Backend & Infrastructure Engineer

Навыки

• B2B-продажи
• Решения на данных
• Ответственность за результат
• Python
• Роадмап

О компании и продукте

• This is a backend and infrastructure engineering role at an early-stage B2B SaaS company in the commercial battery storage and renewable energy space. The platform runs physics-based simulations that help installers, wholesalers, and distributors size, plan, and sell large-scale battery projects — replacing manual spreadsheet work with precise, data-driven proposals covering peak shaving, arbitrage, grid services, and more.
• Each simulation compares hundreds of battery configurations across multiple application scenarios, producing millions of data points per run. Compute demand is growing on three axes simultaneously: more users, higher usage per user, and increasingly complex simulations. The company is operating in a market doubling year-over-year, with customers across six European countries — and the goal is to scale the customer base by at least 100x.
• You will be the owner of the entire backend and infrastructure. This is a high-autonomy, high-ownership role at a company that moves fast, minimises meetings, and makes real architectural decisions.

Задачи

• Own and evolve the full backend and infrastructure stack end-to-end
• Ensure service reliability, security hardening, and robust monitoring across all production systems
• Scale compute-heavy simulation workloads to support a rapidly growing user base
• Design and implement backend architecture for high-throughput, numerically intensive applications
• Manage containers, orchestration, queues, and cost control as the system scales
• Optimise performance and compute costs continuously, balancing engineering correctness with shipping speed
• Make and own architectural decisions — including whether the current Python-based engine should be rewritten in another language
• Support new product features and new types of battery application scenarios as the product roadmap expands

Требования

• 5+ years of experience owning and scaling production backend systems under real-world load
• Hands-on experience with web application infrastructure scaling: containers, orchestration, queues, monitoring, performance optimisation, and cost control
• Proficiency in Python, or a strong willingness to work in Python while driving architectural decisions (including potential rewrites)
• Experience designing backend architectures for compute-heavy, numerically intensive applications
• Proven ability to work independently, own projects end-to-end, and make sound architectural decisions with incomplete information
• Experience with service reliability, security, and production monitoring
• Comfort with the pace and ambiguity of an early-stage startup environment
• Fully integrated use of AI tools in your development workflow — with the ability to debug and reason independently when needed

Будет плюсом

• Experience with physics simulations or numerical computing workloads
• Background in energy markets, electrical engineering, or energy management systems

Условия

• Base salary: €110,000 – €150,000 per year
• Equity: 0.5–2.5%, standard 4-year vesting with a 1-year cliff
• LOCATION
• Based in Berlin, Germany. On-site or hybrid working arrangements are available. This role is not fully remote

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