Full Stack Software Engineer - API Platform Engineering

Description:
Hybrid 4 days onsite, 1 remote in Greenwood Village, CO

Our client seeks a Full Stack Software Engineer to build and operate a modern API platform. The team treats APIs as products with clear contracts, observability, documentation, and ownership. The role emphasizes TypeScript, Python, AWS, and DevOps practices with automation, infrastructure as code, CI/CD, and strong testing. AI-assisted development is part of daily work. The engineer will move from ambiguity to production solutions, take ownership across the lifecycle, and improve developer experience and platform reliability.

We can facilitate w2 and corp-to-corp consultants. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.

Rate: $65.00 to $75.00/hr. w2

JN -88

Responsibilities:

• Design, build, and operate APIs to OpenAPI standards with clear contracts and documentation.
• Develop backend services using TypeScript/Node.js and Python frameworks such as FastAPI or Django.
• Implement automation via infrastructure as code, CI/CD, testing, and deployment workflows.
• Own services from design through production support with measurable SLIs and reliability goals.
• Incorporate AI assistants for code generation, testing, documentation, and reviews.
• Implement observability with structured logging, metrics, dashboards, and alerts.
• Collaborate on system design, security, performance, and developer experience improvements.
• Support environment-based deployments and versioned, secure APIs with resiliency patterns.

Experience Requirements:

• TypeScript/Node.js for backend services, strong type system knowledge, async patterns, and API development.
• Python in production with FastAPI or Django and PostgreSQL optimization.
• AWS services including Lambda, Step Functions, S3, SNS/SQS, Secrets Manager, CloudWatch, and RDS/Aurora.
• Infrastructure as code with AWS CDK and/or Terraform.
• GitLab CI/CD, automated testing, security scanning, and multi-stage deployment workflows; monorepo a plus.
• API engineering with OpenAPI/Swagger, OAuth 2.0, versioning, rate limiting, resiliency, and idempotency.
• Testing discipline with unit/integration coverage and automated quality gates.
• Observability with tools such as Splunk or Datadog and production troubleshooting.
• Regular use of AI coding assistants and effective integration into workflows.
• Collaboration skills, thoughtful code reviews, and clean version control practices.
• Preferred: functional programming concepts (immutability, composition, typed errors) and frameworks such as Effect.js, fp-ts, or ZIO.
• Preferred: Kubernetes/EKS with Helm, blue/green and canary strategies.
• Preferred: SRE practices including SLIs/SLOs, error budgets, incident response, and toil reduction.
• Preferred: secure development, performance optimization, and distributed systems.

Recruitment Transparency Notice

Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screening and hiring process. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team ( , ) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group's use of these tools, including AI tools, as part of the application and hiring process.

Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.

W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
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About Eliassen Group:

Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients' capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.

Eliassen is committed to building a diverse and inclusive team from a variety of backgrounds, perspectives, and skills. We are an Equal Opportunity and Affirmative Action Employer and all employment decisions are based on merit, performance, and business needs. Eliassen does not discriminate on the basis of race, color, gender identity or expression, sexual preference or orientation, sex (including pregnancy, childbirth, and related medical conditions), marital status, creed, religion, physical or mental disability, genetic information, military or veteran status, age, ancestry, national origin, citizenship status, prohibited criminal record inquiries of applicants and employees, or any other category protected by federal, state, or local laws.

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