Note: The job is a remote job and is open to candidates in USA. Simbex is a company focused on connected-device and sensor-analytics platforms. They are seeking a Senior Software Engineer - Cloud Services to build and modernize backend systems, manage cloud platforms, and ensure the reliability of device data handling.
Responsibilities
- 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
- Mentor engineers and help shape the technical direction, standards, and best practices of the platform
Skills
- 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 skills (PostgreSQL or similar) — schema design, indexing, query optimization, and performance tuning
- Demonstrated ability to lead technical design, mentor engineers, and drive decisions across cross-functional teams
- Familiarity with CI/CD practices and tooling (GitHub Actions, Jenkins, or similar)
- Experience working in an Agile environment (Scrum, Kanban, or SAFe)
- Experience with IoT connectivity protocols: MQTT, AMQP, or AWS IoT Core
- Experience with containerization and orchestration (Docker, ECS, or Kubernetes)
- Experience with infrastructure-as-code tooling: Terraform, AWS CDK, or CloudFormation
- Experience introducing event-driven or streaming architectures (Kafka, Kinesis, or similar) into an existing platform
- Familiarity with observability platforms: OpenTelemetry, Datadog, Grafana, or AWS CloudWatch
- Experience with API contract testing frameworks such as Pact or similar
- Background in connected devices, wearables, sensor-data platforms, or other high-reliability or regulated domains
Company Overview