[Hiring] Senior Full Stack Engineer REMOTE USA
Position: Senior Full Stack Engineer
Date Posted: 24 January 2026
Industry: Software / SaaS / Integration Platforms
Employment Type: Full Time
Experience: 6+ years building production systems at scale
Qualification: Estimated Bachelor’s degree holder or equivalent experience in Computer Science, Software Engineering, or related field
Salary: $279K/yr
Location: United States – REMOTE
Company: Underdog.io
Description:
Underdog.io connects top tech talent with leading companies in a fast, streamlined process. One of our hiring partners is seeking a Senior Full Stack Engineer to join their team remotely within the US.
This role focuses on our embedded integration platform (iPaaS), empowering B2B software companies—from startups to Fortune 100 enterprises—to build and manage integrations efficiently. The platform combines a low-code visual builder with powerful developer tools, enabling engineering teams to focus on core products while the integration complexity is handled seamlessly.
Key Responsibilities:
- Architect and build mission-critical platform features used by thousands of developers.
- Enhance integration tools including the visual workflow builder and TypeScript SDK/CLI.
- Optimize infrastructure to handle millions of API calls and data transformations.
- Improve developer experiences through dashboards, documentation, and APIs.
- Troubleshoot complex integration scenarios for enterprise customers.
- Lead architecture discussions and technical roadmapping.
- Mentor engineers and promote best practices in testing, code reviews, and documentation.
- Collaborate closely with product and design teams to translate user needs into technical solutions.
Technical Stack:
- Frontend: TypeScript, React
- Backend: Python, Django, TypeScript
- Cloud: AWS
- Databases: Postgres, Redis
Requirements:
- 6+ years of experience building production systems at scale, ideally in B2B SaaS.
- Expertise in TypeScript/React and Python/Django.
- Experience designing GraphQL/REST APIs.
- Familiarity with cloud infrastructure (AWS) and relational databases.
- Strong collaboration skills and ability to communicate complex technical concepts clearly.
- Commitment to code quality, maintainability, and scalable solutions.
Preferred / Bonus Skills:
- Experience building SDKs, CLIs, or developer tools.
- Background in integration platforms or iPaaS.
- Mentorship experience or contributions to open-source projects.
Why Join:
- Shape tools used by thousands of developers to power critical business workflows.
- Work on advanced problems in API orchestration and data pipelines.
- Competitive compensation with base salary and equity.
- Fully remote work within the US with biannual team gatherings.
- Premium benefits including medical, dental, vision, 401(k) with 4% match, unlimited PTO, life/disability insurance, and top-tier hardware.
Engineering Values:
- Build for Builders: Every feature focuses on developer experience.
- Ship to Learn: Fast iterations while maintaining enterprise-grade reliability.
- Customer-Centric Code: Solve real problems with practical solutions.
Disclaimer: The job details above are structured for clarity and based on publicly available content from recruiters/Company pages. All rights remain with the original source; names may be withheld for confidentiality. We are not involved in the hiring process.
