Jesús Martínez

Senior Software Engineer - Backend

About

Spain

Software Engineering

Scala

Functional Programming

Typelevel Ecosystem

Test Driven Development

Project Collaboration with GIT

Backend

Postgres

MySQL

MariaDB

Mongo

Redis

Kafka

Microservices

DevOps

AWS

Google Cloud

Kubernetes

Ansible

GitOps

Linux Administration

Languages

Spanish (Native speaker)
English (Professional working proficiency)

Interests

Self-hosting

Open Source

Experience

07/2025 - Present

Senior Software Engineer - ICE

ICE Services supports songwriters, enabling societies and publishers to accurately compensate them when their work is used internationally.

Scala with Typelevel ecosystem: cats, cats-effect, http4s, doobie
RESTful APIs
Kafka
Postgres
IaC using pulumi

12/2023 - 07/2025

Parental Leave (Childcare)

Maintained technical proficiency through self-led projects and continued learning.

12/2021 - 12/2023

Senior Software Engineer - LeadIQ

The LeadIQ platform is built to help you prospect smarter and build pipeline faster. As a backend engineer, I develop and maintain microservices in a large platform.

Scala FP with libraries: ZIO ecosystem
GraphQL and RESTful APIs
Deployments to Kubernetes using ArgoCD
Postgres / MongoDB / Redis
Continuous Delivery pipelines in GitLab CI.

04/2018 - 12/2021

Senior Software Engineer - 47 Degrees

47 Degrees is a global technology consultancy. As a consultant, I developed and maintained microservices in a large platforms.

Scala FP with libraries: cats, cats-effect, http4s, mu, doobie, skunk
Microservices architectures
RESTful APIs
Deployments to Kubernetes
Postgres / Redis / HBase / CosmosDB
Continuous Integration including acceptance and performance testing, using Jenkins.

09/2016 - 03/2018

Software Engineer - Stratio BD

Stratio BD is a Generative AI Data Fabric company helping enterprises instantly access the quality data they need for good business decisions. As backend engineer, I worked in a Spark focused platform.

Scala with libraries: play framework, Spark 2.2, cats
Microservices architectures
RESTful APIs
Deployments to Mesosphere DC/OS
Postgres
Continuous Integration using Jenkins.

09/2015 - 09/2016

Junior Software Engineer - Gennion

Gennion Solutions has built Nutshell to Digitalize physical places such as Retail, Shopping Malls, Hotels, Airports, Museums, Petrol Stations or Smart Cities. It detects, identifies, tracks and interacts with people and assets through a combination of location technologies and use cases. As backend engineer, I worked in developing microservices for the platform.

Scala with libraries: dropwizard, Slick
Microservices architectures
RESTful APIs
Deployments to Kubernetes in Google Clould
Postgres
RabbitMQ
Continuous Integration using Jenkins.

10/2014 - 06/2015

Intern - Universidad Politécnica de Madrid

Developer in projects in the area of Future Internet FIWARE and FICORE. Woked in a payment system software, and also a monitoring and accounting system for web services and APIs.

Open Source Projects

Homelab ∙ https://jesusmtnez.es/homelab

06/2021 - Present

my home infrastructure and Kubernetes cluster

Education

Universidad Politécnica de Madrid

09/2012 - 06/2016

Bachelors Computer Software Engineering

Awards

Excellence Academic Grant

Fundación Caja de Ingenieros (associated with Universidad Politécnica de Madrid)

Excellence Academic Grant for the best academic record in the Information and Comunication Technologies area in 2012-2013.

References

Working with Jesus was a blast! He's that rare breed of senior software engineer who's not only a quick learner but also loves getting down to the nitty-gritty details. But what really sets him apart is his ability to explain complex things in a way that just clicks. He's also the ultimate team player, always ready to roll up his sleeves and collaborate. If you're on the lookout for a senior software engineer who's got it all, here's Jesus.

— Daniel Divricean, Team Lead at LeadIQ

Imagine an engineer with less than a year of professional working experience more proficient than the average 5 years worker. That is Jesus. A really quick learner, he's been capable of grasping very complex architectural concepts in record time, that usually take several years to master. Among that he's been able to become an outstandingly proficient Scala programmer (not an easy language to learn when you have almost no "real world" programming background) in less than 6 months. Wow. Being an all terrain professional what I would stress about him is his passion for learning new things and getting deep to the bottom of everything. He feels uncomfortable in front of black magic. And that makes of Jesus a self driven, curious person that doesn't stop until everything is understood. If you hire him I warn you: as soon as I have a chance I'll try to get him back to work in my team again, so you'd better treat him well or you'll loose one of the most valuable assets in your organisation.

— Mariano Navas, Senior Software Engineer

Jesús es un desarrollador de rapidísimo aprendizaje y adaptación. A pesar de su juventud, es capaz de asumir tareas complejas sin ofuscarse. Entiende y da solución a problemas complejos siempre con una sonrisa. Sus amplios conocimientos técnicos le permiten tener una visión muy completa de productos de software complejos.