Key skills
TypeScriptPythonGoAILLMOpenAIClaudeAnthropicAgenticReactNext.jsNode.jsAWSTerraformECSFargateLambdaS3RDSIAMSQSBedrockPostgreSQL
About this role
Jahnel Group is dedicated to providing an optimal environment for software creators. They are seeking a hands-on Principal Software Engineer to lead the technical direction of mission-critical systems, ensuring stability and scalability while guiding architectural decisions.
Responsibilities:
- Own technical architecture and system design across two core platforms
- Keep production stable and the release cadence fast as the platform grows
- Make and document the big calls — what to consolidate, what to harden, what to leave alone
- Stand up the things a maturing platform needs: observability, runbooks, and engineering guardrails
- Level up the team through code review, pairing, and clear written decisions
Requirements:
- 10+ years of professional software engineering experience
- Deep experience building and operating production systems on AWS
- Strong expertise in TypeScript / Node.js, with Next.js + React
- Advanced PostgreSQL experience (schema design, scaling, performance tuning, multi-tenant systems)
- Strong background in event-driven / distributed systems (queues, async workflows, background processing)
- Hands-on experience with infrastructure-as-code (Terraform, CDK, or OpenTofu)
- Proven ownership of systems from architecture through production support / on-call
- Comfortable actively using AI coding tools (Cursor, Claude Code, etc.) as part of daily development workflow
- AWS: Lambda, Step Functions, ECS Fargate, SQS/EventBridge, RDS, S3, IAM
- Strong backend engineering in TypeScript/Node.js (primary)
- Next.js / React frontend development experience
- Production-grade system design (scalability, reliability, observability)
- Experience debugging and optimizing distributed systems
- Experience with Go and/or Python in production environments
- Exposure to LLM / agentic systems (Bedrock, OpenAI, Anthropic, prompt workflows, evals)
- Background in retail, inventory, supply chain, or forecasting systems
- Experience building data-heavy or operational planning tools
- Prior work in high-scale infrastructure environments (AWS-heavy orgs, large tech companies)