Senior Software Engineer jobs in United States
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Passive · 6 hours ago

Senior Software Engineer

Passive is a company focused on making career exploration frictionless. As a Senior Software Engineer, you will play a critical role in building and scaling the core platform, collaborating closely with the CTO and product team to deliver impactful features and systems.

SaaS
Hiring Manager
Michael Wenning
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Responsibilities

Build and scale user-facing features using React (web) and modern frontend tooling
Develop and maintain backend services in Ruby on Rails, powering matching, applications, subscriptions, and integrations
Design clean, scalable APIs that support both B2C and B2B workflows
Contribute to mobile-first, high-performance experiences optimized for discovery and speed
Collaborate on AI-driven features such as: Role-to-candidate matching, Resume parsing and AI resume tailoring, Intelligent ranking, scoring, and personalization, Integrate with LLMs and ML services (OpenAI, vector databases, embeddings, etc.), Help productionize AI features with reliability, observability, and performance in mind, Partner with ML engineers and data pipelines to turn models into real product value
Build and maintain ATS integrations (SmartRecruiters, BambooHR, Greenhouse, Deel, Lever, etc.)
Design systems that scale across: High user growth, Marketplace-driven B2B demand, Increasing data and model complexity, Improve system reliability, performance, and security as we scale
Write clean, maintainable, well-tested code
Participate in architectural discussions and technical decision-making
Help establish best practices around code reviews, testing, and deployment
Mentor other engineers as the team grows

Qualification

ReactRuby on RailsAPI designAI/ML experienceCloud-native infrastructureData modelingSystem reliabilityProduct mindsetMentoring

Required

5+ years of professional software engineering experience
Strong experience building production systems with React and Ruby on Rails (or similar frameworks)
Ability to design scalable backend services and APIs
Solid understanding of data modeling, performance, and system reliability
Product mindset — you care about •why• you're building, not just •what•

Preferred

Experience working on AI/ML-powered products
Hands-on experience with LLMs, prompt engineering, embeddings, or ML infrastructure
Experience integrating third-party APIs or marketplace platforms
Startup or early-stage company experience (Seed–Series A)
Experience building consumer-facing products with high UX standards

Benefits

Competitive salary + meaningful equity.
Remote-first, async-friendly culture.

Company

Passive

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Job Searching Mobile App

Funding

Current Stage
Early Stage

Leadership Team

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Viki Zabala
Advisor | CGO
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Company data provided by crunchbase