Jahnel Group
Principal Software Engineer
New York City, United States · Principal · Full-time
Sponsorship not specifiedDetected 49 days ago
TypeScriptPythonGoReactNext.jsNode.jsDistributed SystemsCode ReviewPostgreSQLAWSTerraformLLMsAgentic AIForecastingSupply ChainCadence
About the role
- This is a full time position with one of our closest clients.
- This is a deeply technical, high-ownership individual contributor role.
- You should be comfortable operating across backend systems, frontend interfaces, infrastructure, and emerging AI workflows, and you should naturally think in terms of systems, tradeoffs, and long-term maintainability.
Responsibilities
- Own technical architecture and system design across two core platforms.
- Deep experience building and operating production systems on AWS
- Advanced PostgreSQL experience (schema design, scaling, performance tuning, multi-tenant systems)
- Proven ownership of systems from architecture through production support / on-call
Nice to have
- Moves fluidly across languages and stacks
- Raises the engineering bar through code, not just direction
- Level up the team through code review, pairing, and clear written decisions.
- 10+ years of professional software engineering experience
- Strong expertise in TypeScript / Node.js, with Next.js + React
- Strong background in event-driven / distributed systems (queues, async workflows, background processing)
- Hands-on experience with infrastructure-as-code (Terraform, CDK, or OpenTofu)
Skills
- AWS: Lambda, Step Functions, ECS Fargate, SQS/EventBridge, RDS, S3, IAM
- Strong backend engineering in TypeScript/Node.js (primary)
- Experience working across multiple languages (Go and/or Python preferred)
- Next.js / React frontend development experience
- Production-grade system design (scalability, reliability, observability)
- Experience debugging and optimizing distributed systems
- Nice-to-Haves
- 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)
Compensation
- Package (Salary Transparency for US-Based Employees)
- Salary is negotiable and the range can be increased based on qualifications, certifications and experience
Benefits
- Make and document the big calls - what to consolidate, what to harden, what to leave alone.
Company info
- We're looking for a h ands-on Principal Software Engineer who thrives in complex, fast-moving environments and wants to own the technical direction of mission-critical systems.
- You'll be the most senior engineer on the platform, responsible for setting architecture, guiding technical decisions, and ensuring both systems stay stable, scalable, and shipping fast.
- Comfortable actively using AI coding tools (Cursor, Claude Code, etc.) as part of daily development workflow
- Jahnel Group's mission is to provide the absolute best environment for software creators to pursue their passion by connecting them with great clients doing meaningful work.
- Who we are looking for
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This listing is sourced directly from Jahnel Group's careers page and normalized into a canonical job model.