Data Engineer (all genders)

About the Job

Location: Berlin (hybrid, 3 office days per week)
Languages: Fluent in English
Experience Level: 2+ years in software engineering

Your Role in our team

Your Mission

You drive data-driven decision-making by transforming complex data into reliable insights. You take ownership of analytical solutions end to end — from data exploration and model development to deployment, monitoring, and continuous improvement. You work closely with business and engineering stakeholders to ensure transparency, quality, and measurable impact across the platform.

Key Responsibilities

1. Data Analysis & Insight Generation

• Apply statistical and analytical rigor to solve complex business problems.
• Identify patterns and trends in data to support strategic and operational decisions.
• Translate analytical findings into clear, actionable insights for stakeholders.
• Contribute to business dashboards to increase transparency and metric understanding.

2. Machine Learning & Training Data Evolution

• Analyze existing ML structures to identify opportunities for improvement.
• Define and create new training datasets based on observed data patterns.
• Support the continuous evolution of models through data-driven experimentation.
• Ensure datasets are representative, scalable, and aligned with business goals.

3. Data Engineering & Platform Contribution

• Write high-integrity, maintainable code to retrieve, process, and analyze data from diverse sources.
• Examine, validate, and onboard new datasets into the platform.
• Contribute to a rapidly evolving, modern data platform using engineering best practices.
• Stay up to date with modern technologies and data science methodologies.

4. Quality, Reliability & Measurement

• Implement mechanisms to proactively measure and monitor the quality of data outputs.
• Validate assumptions, detect anomalies, and ensure consistency across analyses.
• Improve robustness and reliability of analytical pipelines and models.
• Promote reproducibility, documentation, and clarity in all analytical work.

Your Profile

You are a great fit if you:

• Have 2+ years of experience building production-grade systems.
• Write fast, clean, and maintainable code in TypeScript, Node.js, React.
• Understand backend fundamentals: Hexagonal Architecture, NestJs/Inversify, Express.js, AWS SQS/SNS, Sockets, PostgreSQL, TypeORM.
• Know your way around AWS (ECS/EKS), Docker, Kubernetes, Terraform.
• Have experience with CI/CD pipelines (GitHub Actions, CircleCI).
• Work pragmatically: prefer simple solutions over abstractions.
• Care deeply about testing and long-term reliability.
• Take ownership of what you build — even after it ships.
• Communicate clearly with engineers, product managers, and designers.
• Enjoy working in a lean, fast-moving team with minimal hierarchy.

Nice to have

• Experience with observability (Prometheus, Grafana, Sentry).
• Prior work in distributed systems or microservices.
• Experience with AI-assisted development workflows.

Why marta?

At marta, we build technology that makes high-quality home care accessible, transparent, and human. Our platform connects families and caregivers across Europe, creating trust, dignity, and simplicity in one of the most essential industries: elderly care.

After establishing ourselves as the technological leader in the live-in care market, we are now entering the next growth phase — scaling our product and engineering organization to deliver greater speed, stability, and impact. Our goal is clear: to set the new standard for technology in elderly care.

You’ll join a small, international team of 15 people from five countries, working across Berlin, Austria, Lithuania, and Romania. We love spending time together — from regular team breakfasts and events to office parties and sports. You’ll get 27 days of paid leave, work from the heart of Berlin’s vibrant tech scene, and use the latest tools and tech to build great products. Our culture is hands-on and innovation-driven, giving you real ownership and the chance to help grow and scale a greenfield project from the ground up, focused on machine learning and data-driven products.

About us

Why we founded marta.

When we were seeking 24-hour care for our loved ones, we often felt left alone in this complicated and highly overpriced market. In addition, we became angry when we realized that the agencies were taking most of the salary we paid our caregivers. After five years of unsuccessful search for a reputable agency, in 2020, we took on the mission to improve 24-hour care in Germany and ultimately founded marta.

In memory of Marta, who lovingly helped us care for our grandparents for years, we named the company after her.

We take our mission very seriously.

We firmly believe that caregivers will take better care of our loved ones if we at marta provide them with fair working and living conditions. Our goal is to fundamentally improve the 24-hour care market by building a platform that brings caregivers and families together without any other intermediaries. We enable caregivers to earn a better salary through lower placement fees without families paying more.