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Senior Software Engineer - Backend
Trustonic
Winnersh, GBR
Full-time
Senior
Hybrid
Discovered 2 weeks ago
Python 3AWS LambdaAWS Lambda PowertoolsFastAPIFlaskGraphQL
Free
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Python 3AWS LambdaAWS Lambda Powertools
Key Skills for This Role
Python 3AWS LambdaAWS Lambda PowertoolsFastAPIFlaskGraphQL
Full Job Posting
Skills
- Python 3.10+ - strong proficiency including type hints, dataclasses, and async patterns.
- AWS Lambda Powertools (Logger, Tracer, Metrics) for observability.
- FastAPI or Flask for containerised microservices.
- Hands-on AWS expertise: Lambda, SQS, SNS, Step Functions, AppSync (GraphQL), API Gateway, CloudWatch, X-Ray, IAM, S3, and VPC fundamentals.
- PostgreSQL RDS - schema design, Alembic migrations, query optimisation.
- Redis - caching, pub/sub, distributed locks and idempotency patterns.
- Serverless Framework v3, Docker (container-based Lambdas), Terraform, Jenkins CI/CD.
- Apache Airflow DAG authoring and AWS Glue with PySpark for batch ETL.
- pytest and moto (offline AWS service mocking), Black formatter, ruff linter.
- Datadog APM tracing and structured JSON logging with Lambda Powertools.
- Strong debugging skills across async event flows, API behaviour, and distributed systems.
- Good working knowledge of Linux, Git workflows, and infrastructure as code.
Experience and Knowledge
A degree in computer science, software engineering, or equivalent experience
Proven commercial experience building Python-based AWS Lambda services in production.
Strong experience with PostgreSQL (schema design, Alembic migrations) and DynamoDB (access patterns, Streams).
Experience with event-driven architectures: SQS, SNS, Step Functions, DLQ and retry patterns.
Hands-on AWS infrastructure experience: Serverless Framework v3, Terraform, ECR, IAM.
Experience deploying Docker container-based Lambda functions.
Data engineering background with Airflow DAGs and PySpark/Glue ETL pipelines is an advantage.
Multi-tenant SaaS platform experience at scale is desirable.
Familiarity with telecom, OEM device management, or IoT platforms is a plus.
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