API Engineer

Lynker; Boulder (CO); On-site; USD 110,000 - 170,000; Full time

Benefits offered by this job

Healthcare (employee)

401(k) plan

Employee ESOP

PTO & paid holidays

Tuition assistance

Job summary

Lynker Corporation is seeking an experienced API Developer to design and build APIs that ingest structured data, generate versioned outputs in PDF and JSON, and maintain stable interfaces as systems evolve.

The role emphasizes REST/JSON API design, data schemas, and deployment in secure environments with CI/CD. Colorado Front Range in-person collaboration is expected.

Qualifications

• Master's in CS, software engineering, data science, or equivalent practical API experience.
• Experience designing and consuming REST/JSON APIs and working with structured data formats.
• Understanding of data schemas and versioning and stable data contracts.
• Comfort with Git, Linux, testing, and command-line workflows.

Responsibilities

• API development: design and build APIs ingesting data and serving results.
• Produce versioned, schema-conformant outputs in formats like PDF and JSON.
• Define and maintain output schemas and API versioning with standards like OpenAPI.
• Provide a lightweight CLI for scripted/batch use.
• Help package and deploy services with secure deployment practices.
• Write unit/integration tests and output-validation checks.
• Document APIs, schemas, and formats; collaborate with Science and Platform teams.

Skills

Modern programming languages

REST/JSON APIs

Data schemas & versioning

Git & Linux

Testing & validation

Education

Master's in CS/related field

Bachelor's + API experience

Equivalent practical experience

Tools

OpenAPI

JSON Schema

GeoJSON/GeoParquet familiarity

Docker/CI-CD tooling

Job description

Overview

Lynker Corporation is a leading provider of innovative solutions in weather and climate science. With a commitment to excellence and a passion for innovation, Lynker leverages cutting-edge technologies and scientific expertise to support the creation and delivery of improved operational weather forecasts.As part of our ongoing growth and expansion, we are seeking a dynamic and experienced API Developer to join our growing team.

Responsibilities

Duties of the API Developer will include the following:

• API development: design and build APIs that ingest structured data and serve results to downstream users and applications.
• Structured outputs: generate versioned, schema-conformant outputs in multiple formats, including PDF and JSON, that faithfully represent the underlying data.
• Schemas & versioning: define and maintain output schemas, data contracts, and schema and API versioning, using standards such as OpenAPI and JSON Schema, so consumers can rely on stable interfaces as the system evolves.
• CLI (secondary): provide a lightweight command-line interface over the same functionality for scripted and batch use.
• Security & deployment: help package and deploy services soundly, applying good practices for access control, dependency management, and compliance in secure or government-adjacent environments.
• Testing & validation: write unit and integration tests and output-validation checks to confirm results are correct, well-formed, and reproducible.
• Documentation & collaboration: document APIs, schemas, and output formats; coordinate with the Science and Platform teams that define the underlying data and logic to keep interfaces clear.

Qualifications

The API Developer selected should have the following:

• Master's in computer science, software engineering, data science, or a related field; or a Bachelor's plus 1-2 years building APIs, services, or data pipelines; or equivalent practical experience, including military or self-taught paths.
• Proficiency in at least one modern programming language; Python experience is a plus, as it is the likely production language for this work.
• Experience designing and consuming REST/JSON APIs and working with structured data formats.
• Understanding of data schemas and versioning, and why stable data contracts matter to downstream consumers.
• Comfort with Git, Linux, testing, and command-line workflows.

The Ideal API Developer will have the following:

• Experience generating documents or reports programmatically (e.g., PDF generation) and producing multiple output formats from a single source of truth.
• Familiarity with schema definition and validation tooling (e.g., JSON Schema) and format versioning practices.
• Exposure to environmental, geospatial, or scientific data, and formats such as GeoJSON or GeoParquet.
• Experience with containerization, Infrastructure-as-Code, and CI/CD for reliable, repeatable builds and deployments (e.g., Docker, Terraform or CloudFormation, GitHub Actions).
• Systems, infrastructure, or networking experience, and familiarity with secure deployment on AWS (e.g., access management, or a security credential such as CC or Security+).
• Experience with R, including Shiny, or other languages for data apps and rapid prototyping.
• Familiarity with Rust or an interest in contributing to Rust-based tooling.
• Colorado Front Range presence for periodic in-person collaboration.

About Lynker

Lynker is a growing, employee owned business, specializing in professional, scientific and technical services. Our continually expanding team combines scientific expertise with mature, results-driven processes and tools to achieve technically sound, cost effective solutions in hydrology/water sciences, geospatial analysis, information technology, resource management, conservation, and management and business process improvement.

We focus on putting the right people in the right place to be effective. And having the right people is critical for success. Our streamlined organization enables and empowers our talented professionals to tackle our customers' scientific and technical priorities – creatively and effectively.

Lynker offers a team-oriented work environment, and the opportunity to work in a culture of exceptionally skilled professionals who embrace sound science and creative solutions. Lynker's benefits include the following:

• Comprehensive healthcare for the employee at no monthly cost
• Healthcare benefit covers medical, prescription drug, dental, and vision
• Personal Time Off (PTO) Policy plus paid holidays
• Highly competitive compensation plan regularly calibrated against industry and location benchmarks
• 401(k) retirement plan with company-matching
• Employee Stock Ownership Plan (ESOP) – we're all company owners!
• Flexible spending accounts
• Employee assistance program (EAP)
• Short- and long-term disability insurance
• Life and accident insurance
• Tuition assistance/Training/Workforce improvement reimbursement per year
• Spot bonuses for exceptional performance
• Annual Employee Recognition Awards with bonuses
• Employee Referral Program
• Free centralized, self-directed Learning Management System to learn at your own pace
• Personalized career growth plans for every employee

Lynker is an E-Verify employer.

Lynker is an equal opportunity employer and makes all employment decisions based on merit, qualifications, and business needs. We do not discriminate on the basis of race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age, disability, genetic information, marital status, veteran status, or any other legally protected status under federal, state, or local laws.