Senior Cloud Backend Engineer (IoT)

TL;DR

Senior Cloud Backend Engineer (IoT): Developing and maintaining cloud infrastructure and backend services for connected devices with an accent on AWS serverless architecture, time-series data management, and secure firmware delivery. Focus on building scalable ETL pipelines, implementing rigorous security standards like field-level encryption, and optimizing cloud costs for high-load IoT systems.

Location: Remote (Global)

Compensation: 120–180 PLN/hour (B2B)

Company

A specialized design and engineering partner with 15+ years of experience building applications for IoT and connected devices such as wearables and audio systems.

What you will do

• Build and maintain robust cloud infrastructure on AWS.
• Develop backend code and API interfaces supporting mobile application business logic.
• Design schemas and retention policies for time-series and relational data.
• Implement GDPR/CCPA compliant solutions and data-minimization lifecycles.
• Conduct load-testing, right-sizing, and cost-allocation monitoring.
• Manage firmware delivery pipelines and automated security checks.

Requirements

• Extensive experience with AWS services including Lambda, API Gateway, ECS Fargate, and Timestream.
• Proficiency in TypeScript and Node.js (NestJS).
• Strong background in Infrastructure as Code using Terraform and GitLab CI/CD.
• Experience with data security practices, including field-level encryption (KMS) and IAM.
• Ability to participate in meetings within the CET time zone (up to 20:00 CET).
• Willingness for occasional travel to the US for major project requirements.

Culture & Benefits

• 100% remote work environment with flexible working hours.
• Core hours set between 10:00 and 18:00 CET.
• Opportunity for transition to a long-term internal team role with full benefits (paid leave, sick pay, training budget).
• Active knowledge-sharing culture.

Hiring process

• 45-minute screening call with HR.
• 60–90 minute technical interview including a live coding session.
• Final feedback provided within one week.