Über diese Senior Backend Software Engineer — IoT Platform Stelle bei Espace
We are looking for a Senior Backend Software Engineer to help build and maintain the backend platform powering our connected-device products. You will work across cloud services, APIs, data pipelines, fleet management, and real-time device communications.
This is a hands-on role for an engineer who enjoys building production systems, solving practical problems, and working closely with embedded, hardware, frontend, and product teams
What you will do:
Backend Development
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Build, maintain, and improve Python/FastAPI backend services, REST APIs, and WebSocket endpoints.
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Develop features for device provisioning, fleet management, telemetry, events, device status, firmware management, and OTA updates.
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Design and maintain PostgreSQL schemas, migrations, indexes, queries, and data-retention strategies.
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Build and improve data-ingestion services using AWS IoT Core, MQTT, Lambda, RDS, Redis, and S3.
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Work with infrastructure-as-code and deployment tooling to maintain cloud infrastructure.
Quality and Reliability
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Write unit, integration, and end-to-end tests alongside feature development.
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Investigate and resolve production issues across APIs, databases, cloud infrastructure, and device integrations.
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Improve the reliability of telemetry ingestion through appropriate retries, idempotency, monitoring, and error handling.
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Participate in code reviews and contribute to clear, maintainable engineering practices.
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Help improve CI/CD, logging, metrics, and operational documentation.
Collaboration
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Work closely with embedded, hardware, frontend, and product teams to deliver end-to-end features.
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Participate in technical design discussions and communicate implementation tradeoffs clearly.
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Share knowledge and help establish sensible backend patterns as the team and platform grow.
What we are looking for:
Required
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5+ years of backend software development experience in production systems.
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Strong Python experience and hands-on experience with FastAPI, Django, Flask, or comparable backend frameworks.
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Strong knowledge of PostgreSQL, SQL, schema design, migrations, query optimization, and data lifecycle management.
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Experience with AWS services—or comparable cloud platforms—with hands-on AWS experience preferred, especially EC2, Lambda, S3, Cognito, and infrastructure-as-code.
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Experience with MQTT, WebSockets, message-driven architecture, or real-time data delivery.
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Experience designing and building REST APIs.
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Strong automated-testing skills, including unit, integration, and end-to-end testing.
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Experience with Git workflows, CI/CD, code review, and production deployment practices.
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Clear communicator who can work effectively across engineering disciplines.
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Experience with Linux.
Nice to Have
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Experience building cloud-connected IoT, device-management, telemetry, or other event-driven systems.
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Experience with AWS IoT Core, IoT Jobs, Device Shadows, or IoT fleet provisioning.
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Experience building firmware OTA, device telemetry, or fleet-management platforms.
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Experience with Redis, RDS Proxy, queues, stream processing, or event-driven architectures.
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Experience with AWS CDK, Terraform, or other infrastructure-as-code tools.
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Familiarity with embedded systems, wireless communications, or sensor-rich hardware.
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Experience with security-focused systems, audit logging, or operational compliance.
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Experience in aerospace, satellite, industrial IoT, or other mission-critical environments.
Additional Requirements
How We Work
• On-site, collaborative environment. We build physical hardware - presence matters.
• Small teams with high autonomy. You own your area end-to-end.
• Fast iteration cycles. We prototype, test, and revise quickly.
• Direct feedback culture. We expect candor and respect in equal measure.