Senior Backend Engineer: VPP & Energy Markets (Hybrid)

Capalo AI; Helsinki; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Relocation support

Job summary

Capalo AI seeks a Senior Backend Engineer to own backend systems for Capalo Zeus VPP™, enabling grid-scale battery storage across European markets. You will design, implement, and operate production-grade services with end-to-end ownership.

You will build integrations using REST, MQTT, and IEC-104, and craft cloud-native infrastructure on AWS. You will impact forecasting, scheduling, and dispatch pipelines while improving reliability and observability.

Qualifications

• Significant experience building and operating production backend systems where reliability, maintainability, and correctness matter.
• Strong hands-on Python and modern backend engineering, including APIs, asynchronous processing, and event-driven architectures.
• Experience designing production systems, including service boundaries, APIs, failure handling, and operational ownership.
• Production experience with AWS or another major cloud platform.
• Comfort working across backend engineering, infrastructure, data, and domain logic in technically ambiguous environments.

Responsibilities

• Design and build backend services for asset monitoring, schedule generation, command delivery, and battery dispatch.
• Develop integrations with asset-side systems and market interfaces using REST APIs, MQTT, and IEC-104.
• Build cloud-native infrastructure on AWS, including event-driven services, storage layers, deployment tooling, and operational foundations.
• Develop the backend foundations that support forecasting and optimization pipelines, with a focus on data quality, traceability, replayability, and safe production deployment.
• Improve observability, failure handling, incident response, and the reliability of business-critical services operating 24/7.
• Contribute to engineering standards through architecture reviews, Infrastructure as Code (Terraform), CI/CD, and mentoring other engineers.

Skills

Python

API design

Asynchronous processing

Event-driven architectures

Reliability in production

Cross-functional collaboration

Education

Significant experience (no degree required)

Tools

AWS

Terraform

MQTT

IEC-104

Job description

Capalo AI seeks a Senior Backend Engineer to own backend systems for Capalo Zeus VPP™, enabling grid-scale battery storage across European markets. You will design, implement, and operate production-grade services with end-to-end ownership.

You will build integrations using REST, MQTT, and IEC-104, and craft cloud-native infrastructure on AWS. You will impact forecasting, scheduling, and dispatch pipelines while improving reliability and observability.