
Real job — pulled straight from Firstup’s careers page · Verified August 19, 2026 · No reposts.
Job description
Firstup is hiring a Software Engineer, Fullstack (Remote) — a full-time, remote role ($120k–$190k). Apply directly on Firstup's careers page below.
Sr. Software Engineer, Fullstack - Remote
Team: Product Engineering
Location: Remote - US
Commitment: Full-time
Workplace Type: remote
Salary:
Responsibilities
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Core Engineering & Ownership: Build and own scalable SaaS applications end-to-end — frontend, backend, and data layers. Write production-grade code that is reliable, readable, efficient, and testable. Raise the bar through thoughtful code reviews and comprehensive documentation.
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System Architecture: Design future-ready architectures and proactively close gaps before they become problems.
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Performance & Reliability: Drive system availability and performance — investigate, analyze, and resolve reliability issues across the stack. Recognize opportunities and advocate for better performance and efficiency of software, systems, and processes across teams.
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Shift Left Testing & Quality: You champion a rigorous 'shift-left' quality culture, embedding comprehensive testing—unit, integration, and contract—early and continuously in the development lifecycle, not as an afterthought.
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AI Integration: Leverage and advocate for AI-assisted tools (e.g., GitHub Copilot, Claude) to accelerate development while maintaining rigorous engineering judgment and accountability for code correctness.
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Leadership: Drive team-wide best practices, conduct quality code reviews, and mentor engineers to elevate overall engineering quality.
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Collaboration (Product & Design): Partner with Product and Design to translate requirements into intuitive UI, making informed technical trade-offs in the face of ambiguity.
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Collaboration (Engineering Standards): Champion engineering best practices across teams and collaborate on solving complex, high-impact problems.
Minimum Qualifications
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Bachelor's degree in Computer Science or related field, or equivalent experience.
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5+ years building reliable, performant applications and microservices in production environments. Proven full stack fluency - you're comfortable across frontend, backend, and the database layer.
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A polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus.
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Proven full-stack experience across frontend (React.js), backend, and database layers.
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Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases, networking, security, serverless, event streaming, or similar.
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A genuine drive to build beautiful, intuitive products with the customer always in focus. Innate curiosity — you love learning and have a desire to teach and lift others. Strong communication skills and openness to collaborative idea-sharing across teams.
Preferred Qualifications:
- Core Stack Experience: Familiarity with Ruby (including Ruby on Rails), TypeScript, Node.js, or React.js is a strong plus.
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Frequently asked questions
What is the salary for Software Engineer, Fullstack (Remote) at Firstup?
The estimated salary range for Software Engineer, Fullstack (Remote) at Firstup is $120,000 - $190,000 USD per year.
Is Software Engineer, Fullstack (Remote) at Firstup a remote job?
Yes, Software Engineer, Fullstack (Remote) at Firstup is a remote position. This role is open to remote candidates.
What skills are required for Software Engineer, Fullstack (Remote) at Firstup?
The required skills for Software Engineer, Fullstack (Remote) at Firstup include: Ruby on Rails, TypeScript, Node.js, React, Microservices, SQL.
What is the seniority level for Software Engineer, Fullstack (Remote) at Firstup?
Software Engineer, Fullstack (Remote) at Firstup is a Senior level position.
How do I apply for Software Engineer, Fullstack (Remote) at Firstup?
You can view the full description and apply for Software Engineer, Fullstack (Remote) at Firstup on EchoJobs: https://echojobs.io/job/firstup-sr-software-engineer-fullstack-remote-whklf.