Senior Software Engineer (Expert on Integrations)

Flexidao; Barcelona; Híbrido; EUR 45.000 - 65.000; Jornada completa

Descripción de la vacante

A clean energy platform is seeking a Senior Engineer to enhance its data infrastructure. You will design and scale ETL pipelines ensuring data integrity and performance. The ideal candidate has 5+ years in software engineering, strong TypeScript skills, and experience with cloud providers like GCP. This role offers a hybrid work setup in Barcelona, with flexible conditions and various employee benefits.

Servicios

Multicultural & friendly startup environment

Birthday off

Flexible work setup

Free coffee and snacks

Company-sponsored events

Savings on meals and transport

Formación

• 5 years in software engineering with a focus on data integration.
• Strong coding skills in a modern language, specifically TypeScript.
• Experience with relational databases and query optimization.
• Pragmatic approach to solving complex technical problems.
• Hands-on experience with cloud platforms, preferably GCP.

Responsabilidades

• Design, build and maintain scalable ETL/ELT pipelines.
• Ensure data quality, integrity, and performance.
• Implement complex data transformations and business logic.
• Collaborate with product managers to deliver data solutions.

Conocimientos

Data integration

ETL development

Backend systems

Problem-solving

Team collaboration

Programming in TypeScript

Database mastery in MySQL

Cloud provider experience (GCP preferred)

Container orchestration using Kubernetes

Descripción del empleo

Role overview

At Flexidao we are building the data infrastructure to power the future of the energy sector. Our platforms ability to ingest process and analyze vast amounts of Meter and Energy Attribute Certificate (EAC) data is core to our mission. We are looking for a passionate Senior Engineer to own and scale the data backbone of our platform ensuring a reliable and timely flow of data that powers our products and insights.

Work setup

Hybrid (1 day / week in-office for Barcelona-based candidates; full remote for the rest of Spain).

Applicants must possess a validauthorizationtoworkinSpain as visasponsorshipisnotavailable for this position.

Your Challenge

Own the End-to-End ETL Lifecycle: You will design build and maintain robust and scalable ETL / ELT pipelines to process data from diverse sources including third-party APIs, databases, message queues and flat files.

Build for Scale and Reliability: Ensure the highest standards of data quality, integrity and performance. You will be responsible for monitoring, security and operational excellence of our data integration systems.

Solve Complex Data Challenges: Implement sophisticated data transformations and business logic to turn raw data into actionable information that drives product features and critical business decisions.

Collaborate and Lead: Work closely with product managers and other engineers to define requirements and deliver high-impact data solutions.

• Drive Technical Excellence: Contribute to a high-quality codebase through thoughtful code reviews, comprehensive documentation and a commitment to continuous improvement. You will keep abreast of new technologies and trends to evolve our data stack.

Must-haves

Experience: 5 years in software engineering with a demonstrated focus on data integration, ETL development or backend systems.

Programming Proficiency: Strong coding skills in a modern language. Proficiency in TypeScript is required for this role.

Database Mastery: Strong command of relational databases (MySQL) including data modeling and query optimization.

Problem Solving: A pragmatic and tenacious approach to solving complex technical problems with the ability to work effectively both independently and within a team.

Cloud & DevOps: Hands‑on experience with a major cloud provider (GCP preferred) and container orchestration using Kubernetes.

Nice-to-have

• Architectural Vision: Experience with microservices architecture and distributed systems.
• Domain Knowledge: Previous experience in the Energy FinTech or another data‑intensive industry.
• Modern DevOps: Knowledge of CI/CD principles and experience building and maintaining automated testing frameworks.
• Observability: Familiarity with modern monitoring and logging tools (e.g. Prometheus, Grafana, ELK stack).
• Data Orchestration: Experience with workflow orchestration tools like Airflow or Prefect.
• API Fluency: Deep understanding of RESTful API design and security standards (OAuth, JWT).

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 to 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 HR

Google Meet Technical Interview with our CTO and Backend Team Lead

Optional Follow-up Interview with our CTO and Backend Team Lead

Apply now before its too late!

We dont offer just a job. Its about building cool stuff that matters together with a great team.

If you see yourself working with us and can meet the key requirements send your CV to join Flexidao to

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 organisations 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.

Key Skills: Spring, .NET, C / C++, Go, React, OOP, C#, AWS, Data Structures, Software Development, Java, Distributed Systems

Employment Type: Full‑Time

Experience: years

Vacancy: 1