gridX GmbH

Junior Software Engineer - Platforms (all genders)

Germany remote Mid Salary not listed
remote Mid level Technology & IT Curated
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About the role

Your impact at gridXAs a Junior Software Engineer on the Platforms Team, you’ll play a key role in bridging the gap between external cloud ecosystems and the gridX platform. As part of the Cloud Connector team, your work is the bridge between the gridX platform and the outside world. You will build and maintain the backend services that allow us to seamlessly integrate with external energy providers. Your code will turn complex, varied external APIs into standardized, reliable connections that the rest of our engineering organization relies on. By developing robust APIs and smart integration tools, you empower gridX to onboard new cloud assets faster, making energy management seamless for our customers and platform partners alike.
Are you ready to #makeamark, #getshitdone, and build the future of energy? Apply now and join our mission!

Please note: We only accept applications from candidates who are currently located in Germany.

How you can contribute to gridXWhat you’ll work on

Integrations with partners: Your primary focus is seamlessly integrating various cloud providers into our ecosystem. This involves implementing and maintaining Go services that abstract away provider-specific edge cases, allowing us to reliably gather measurements and send control commands. You'll work closely with API specs, frequently leveraging AI coding tools to accelerate your implementation and review cycles.
Fast scaling: You’ll engineer solutions for a fast-scaling platform handling around 20.000 cloud-connected assets. With our managed fleet growing over 80%  the past 6 months, you’ll play a critical role in designing architecture that handles heavy telemetry and real-time control at scale.
Cross-team Collaboration: The Cloud Connector is the critical bridge connecting physical devices to gridX’s wider platform architecture. You'll build the cloud integrations that link assets to our platform, ingest asset data for various services, and route real-time execution commands back to the assets via cloud providers.

We use AI-assisted and agentic coding workflows extensively, from code generation and review to spec analysis and test creation. You'll be expected to leverage these tools effectively and help actively shape our evolving engineering culture.

Day-to-day, that means

Implementing new cloud integrations based on API documentation, OAuth specifications, and webhook contracts.
Evolving the integration framework, refactoring event-processing chains, migrating data stores, and shaping the abstractions that make future integrations simpler.
Debugging distributed pipeline failures using structured logs, distributed traces, and metrics, across OAuth flows, webhook processing, and event delivery.
Writing tests that cover provider API contracts, webhook edge cases, command delivery reliability, and distributed failure modes.
Contributing to API specifications (TypeSpec/OpenAPI, protobuf/gRPC) that connects to downstream gridX services and external partners.
Collaborating with cloud API teams, Product Owners, Platform Engineers, and Energy Domain Experts.

This is how you and your application stand outWhat matters beyond code

Pragmatism over perfection: You ship working software, iterate, and don't gold-plate.
Product thinking: You care about what your code enables for users and partners, not just the code itself.
Interest in the domain: You find renewable energy hardware fascinating if you're curious. You don't need prior energy sector expertise, but genuine interest is important.
End-to-End ownership: You follow through from “it compiles” to “it runs in production.” You embrace a “you build it, you run it” mindset, deploying, operating, and monitoring your own services on our Kubernetes cluster using automated CI/CD pipelines.
Tech Stack: You work with Go • Linux • Docker • Kubernetes • gRPC • Protocol Buffers • PostgreSQL • AWS • CI/CD • Nix

Nice to have

Familiarity with electrical engineering concepts (power, current, phases)
Familiarity with running Go backend workloads in Kubernetes
Experience with IoT or embedded-adjacent systems
Contributions to open-source Go projects
German language skills (team is mixed EN/DE, English is working language)

Why gridXWe believe great work happens when people have the freedom, support, and flexibility to do their best work. That’s why we offer a benefits package designed to support your work, wellbeing, development, and life outside of work.

Flexible & mobile working: Work remotely for up to 70 days per year from anywhere in the EU and selected countries outside the EU.
Vacation: Enjoy 30 days of vacation plus an additional half day off on December 24 and December 31.
Health & sports: Get a €30 monthly allowance for Urban Sports Club or EGYM Wellpass, plus access to company health management and mental health support.
Personal development: Benefit from cross-functional coaching, e-learning platforms, and an annual development budget of €1,500.
Employee discounts: Enjoy exclusive offers and discounts through gridX Corporate Benefits.
JobRad: Lease a bike through our JobRad program and combine sustainable commuting with an active lifestyle.
Company pension plan: Receive a fair monthly employer contribution to your company pension plan.
Mobility support: Get a €30 monthly subsidy for your public transportation ticket.
Modern workplace: Work from our offices in the heart of Aachen or Munich with modern IT equipment of your choice.
Team events & culture: Experience the gridX culture through regular team events, plus an additional €100 annual budget for department events.
Birthday donation: We donate €20 to a charity of your choice on your birthday.
Sabbatical option: Take an extended break for personal projects, travel, further education, or simply to recharge.

*Please note that our benefits may differ for employees working 100% remotely.
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Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT API integration MySQL Sales Writing Mid level remote

Likely questions

  1. Tell us about work you have done that is close to the Junior Software Engineer - Platforms (all genders) role.
  2. How would you approach your first 30 days at gridX GmbH?
  3. Which of API integration, MySQL and Sales have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you stay organised and communicate clearly when working remotely?

Prepare before the call

  • A recent example that proves your experience with API integration, MySQL and Sales.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Junior Software Engineer - Platforms (all genders) role because I can bring practical experience in API integration, MySQL and Sales, learn the team quickly, and contribute to the outcomes gridX GmbH needs from this hire.

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