perfect addition to any a-team."
"Working with Chema for the last three years was a powerful experience. Driven by curiosity he always challenged himself, me and the team. Trying new ways and improving long existing processes was a daily manner for him. I know his new team will be in good hands!"
"Chema is a highly motivated and capable developer with a keen eye for detail and is always striving to improve himself, the projects he works on and the colleagues he works with. He drives change when it's needed, is a keen collaborator and a delight to work with."
"Chema has a great passion for testing and refactoring. He is easy to approach, always ready to help and listen, very patient and nice. He is also happy to be your rubber duck when you want to practice a talk or a coding demo. If you feel tired or stressed, Chema makes you see the fun side of coding again."
"He was the 'Tony Stark' of our team. He is smart, reliable, and best known for building flawless solutions."
"When he decided to leave, I knew it'll be a big loss for the team since he's been always keen on delivering quality work, learning, adapting and teaching others, maintaining a proper test suite, and delivering on time. Very good guy ;)"
"Working with Jose is a pleasure not only in technical side but also in every-day life. Cheerful, open, convivial person. Knows and follows modern best practices, understands the pillars of Software development."
"Whoever hires Jose will not only get a programmer with strong technical skills, but also a great colleague with good sense of humor and great interpersonal skills. What impressed me the most was his enthusiasm to improve himself."
"He is a very valuable member of the team with strong passion for work and a really hands-on 'get things done' approach. He writes very clean code, effectively applies best practices, can dig into very complex problems and simplify them."
"José always produced top-line quality work. He worked well with all the other developers, and carried out his responsibilities efficiently. Always ready with a smile."
"I was impressed by Jose Maria's ability to acquire the knowledge of the different subjects. His ambition and productivity was the reason why he was my partner for the final project."
"He is a really professional and nice guy, loyal and faithful. He worked always hard and concentrated. He is an enrichment, professional and personal."
Products
My own product, designed, built, deployed, and operated end to end.
miaforo
Gym management for independent gyms. Schedules, bookings, payments, members, and progress in one product.
miaforo
Creator & operator. Gym management for independent gyms: schedules, bookings, payments, members, and progress.
Open Source
GitHubPhel Lang
Functional programming language that compiles to PHP. A Lisp dialect inspired by Clojure with persistent data structures, macros, and a REPL.
bashunit
Testing library for bash scripts inspired by PHPUnit. Brings quality testing practices to shell scripts and CI pipelines.
Side Project of the Year 2023
agnostic-ai
One source of truth for AI agents, skills, rules, and hooks. One sync writes the native files every AI CLI reads.
Phel Lang · 536★
Core Maintainer. Functional language that compiles to PHP. Lisp dialect inspired by Clojure.
bashunit · 441★
Creator & Maintainer. Testing library for bash scripts. Side Project of the Year 2023.
agnostic-ai · 27★
Creator & Maintainer. One source of truth for the config of every AI coding tool.
Talks
35+ talks and workshops since 2021. International conferences, meetups, and software craftsmanship communities.
Talks- 2022 to 2026Berlin / Munich
International PHP Conference
TDD, refactoring, Phel, AI co-pilot, pair programming workshops
- 2023Berlin
WeAreDevelopers World Congress
Phel Lang, Extreme Programming
- 2023Poznan
PHPers Summit
Phel Lang
- 2022Hamburg
Code Talks
Update Your Team to be More Extreme
Writing
Blog70+ posts published on chemaclass.com on agentic coding, engineering leadership, craftsmanship, and modular architecture.
- AI Series
- Leadership & Teams
- Software Craftsmanship
- Agile & XP
Skills
Languages & AI
- PHP
- TypeScript
- Bash
- Go
- Claude
Frameworks & Tools
- React
- Laravel
- Symfony
- PHPUnit
- PHPStan
Data & Infrastructure
- PostgreSQL
- Redis
- Prisma
- MySQL
- Docker
Practices & Leadership
- TDD
- Leadership
- XP
- Mentoring
Education
CIFP Carlos III
Higher Technician in Web Applications Development
PHP · MySQL · Javascript
IES Ginés Pérez Chirinos
Higher Technician in Multi-platform Applications Development
Java · Oracle SQL · Android
Certifications
Erasmus+ Programme
Via ENAE Business School (Murcia) → Lübeck, Germany
Professional placement in Germany (combined with work at Falk medizinische Datenverarbeitung).
Awards
bashunit: Side Project of the Year
Winners of the Side Project of the Year, 2023.
First award as student
First award of study aids for the best result in the Higher Level category of Multi-platform Applications Development.
Languages
- Spanish C2 Native
- English C1 Full professional
- German B1 Limited working