Berlin / Remote Employment

Ostrom is hiring a Mid-level Backend Engineer (m/f/d)

About the Role

About the Role

We are looking for a skilled Mid-level Backend Engineer to join our growing team, bringing expertise in TypeScript and backend development to help build scalable systems that power our renewable energy solutions. This role offers the opportunity to shape technical decisions, work on greenfield projects, and contribute to a sustainable future.

Responsibilities

  • Design and develop backend systems from the ground up.
  • Contribute to decisions about tools, frameworks, and development processes.
  • Build a scalable platform tailored for the renewable energy sector.
  • Integrate new offerings such as smart meters, dynamic pricing, and EV charging solutions.

Requirements

  • Minimum of three years of professional backend development experience.
  • Extensive hands-on experience with TypeScript.
  • Proven ability to design and implement robust APIs.
  • Strong grasp of relational database concepts and usage.
  • Commitment to writing clean, maintainable, and well-tested code across unit, integration, and end-to-end tests.
  • Experience working on new projects and building systems from scratch.
  • Excellent communication skills with fluency in English.
  • Familiarity with CI/CD pipelines, including tools like Docker and GitHub Actions.

Nice to Have

  • Hands-on experience with AWS services such as ECS, RDS (Aurora), S3, CloudWatch, and Lambda.
  • Experience with React or React Native, or a willingness to learn and support full-stack development when needed.
  • Practical use of AI tools in development workflows for debugging, documentation, or testing—valuing productivity gains without sacrificing engineering rigor.

Benefits

  • Each customer transition helps offset approximately 1.5 tons of CO2 annually compared to the average German energy mix.
  • Hybrid work model with access to a dog-friendly office in Berlin, Mitte.
  • Visa and relocation support available for international candidates moving to Germany.
  • Flat organizational structure with transparent decision-making and inclusive culture.
  • Annual budget allocated for professional growth and development.
  • Regular one-on-one development discussions and biannual development cycles.
  • Monthly team gatherings to foster collaboration and connection.
  • Subsidized gym membership for employees.
  • Provision of a public transport pass.
  • Access to an e-moped or e-bike through providers like Dance or Futurebens, or monthly mobility vouchers.
  • Enrollment in a company pension plan.
  • Opportunities to attend company-wide events.
  • Choice between Futurebens or monthly vouchers as part of employee benefits.
  • Weekly town hall meetings, quarterly business updates, and regular retrospectives ensure open communication.
  • Monthly happy hours, team trips, and company events celebrate shared achievements.
  • Flexible work location including office, home, or remote locations such as Sardinia.

Work Arrangement

Hybrid with flexible remote options, including work from anywhere

Team

Cross-functional team within the Tech department focused on launching new business initiatives and reducing operational workload through scalable technical solutions.

Company Culture

  • Cross-functional collaboration within the Tech team focused on new business initiatives and operational efficiency.
  • Emphasis on transparency, inclusivity, and shared ownership in decision-making.
  • Culture that values thoughtful engineering, clear communication, and continuous learning.
  • Team environment where all voices are heard and contributions are recognized.
  • Regular knowledge-sharing sessions and investment in employee development.

Visa and relocation support available

Scaling your freelance income?

Invoice multiple clients effortlessly

Managing 3+ international clients? Glopay streamlines everything. One EU company, unlimited invoices, automatic compliance. You just send and get paid.

Unlimited clients & invoices
Multi-currency support
Automated tax compliance
Client portal for easy payments
Scale with Glopay
Trusted by 10,000+ freelancers
About company
Ostrom
Germany’s fastest-growing digital green energy provider and a Certified B Corp™, driving the energy transition by making renewable energy more accessible and inclusive through variable tariffs, dynamic pricing, smart EV charging, heat pump and solar optimization, and Germany’s first virtual power plant: NeoGrid™.
All jobs at Ostrom Visit website
Job Details
Department Tech
Category backend
Posted 5 days ago