Firstup
SaaS
Sr.SoftwareEngineer,Fullstack
Neural analysis suggests this role is
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“Sr. Software Engineer, Fullstack at Firstup. Skills: Full stack development, Scalable SaaS application development, API development, Third-party integrations, Shared platform services, System architecture, Performance and reliability, Shift-left testing, AI integration. 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”
What You'll Achieve.
Improve the employee experience at every moment that matters; Reach and connect more than 17 million employees daily; Deliver engagement insights to help companies support, promote and retain their talent; Accelerate delivery and improve code quality using AI tools; Ensure code is reliable, readable, efficient, and testable; Drive system availability and performance; Embed comprehensive testing early and continuously in the development lifecycle
Industry & Context.
Investigate, analyze, and resolve reliability issues; Recognize opportunities and advocate for better performance and efficiency; Make informed technical trade-offs in the face of ambiguity; Collaborate on solving complex, high-impact problems
What They're Looking For.
Must Have
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, Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases, networking, security, serverless, event streaming, or similar, 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, communication skills and openness to collaborative idea-sharing across teams
Nice to Have
Familiarity with Ruby on Rails, TypeScript, Node. js, or React. js is a plus, Core Stack Experience: Familiarity with Ruby (including Ruby on Rails), TypeScript, Node. js, or React. js is a plus
What You'll Do.
Build and own scalable SaaS applications end-to-end — frontend
Write production-grade code that is reliable
Design future-ready architectures and proactively close gaps
Drive system availability and performance
and resolve reliability issues across the stack
Leverage and advocate for AI-assisted tools to accelerate development
Mentor engineers to elevate overall engineering quality
How You'll Work.
Team & Collaboration
Raise the bar through thoughtful code reviews; Partner with Product and Design to translate requirements into intuitive UI; Make informed technical trade-offs in the face of ambiguity; Champion engineering best practices across teams; Collaborate on solving complex, high-impact problems; Collaborative idea-sharing across teams
Communication Scope
Communication skills and openness to collaborative idea-sharing across teams
Full Job Description
## Description Who We Are At Firstup, our mission is to improve the employee experience at every moment that matters, large and small. As the communication pipeline for the world's workforce, we now serve 40 of the Fortune 100 companies, reaching and connecting more than 17 million employees daily. Our employees are experts in the employee experience, workforce communications and technology. Joining Firstup means joining a movement to make work better for every worker. As the world’s first intelligent communication platform, Firstup meaningfully engages employees at every moment from hire to retire, and delivers engagement insights to help companies support, promote and retain their talent. Our movement has taken root and is evident in our world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform services. You will deliver innovative, scalable solutions while constantly improving our approach to architecture, scale, availability, and fault-tolerance. You are an active user of Generative AI tools and coding agents, applying them daily to accelerate delivery and improve code quality. ## Responsibilities 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. System Architecture: Design future-ready architectures and proactively close gaps before they become problems. 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 process
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