Backend Software Developer (Energy, Time Series & Data Flows)

8 months ago

Antwerp, BelgiumMid Level

Responsibilities

Design, implement, and operate scalable production backend services in Python, including APIs and internal services.
Build and evolve end-to-end data flows covering ingestion, validation, AI analytics, and API or product exposure.
Ensure data correctness and traceability through versioning, lineage, retries, idempotency, and backfills.
Improve throughput, latency, resilience, and handling of spikes and partial failures in critical flows.
Create observability dashboards, failure-handling mechanisms, and replay or backfill utilities.
Build and maintain connectors for energy and water time-series data and related metadata.
Handle missing intervals, time zones and daylight-saving changes, duplicates, late-arriving data, and inconsistent schemas.
Work with customers and partners to troubleshoot and stabilize integrations.
Collaborate with data and ML teammates to support model deployment and feature delivery.
Translate product requirements into robust backend implementations, workflows, and pipelines.

Solid production backend development experience in Python, including FastAPI, SQLAlchemy, or similar technologies.
Strong software engineering fundamentals in architecture, testing, performance, code reviews, code ownership, and reliability.
Experience designing and operating production data flows or event-driven workflows.
Hands-on experience with time-series data processing and validation is advantageous.
Experience or strong interest in energy efficiency, buildings, energy monitoring, utilities, or IoT is advantageous.
Experience with streaming or message-based systems, queues, events, or batch pipelines with backfills is advantageous.
Cloud experience with AWS or GCP, containers, and infrastructure-as-code is advantageous.
Experience improving operational maturity through SLOs, alerting, runbooks, and incident reviews is advantageous.

Competitive gross base salary depending on experience and a performance bonus of up to €25K per year.
Stock options, 13th-month salary, and double vacation pay.
Company car worth €35–50K or a mobility budget plus extra salary.
€8-per-day meal vouchers, €250-per-year eco vouchers, and a private-use EV charging card.
Free hospital insurance for the employee plus family discounts.
Laptop and smartphone, including €30 per month for phone and internet.
Hybrid work from the Brussels or Antwerp offices with some work-from-home days; fully remote work is not currently available.
Team events, activities, and milestone celebrations.

11-50 employees