Senior Software Engineer (Python and GCP)

The company and our mission:

Zartis is a digital solutions provider working across technology strategy, software engineering and product development.

We partner with firms across financial services, MedTech, media, logistics technology, renewable energy, EdTech, e-commerce, and more. Our engineering hubs in EMEA and LATAM are full of talented professionals delivering business success and digital improvement across application development, software architecture, CI/CD, business intelligence, QA automation, and new technology integrations.

We are looking for a Senior Software Engineer (Python & GCP) to work on a project in the home energy optimization industry.

The project:

Our teammates are talented people that come from a variety of backgrounds. We're committed to building an inclusive culture based on trust and innovation.

You will be part of a distributed team developing new technologies to solve real business problems.

Our client is a climate-tech startup on a mission to make rooftop solar more effective and affordable. They've developed a platform that uses real-time data and machine learning to optimize home energy storage-helping reduce carbon emissions, lower energy costs, and increase accessibility to solar energy for more households.

What you will do:

- Developing and maintaining scalable backend services using Python on Google Cloud Platform.

- Contributing to the data infrastructure, working with tools such as Firebase, BigQuery, Cloud SQL, and Cloud Run.

- Managing and enhancing Terraform-based infrastructure and CI/CD pipelines via GitHub Actions.

- Handling sensitive energy usage data with a strong emphasis on privacy, security, and GDPR compliance.

- Taking technical ownership of a core area (e.g., device connectivity or the simulation engine).

- Collaborating closely with product and engineering teams to ship quickly, learn continuously, and iterate frequently.

- Helping to shape engineering practices as the company scales - they currently follow a Kanban model and foster a culture of high trust, high ownership, and low ego.

What you will bring:

- At least 4 years of experience in a backend or full-stack engineering role.

- Strong Python proficiency, and experience with cloud-based infrastructure (GCP preferred).

- Solid experience working with and optimizing relational databases.

- Familiarity with infrastructure-as-code (e.g., Terraform), CI/CD pipelines (GitHub Actions), and containerized deployments (Cloud Run, Docker).

- A security-conscious mindset, especially when working with personal or high-value data.

- A pragmatic engineering approach - you know when to move fast and when to invest in long-term scalability and resilience.

- Excellent communication skills and a collaborative, low-ego attitude - you enjoy working in small, mission-driven teams.

- A clear motivation for climate impact and a desire to build real-world solutions that matter.

Nice to have:

- Experience working in early-stage startups or small, cross-functional teams.

- Familiarity with data engineering, time-series data, or IoT systems.

- Interest in renewable energy, home energy systems, or hardware integration.

- Open-source contributions or side projects that reflect your technical thinking and creativity.

What we offer:

- 100% Remote Work.

- WFH allowance: Monthly payment as financial support for remote working.

- Career Growth: We have established a career development program accessible for all employees with a 360º feedback that will help us to guide you in your career progression.

- Training: For Tech training at Zartis, you have time allocated during the week at your disposal. You can request from a variety of options, such as online courses (from Pluralsight and Educative.io, for example), English classes, books, conferences, and events.

- Mentoring Program: You can become a mentor in Zartis or you can receive mentorship, or both.

- Zartis Wellbeing Hub (Kara Connect) : A platform that provides sessions with a range of specialists, including mental health professionals, nutritionists, physiotherapists, fitness coaches, and webinars with such professionals as well.

- Flexible Working schedule .

- Multicultural working environment: We organize tech events, webinars, parties, and activities to do online team-building games and contests.