Location: Remote (United States – US time zones preferred)
Compensation: $200K – $240K + 0.20% – 0.40% equity
Employment Type: Full-time
Work Authorization: US work authorization required (no new visa sponsorship; limited H1B transfer exceptions possible)
Our client is an open source SaaS company building a feature flagging and A/B testing platform used by thousands of companies in production. Backed by leading venture investors, the company operates as a distributed US-based team and is entering a high-growth phase.
This is an early, high-impact engineering hire. The selected candidate will play a critical role in shaping both product direction and technical architecture while helping scale systems to enterprise-grade reliability and performance.
The team is fully remote, with a preference for candidates located within US time zones to allow for meaningful collaboration overlap.
The OpportunityOur client is seeking a Staff Full Stack Engineer to help design and scale core platform infrastructure and customer-facing analytics capabilities.
This role is ideal for an engineer who enjoys solving complex distributed systems challenges, building high-performance data products, and contributing meaningfully within a small, high-ownership team.
Key Technical ChallengesScaling Event IngestionThe platform ingests analytics events from customers (e.g., button clicks, transactions) and makes them queryable via SQL. The system must scale to millions of events per second while maintaining low latency (<30 seconds).
Warehouse-Native Product AnalyticsThe team is building a product analytics suite (similar to Mixpanel or Amplitude) that operates directly on a company’s existing SQL data warehouse. This includes significant front-end architecture, data engineering, and performance optimization work.
Real-Time Feature Flag AnalyticsWhen developers release code, they need immediate insight into system health and feature adoption. The platform aims to provide real-time visibility that extends beyond traditional APM tools and delivers a comprehensive analytics solution.
Robust Multi-Database SQL SupportThe platform supports 12+ SQL data sources, including Postgres, BigQuery, and PrestoDB, each with unique quirks and edge cases. Scaling this support requires building automated SQL test suites and dynamically provisioning complex cloud infrastructure.
Streaming Feature Delivery ServiceWhen a feature flag is toggled, updates must propagate globally within seconds. The system must maintain extremely high reliability (99.999% uptime) while handling billions of requests per day.
Required QualificationsExpert-level proficiency in TypeScript, React, and Node.js
Strong understanding of both SQL and NoSQL databases
Experience building large-scale web applications from scratch
Strong English communication skills
Experience in or strong interest in working within a startup or small, high-ownership team
Contributions to open-source projects
Experience using feature flags or A/B testing in production environments
Experience building data-intensive analytics platforms
Experience designing high-scale distributed systems
Fully remote work within US time zones
Comprehensive health, vision, and dental coverage (100% employee premium covered; 95% for dependents)
Generous home office or coworking stipend
Regular company off-sites
The company is an equal opportunity employer committed to fostering an inclusive and supportive work environment.
Interview ProcessThe interview process typically includes four virtual stages:
Introductory call with a founder
Technical screen (live coding and screen sharing)
System design interview
Behavioral and culture interview
The focus throughout the process is on real-world problem solving and technical thinking. There are no riddles or algorithm-style trick questions. The goal is to ensure strong mutual fit.
Why This Role Stands OutThis is an opportunity to operate at the Staff level within a high-growth, open-source SaaS company tackling complex data and distributed systems challenges.
The selected candidate will have meaningful ownership over architectural decisions, influence product direction, and help scale systems used by thousands of engineering teams globally.
For engineers who want startup ownership with enterprise-scale technical depth, this role offers both.
Skills Required
- Expert-level proficiency in TypeScript, React, and Node.js
- Strong understanding of SQL and NoSQL databases
- Experience building large-scale web applications from scratch
- Strong English communication skills
- Experience in or strong interest in working within a startup or small, high-ownership team
- Contributions to open-source projects
- Experience using feature flags or A/B testing in production environments
- Experience building data-intensive analytics platforms
- Experience designing high-scale distributed systems
SourceDirect Talent Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about SourceDirect Talent and has not been reviewed or approved by SourceDirect Talent.
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Affordable Benefits — Some postings describe employer-covered health premiums for employees and substantial support for dependents, signaling low out-of-pocket costs where eligible. Offerings may vary by role or employer-of-record, but the described coverage indicates strong affordability in certain cases.
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Retirement Support — Listed packages for select roles include a 401(k) with company matching, with one description characterizing the plan as among the strongest of its kind. These elements point to meaningful long-term savings support when applicable.
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Flexible Benefits — Descriptions highlight remote work options, flexible schedules, and home-office or coworking stipends, alongside learning support and occasional company off-sites. Such features suggest benefits that adapt to different working arrangements.
SourceDirect Talent Insights
What We Do
SourceDirect Talent is a talent advisory and recruiting firm serving seed and early-stage startups. It provides AI-powered recruiting solutions to help customers build go-to-market and engineering teams, alongside global people consulting. Its services cover end-to-end recruitment, immigration, HR, and advisory support, using AI talent agents, sourcing frameworks, and data-driven processes to help growing companies scale hiring and improve recruitment capacity.
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