Zigor López — Software Engineer

Simplicity leaves room for appreciation

Applying "Less is more" to software engineering.

Experience

Sep 2022 — PresentRemote

DEHN digital solutions GmbHSoftware Engineer

Migrating a legacy platform to a microservices architecture, across both the services and the front ends that consume them.

Replaced a legacy Spring and Angular platform with NestJS microservices, now released and running in production.
Owned the full vertical on the migrated pieces — the NestJS services and the Vue front ends built on them — rather than one side of an interface.
The rewrite removed a substantial amount of accumulated technical debt and improved the platform’s performance.

Dec 2021 — Aug 2022Remote

Wise Security GlobalSoftware Engineer

Building a distributed, blockchain-based identity provider.

Java services for a distributed identity provider, integrating with an application on the Solana blockchain.

Apr 2021 — Nov 2021Bilbao, Spain

everisSoftware Engineer

Open banking product development and deployment.

Nov 2019 — Mar 2021Bilbao, Spain

EntelgySoftware Engineer

Backend development in Spring under a microservices architecture, for the e-mobility industry.

Spring services for the platform that controls electric-vehicle charging infrastructure.

May 2017 — Oct 2019Bilbao, Spain

DOMINION GLOBALFull-stack Developer

Full-stack development of Alert, a RegTech product for the banking and insurance industry.

Built KYC, regulatory reporting and risk scoring for a compliance platform used by banks and insurers.
Worked across the whole stack — a Spring Boot monolith and the React front end on top of it.

Skills

LanguagesDaily first, then fluent enough to be useful.

TypeScript
JavaScript
Rust
Java
SQL

Product front-endAccessible, fast, no framework religion.

React
Next.js
Design systems
Accessibility
Vue
Angular

Backend & dataBoring architecture, carefully chosen.

NestJS
Node.js
Spring Boot
PostgreSQL
Kafka

Platform & practiceHow the work reaches production.

Docker
Terraform
AWS
GitHub Actions
OpenTelemetry
Supply-chain security

Projects

ProductProductioncvThis site: a CV that renders itself twice, once for a person and once for a parser.

ProductProductiongpoolA real-time football pool platform: private pools, live scoring, and an auditable trail of every point.gpool.zigordev.com

ProductIn developmenttrading-botA trading platform split between a Rust hot path and a TypeScript control plane with an operator console.

ProductProof of conceptkiniThe first football pool platform, and the one that taught me what gpool needed to be.

Coreplatform-opsThe shared operations stack every other project attaches to instead of rebuilding.

CorenotificationsA Kafka-backed email service the other products delegate delivery to, with idempotency and crash recovery built in.

Coredesign-systemA technology-agnostic token and component library three products share without agreeing on a CSS framework.

Education

2026 — Present

B.Sc. MathematicsUNED

2013 — 2017

B.Sc. Computer ScienceUniversity of the Basque Country

Languages

SpanishNative

BasqueNative

EnglishFluent

Experience

Software Engineer

DEHN digital solutions GmbH | Remote | Sep 2022 — Present

Migrating a legacy platform to a microservices architecture, across both the services and the front ends that consume them.

Replaced a legacy Spring and Angular platform with NestJS microservices, now released and running in production.
Owned the full vertical on the migrated pieces — the NestJS services and the Vue front ends built on them — rather than one side of an interface.
The rewrite removed a substantial amount of accumulated technical debt and improved the platform’s performance.

Software Engineer

Wise Security Global | Remote | Dec 2021 — Aug 2022

Building a distributed, blockchain-based identity provider.

Java services for a distributed identity provider, integrating with an application on the Solana blockchain.

Software Engineer

everis | Bilbao, Spain | Apr 2021 — Nov 2021

Open banking product development and deployment.

Software Engineer

Entelgy | Bilbao, Spain | Nov 2019 — Mar 2021

Backend development in Spring under a microservices architecture, for the e-mobility industry.

Spring services for the platform that controls electric-vehicle charging infrastructure.

Full-stack Developer

DOMINION GLOBAL | Bilbao, Spain | May 2017 — Oct 2019

Full-stack development of Alert, a RegTech product for the banking and insurance industry.

Built KYC, regulatory reporting and risk scoring for a compliance platform used by banks and insurers.
Worked across the whole stack — a Spring Boot monolith and the React front end on top of it.

Projects

cv | Product | Production

Solo — product

This site: a CV that renders itself twice, once for a person and once for a parser.

Stack: Next.js, Tolgee, OpenBao, Kafka

The PDF is generated at build time rather than in the browser. Client-side html-to-PDF libraries rasterise the page, destroying the selectable text the entire ATS layout exists to produce.
Nothing it publishes carries a way to reach a person directly. The contact form reaches the same inbox through a secret held in OpenBao, so no address appears in the page, the PDF or the structured data.

gpool | Product | Production

Solo — platform, API & web

A real-time football pool platform: private pools, live scoring, and an auditable trail of every point.

Stack: Next.js, NestJS, Postgres, Kafka

Secrets are fetched at boot by a wrapper process, never baked into an image or committed to an env file, so a leaked app token exposes one kv path rather than the whole store.
Email is an event, not a call. The API publishes to a topic and a shared service owns delivery, idempotency and dead-lettering.
CI regenerates the web API contract from the running API and fails on drift, so client and server cannot disagree silently.

gpool.zigordev.com

trading-bot | Product | In development

Solo — Rust & TypeScript

A trading platform split between a Rust hot path and a TypeScript control plane with an operator console.

Stack: Rust, TypeScript, Next.js, Postgres

Backtesting and live execution consume the same strategy crate, so a result that cannot be reproduced offline is a bug rather than a mystery.

kini | Product | Proof of concept

Solo — API & web

The first football pool platform, and the one that taught me what gpool needed to be.

Stack: Next.js, NestJS, Postgres, Tolgee

Kept as its own repository rather than folded into gpool, so the rewrite could change its mind about the architecture without rewriting history.

platform-ops | Core

Solo — infrastructure

The shared operations stack every other project attaches to instead of rebuilding.

Stack: Terraform, Docker Compose, OpenBao, Redpanda

Per-application OpenBao policies scoped to exactly one kv path, so an app token is useless against any other app.
The same compose manifests describe local and production, so a local reproduction is a real reproduction.

notifications | Core

Solo — backend

A Kafka-backed email service the other products delegate delivery to, with idempotency and crash recovery built in.

Stack: NestJS, Kafka, Postgres, Handlebars

Invalid payloads fail as non-retryable and go to a durable dead-letter record, because retrying a malformed message forever is a worse outcome than losing it loudly.
A versioned topic name, so a contract change is a new topic rather than a silent break for every producer.

design-system | Core

Solo — design & code

A technology-agnostic token and component library three products share without agreeing on a CSS framework.

Stack: React, CSS custom properties, oklch

Themes override colour only. Shape, type scale and spacing stay on shared base tokens, so every product renders identical geometry and differs solely in paint.
Vendored into each consumer rather than published as a package: the products are private and a copy keeps the dependency graph flat.

Simplicity leaves room for appreciation

Summary

Experience

Software Engineer

Software Engineer

Software Engineer

Software Engineer

Full-stack Developer

Skills

Projects

cv | Product | Production

gpool | Product | Production

trading-bot | Product | In development

kini | Product | Proof of concept

platform-ops | Core

notifications | Core

design-system | Core

Education

B.Sc. Mathematics

B.Sc. Computer Science

Languages