Senior Software Engineer - Cloud Services

Job summary

Join Sim*** as a Senior Software Engineer - Cloud Services and help build and modernize the backend systems behind our connected-device and sensor-analytics platforms. Our work lives where hardware meets software in demanding, real-world settings including connected safety and sports-performance products where device data has to be captured reliably and turned into trustworthy insight.

Qualifications

• 6+ years of professional backend or cloud software engineering experience, including time in a senior or technical-lead capacity
• Bachelor's degree in Computer Science, Software Engineering, or a related technical field — or equivalent professional experience
• Strong proficiency in Node.js/TypeScript and Python for building production backend services
• Hands-on experience with core AWS services: Lambda, API Gateway, RDS, S3, and SQS/SNS
• Experience designing and operating serverless or service-oriented architectures in production
• Solid understanding of RESTful API design principles, versioning, and contract-first development
• Strong relational database

Responsibilities

• You will own significant parts of a cloud platform that ingests real-time device data, exposes it through well-designed APIs, and supports the analytics products our customers depend on.
• Lead design and evolution of the backend services and REST APIs that ingest, route, and serve device sensor data, balancing day-to-day delivery with long-term platform health
• Build and operate serverless services on AWS: primarily Lambda, API Gateway, and managed databases for scalable, cost-efficient cloud workloads
• Help modernize the platform toward event-driven patterns, introducing asynchronous messaging and streaming (e.g., SQS/SNS, Kinesis, or Kafka) where they improve reliability and scale
• Design and optimize relational databases (PostgreSQL on RDS) for high-throughput sensor data storage and demanding query workloads, applying solid schema design, indexing, and performance tuning
• Define and maintain clear API contracts between internal services, device clients, and external platform consumers
• Implement authentication, authorization, and security best practices across APIs and cloud services (OAuth 2.0, API Gateway, IAM)
• Instrument services with structured logging, metrics, and distributed tracing to support observability and proactive incident response
• Drive engineering maturity: CI/CD, automated testing, and code-quality standards.
• Lead design reviews as part of the team's formal review process
• Write clean, modular, well-tested code (unit, integration, and contract tests) and set the standard for quality across the codebase
• Collaborate with firmware, algorithm, and data teams to align on device communication protocols, data contracts, and platform SLAs, working within an Agile/SAFe delivery model

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