Your mission
Role purpose
We’re looking for a backend developer to join the engineering team behind our Optimization Engine — a core product that does the smart management of batteries, renewables, and energy systems to cut costs and carbon. If writing clean, scalable APIs and wrangling real-world data sounds like your kind of thing, let’s talk.
What You’ll Be Doing
- ▪Designing and building reliable backend services and RESTful APIs using Python and FastAPI.
- ▪Collaborating on a tool for optimizing energy systems, batteries, and renewables — yes, the kind that help fight climate change.
- ▪Helping shape and evolve our system architecture (microservices), including proposing a concept for the next stages of product development.
- ▪Reviewing code, writing tests, and generally making the codebase a better place.
- ▪Helping maintain our CI/CD pipelines, Dockerized environments, and cloud infrastructure (AWS).
Tech Stack You’ll Touch
- ▪Languages & Frameworks: Python, FastAPI
- ▪Infrastructure: Docker, Git, AWS (Lambda, ECS, S3, CloudWatch, SQS)
- ▪Databases: PostgreSQL, InfluxDB
- ▪Practices: Agile, Continuous Delivery, Automate-All-The-Things
Your profile
Required Skills
·min 4years of professional software development experience.
- ▪Strong Python programming skills with OOP principles.
- ▪Experience building REST APIs using FastAPI.
- ▪SQL database experience.
- ▪Strong unit testing skills.
Nice to Have
- ▪Experience with Docker and application containerization.
- ▪Experience with AWS services.
- ▪GitLab/GitHub CI/CD pipeline experience.
- ▪Experience with monitoring, logging, and observability tools.
- ▪Experience with message brokers (SQS, RabbitMQ).
- ▪Familiarity with time series databases (InfluxDB/Timestream).
- ▪Background in energy systems or data processing.
Why us?
- ▪Motivating salary package.
- ▪Quarterly bonuses & Sales Commissions
- ▪Exciting Industry Sector which is full of innovations
- ▪Professional growth, educational support and team growth opportunities
- ▪25 days of vacation and 5 sick days.
- ▪Human-centric approach and team support.
- ▪Opportunity for international training.
- ▪Flexible, hybrid working hours (offices in Brno, Brumov-Bylnice and home office).
- ▪Meal and phone allowance.
- ▪Company events (Czech and Great Britain colleagues)
- ▪Multisport card, fruit days
About us
Wattstor is a next-generation energy company accelerating Europe’s transition to net zero. We
specialise in delivering renewable energy systems, on-site energy optimisation, and dynamic tariffs for
businesses across the continent. Our mission is to make sustainable technology not only accessible
but also simple and impactful.
Backed by years of R&D and real-world deployment, Wattstor’s smart energy solutions are fast to
implement, easy to manage, and built to reduce both costs and carbon emissions.