Backend engineer - Platform & IoT Integration

life Power; Antwerpen; On-site; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Hybrid work

Flexible hours

Career growth opportunities

Job summary

life Power is seeking a senior Backend Engineer to own core backend and IoT integration across our platform in a fast-growing energy company. You will work across Node.js/TypeScript, AWS, and timeseries data stacks to deliver scalable services and secure APIs.

You will collaborate with cross-functional teams, design with domain-driven patterns, and help push architecture decisions in a hybrid work environment in Belgium. Experience with analytics and device integration is valued.

Qualifications

• Proven experience building backend services (Node.js/TypeScript) in production.
• Hands-on experience with AWS for deploying cloud-native services.
• Experience with timeseries data pipelines (QuestDB/InfluxDB/Timestream).
• Knowledge of IoT integration and data scraping.
• Strong understanding of microservices, API-driven and domain-driven design (DDD).
• Experience with monitoring tools like CloudWatch and Sentry.
• Security-by-design APIs and IAM least privilege concepts.
• Familiarity with GDPR, NIS2, CRA compliance.

Responsibilities

• Own and evolve core backend and billing services end-to-end.
• Design, build and maintain backend services and AWS deployment pipelines.
• Manage timeseries data stack for analytics.
• Diagnose and resolve production issues across cloud and device code.
• Share architectural knowledge and assist teammates.
• Apply domain-driven design and microservice patterns.

Skills

Node.js/TypeScript

AWS

Timeseries data

IoT integration

DDD & Microservices

Observability

Security-by-design

GDPR/NIS2 compliance

Tools

AWS CDK

Kafka

Kinesis

MQTT

Job description

Wat:

Frequentie: Dagelijks Wekelijks

• life Power

We are looking for:

We are looking for an experienced senior level Backend Engineer - Platform & IoT Integration, who will take ownership of core backend and integration systems across our platform. You combine deep technical skill with a generalist mindset: comfortable moving between application code, cloud infrastructure and device-level integration, and trusted by the team as the person to call when something breaks or a solid architectural decision is needed.

Key responsibilities:

Own and evolve core backend and billing services end-to-end.

Design, build and maintain backend services and their AWS deployment pipelines.

Manage and evolve our timeseries data stack (e.g. QuestDB) that underpins device and energy analytics.

diagnose and resolve production issues across cloud and device code.

Support teammates who are blocked on code or infrastructure, and share architectural knowledge across the team.

Apply solid software design practices (e.g. domain-driven design, microservice patterns) and contribute to version releases across INT/ACC/PROD environments.

Technical skills

Proven experience building backend services (Node.js/TypeScript or comparable) in production.

Hands-on experience with AWS (e.g. Lambda, CDK) for deploying and operating cloud-native services.

Experience with timeseries or high-volume data pipelines (e.g. QuestDB, Timestream, InfluxDB or similar).

Working knowledge of device/IoT integration and data scraping, or a strong willingness to learn it.

Solid understanding of microservice, API-driven and domain-driven design (DDD).

Comfortable using observability tooling (e.g. CloudWatch, Sentry) to diagnose issues in production.

Comfortable using AI tools to support and accelerate technical work.

Solid grasp of security requirements for cloud and connected devices, and how to actually implement them (secure-by-design APIs, secrets and key management, least-privilege IAM)

Awareness of the compliance landscape our platform operates in (GDPR, NIS2, CRA) and able to translate current and upcoming obligations into concrete architectural and release decisions.

Profiel

Strong communicator who can explain technical trade-offs clearly to engineers and non-technical stakeholders alike.

A generalist mindset, comfortable moving between application code, infrastructure and device-level integration rather than staying in one narrow lane.

High degree of ownership and reliability; you follow through without needing to be chased.

Comfortable working independently in a fast-moving scale-up environment, and proactive about proposing improvements.

Open to doing thorough code reviews and sharing knowledge, not just shipping your own work.

Able to link the dots across systems and communicate clearly when diagnosing what broke and why.

Willing to support teammates who are blocked, even outside your own area of ownership.

Nice to have

Experience in the energy sector (IoT platforms, smart metering, renewables, billing/tariff engines).

Familiarity with monitoring and error-tracking tools (e.g. Sentry) beyond native cloud logging.

Familiarity with real-time/distributed database migrations.

A track record of introducing unit-test coverage into existing codebases.

Exposure to serverless architecture patterns and infrastructure as code (e.g. AWS CDK).

Experience with event-driven architectures (Kafka, Kinesis, MQTT, etc.).

Experience applying domain-driven design (DDD) principles in production services.

Comfortable contributing to release and deployment coordination across multiple environments (INT/ACC/PROD).

Experience coordinating hardware/software integration projects (embedded cloud systems).

Aanbod

What we offer:

Hybrid working and flexible working hours within an explorative, and growing company.

A friendly and dynamic team, united by a shared mission: delivering the best energy management solutions.

A creative environment where your commercial insights and contributions are highly valued, with room to shape strategies and make an impact.

The opportunity to quickly take on significant responsibility in a scaling organization.

A compensation package aligned with your experience, skills, and added value to the company.