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Software Engineer – Full Stack (Contract)

Windfall Bio is a biotech startup turning methane emissions into valuable products using biology and engineering. The team is seeking a senior Full Stack Software Engineer (contract) to build enterprise-grade, scalable web applications, APIs, and infrastructure that enable measurement, reporting, verification, and insights across the methane capture-to-value pipeline. The role blends frontend design-driven development, backend and infrastructure work on AWS, and data-driven UX including GenAI components.

Skills

  • Expert frontend skills with JavaScript, React, and Next.js.
  • Backend proficiency with Python and frameworks like FastAPI or Flask.
  • Hands-on experience with AWS services (S3, RDS, DynamoDB, ECS/Fargate, Lambda).
  • API design and microservices development experience.
  • Experience with Infrastructure as Code (Terraform) or willingness to learn.
  • Familiarity building enterprise-grade, production web applications.

Responsibilities

  • Contribute to the frontend framework and reusable component library using React/Next.js.
  • Implement data-driven UX and GenAI-enabled interfaces to surface insights and storytelling.
  • Design and build backend services and APIs (microservices) using Python (FastAPI/Flask).
  • Architect and implement scalable infrastructure on AWS (Lambda, ECS/Fargate, RDS, S3, DynamoDB).
  • Collaborate with cross-functional teams (software engineers, scientists, bioengineers) to deliver production-quality features.
  • Ensure application reliability, security, and scalability for enterprise customers and compliance workflows.

Education

  • Bachelor's degree in Computer Science, Engineering, or related field, or equivalent practical experience.
  • Continued learning or certifications in cloud technologies or relevant frameworks are a plus.

Benefits

  • Remote-friendly work (contract; flexible hours, 30–35 hrs/week).
  • Competitive hourly rate ($60–$100/hr).
  • Short-term 3-month contract with potential to extend.
  • Opportunity to work on mission-driven climate and environmental impact technology.
  • Collaborative, cross-disciplinary team environment.
To read the complete job description, please click on the ‘Apply’ button

Average salary estimate

$137800 / YEARLY (est.)
min
max
$93600K
$182000K

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FUNDING
SENIORITY LEVEL REQUIREMENT
TEAM SIZE
No info
HQ LOCATION
No info
SALARY RANGE
$93,600/yr - $182,000/yr
EMPLOYMENT TYPE
Contract, remote
DATE POSTED
August 14, 2025
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