Senior Backend / TypeScript Developer (Insights & BI)

Barcelona

Full-time

Permanent employee

Role overview

As a developer on our Insights & Business Intelligence team, you will be the bridge between complex sustainability methodologies and scalable technical solutions. You will handle heavy business logic and calculations, turning raw energy data into actionable intelligence for global enterprises.

Your Challenge

Your primary responsibilities will include:

Implementing Complex Business Logic: Translating sustainability methodologies, carbon accounting standards, and PPA calculations into strict, type-safe TypeScript code.
Building Intelligence Pipelines: Architecting and maintaining data workflows, utilizing PostgreSQL and Redis Streams, to process large volumes of energy data and deliver accurate analytics to our clients.
Designing Scalable Solutions: Analyzing use cases to propose, design, and deploy robust microservices within our GCP/GKE environment.
Code Quality & Optimization: Continually reviewing and optimizing our existing codebase to ensure our reporting and calculation engines remain fast, reliable, and cost-effective.
Client-Centric Problem Solving: Understanding the reporting and intelligence needs of our enterprise clients to propose technical solutions that perfectly balance quality and system performance.

Must-haves

We are looking for a fluent, responsible, and independent programmer who thrives in a collaborative environment. The ideal candidate is:

Experienced: You have a proven track record working on similar data-heavy projects or with similar technologies.
Versatile & Open-Minded: While TypeScript is our core, you are open to using other languages and tools (like Go, Python, or Bash) when they are the best fit for the job.
System-Savvy: You feel completely at home working in a Linux environment and navigating a terminal.
Adaptable: You are comfortable diving into and reading other people's code.
A Great Communicator: You are transparent, ask questions when things are unclear, and possess the humility to ask for help when needed.
Very fluent in English
Local: You are located in or around Barcelona and are able to commute to our office.

Your Benefits

Multicultural & friendly cleantech startup environment
Birthday off — enjoy your special day!
Hybrid & flexible work setup
Free coffee, tea, snacks & fresh organic fruit in the office
Company-sponsored team events twice a year, plus fun after-work activities
Save money with Cobee on meals, transport, and more
Referral bonus program — help us grow the team and get rewarded

Diversity & Inclusion

In Flexidao we embrace diversity by having and promoting an inclusive and diverse environment. Therefore, we are committed to equal opportunity employment regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender, or gender identity or expression.

Recruitment Process

Google Meet interview with our Insights Team Lead
Google Meet interview with our CTO

Apply now before it’s too late!

We don’t offer just a “job”. It’s about building cool stuff that matters, together with a great team.

About us

Flexidao is a clean energy portfolio management platform designed for corporate energy and sustainability teams managing complex clean energy portfolios.

Our software-as-a-service solution aggregates and standardizes volume and contract data on electricity consumption, production, and energy attribute certificates by integrating with data hubs, registries, and third-party providers.

Flexidao is headquartered in Amsterdam and Barcelona, but it has operations globally. Its broad geographical reach enables a complete view of an organization’s portfolio of clean energy contracts, equipping teams with tools for digitizing and automating crucial workflows, monitoring operational and compliance risks, and evaluating advanced procurement strategies.

Our mission is to improve the return on investment of clean energy procurement, significantly reduce manual workload, enhance internal oversight and strategic insight, and ensure timely and confident reporting to stakeholders.