Senior Full Stack Engineer

Location: Remote (US)

One of our hiring partners is looking to hire a remote Sr Full Stack Engineer to join their growing team.

Underdog.io is a modern recruiting platform. This role is being filled through Underdog.io — a invite-only network of vetted startups and high-growth companies. You won't go through a staffing agency or get passed around. Your resume goes directly to our hiring team and is reviewed by a real human. Your profile is completely confidential. If there's a good fit, you'll hear from us directly — no middleman, no black hole.

About Us

We’re revolutionizing how B2B software companies build and manage integrations. As a leading embedded integration platform (iPaaS), we empower teams from startups to Fortune 100 enterprises to deliver seamless connectivity solutions. Recognized for top-tier customer satisfaction, our engineer-first platform combines a low-code visual builder with robust developer tools, enabling teams to focus on their core product while we handle the complexity of integrations.

The Role

As a Senior Full Stack Engineer, you’ll architect mission-critical features used by thousands of developers to build, deploy, and scale integrations. You’ll own projects end-to-end, from designing APIs to enhancing our low-code interface, directly impacting how businesses connect their software ecosystems.

What You’ll Build

Integration Tools: Enhance our visual workflow builder and TypeScript SDK/CLI for developers
Scalable Infrastructure: Optimize systems handling millions of API calls and data transformations
Developer Experiences: Improve dashboards, documentation, and APIs used by engineering teams globally
Customer Solutions: Troubleshoot complex integration scenarios with enterprise users

Tech Stack

Frontend: TypeScript, React
Backend: Python, Django, TypeScript
Cloud: AWS
Databases: Postgres, Redis

Key Responsibilities

Lead architecture discussions and technical roadmapping for platform features
Ship production-grade code across the stack (frontend, backend, infrastructure)
Collaborate with product and design to translate user needs into technical solutions
Mentor engineers and champion best practices (testing, code reviews, documentation)
Work directly with customers to solve integration challenges

Who We’re Looking For

6+ years building production systems at scale, preferably in B2B SaaS

Technical Mastery:

Expertise in TypeScript/React and Python/Django
Experience designing GraphQL/REST APIs
Familiarity with cloud infrastructure (AWS) and relational databases

Mindset:

Thrives in collaborative, fast-paced environments
Obsessed with code quality and maintainability
Communicates complex technical concepts with clarity

Bonus Points For

Experience building SDKs, CLIs, or developer tools
Background in integration platforms or iPaaS
Mentorship experience or open-source contributions

Why Join?

🚀 Impact: Shape tools used by thousands to power critical business workflows

💻 Tech Excellence: Work on cutting-edge problems in API orchestration and data pipelines

💰 Compensation: base salary + equity

🏡 Remote Flexibility: Work from anywhere in the US with biannual team gatherings

🏥 Benefits:

Premium medical/dental/vision (Cigna, Guardian, VSP)
401(k) with 4% company match
Unlimited PTO + life/disability insurance
Top-tier hardware and tools

Our Engineering Values

Build for Builders: Every feature is a developer experience
Ship to Learn: Iterate fast while maintaining enterprise-grade reliability
Customer-Centric Code: Solve real problems, not just write clever solutions

Apply Now if you:

Want to redefine how software integrates at scale
Love balancing technical depth with product intuition
Are ready to mentor and lead in a high-growth environment

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