Senior/Lead Backend Engineer

Accountabilities:

You will own the design, development, and operation of critical backend systems, working across AI infrastructure, energy data, billing, and trading technologies to deliver reliable and scalable solutions.

• Design, build, and maintain complex backend systems from initial architecture and implementation through production deployment and ongoing optimization.
• Develop the inference layer supporting AI workloads, serving millions of prompts per day across customer support and meter-reading optical character recognition (OCR).
• Migrate AI workloads to proprietary GPU infrastructure, improving control over performance, scalability, and computing resources.
• Build systems that process energy settlement data, supporting continuous recalculation as new information becomes available, even months after energy delivery.
• Develop and enhance real-time billing infrastructure, including per-customer transaction ordering, idempotency, audit trails, and pricing based on half-hourly meter readings.
• Build and extend energy trading and hedging systems supporting forward markets, portfolio optimization, and reconciliation with directly accessed exchanges.
• Ensure backend services meet high standards for availability, reliability, scalability, and data integrity.
• Collaborate closely with product teams to translate business requirements into effective technical architectures and production-ready solutions.
• Take ownership of technical decisions, identify system improvements, and deliver complex engineering projects with a high degree of autonomy.

Requirements:

The ideal candidate is an exceptional software engineer with a proven ability to design and deliver complex, highly available production systems. You should demonstrate strong technical judgment, clear communication, and the ability to take ownership of challenging engineering problems.

• Demonstrable excellence in software engineering, with strong problem-solving and system design capabilities.
• At least 3 years of software engineering experience, with expectations adjusted according to the seniority and scope of the position.
• Proven ability to define, architect, and build complex backend systems.
• Hands-on experience developing, deploying, and maintaining highly available production systems.
• Strong understanding of backend architecture, reliability, scalability, and production engineering practices.
• Ability to work independently, make sound technical decisions, and take ownership of systems throughout their lifecycle.
• Clear communication skills and the ability to collaborate effectively with product and engineering stakeholders.
• Experience with infrastructure as code, such as AWS CDK, is a plus.
• Previous experience in the energy sector is advantageous.
• Experience delivering consumer-facing products is also a plus.

Benefits:

• Competitive compensation: Attractive salary package with eligibility for equity.
• Biannual bonuses: Additional performance-based bonus opportunities twice a year.
• Technology allowance: Fully expensed technology and equipment tailored to your needs.
• Private health insurance: Healthcare coverage, with details varying by location.
• Meal allowances: Breakfast and dinner allowances for office-based employees.
• International opportunities: Remote positions available across the United States, Germany, Switzerland, the Netherlands, Poland, and France.
• Meaningful technical impact: The opportunity to build critical infrastructure for a more affordable and efficient energy system.
• Engineering ownership: Significant autonomy to design, develop, and operate complex systems using modern technologies.