Staff Software Engineer - Experimentation

Headway
San Francisco, Seattle, New York
Workplace: RemoteFull timeUSD 265,000 - 331,000 annuallyFunction: Software EngineeringSkills: ["Systems thinking","Data intuition","Mentorship","Debugging","Technical leadership"]

Own Headway’s experimentation platform end-to-end, including experiment assignment, exposure, and trustworthy data pipelines used by teams across the company. Build and evolve the long-term experimentation and feature-flagging architecture (including evaluating LaunchDarkly and Statsig), and incorporate AI safely into the workflow. Partner with Data Science and product/event teams to improve measurement quality, debug hard experimentation bugs, and provide technical leadership through platform design and program operations.

Loading

Loading job details...

Preparing the role view and application actions.

FursaFursa
Headway
Headway
1 day ago

Staff Software Engineer - Experimentation

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 8 hours agoStatus: Live

Job Summary

Own Headway’s experimentation platform end-to-end, including experiment assignment, exposure, and trustworthy data pipelines used by teams across the company. Build and evolve the long-term experimentation and feature-flagging architecture (including evaluating LaunchDarkly and Statsig), and incorporate AI safely into the workflow. Partner with Data Science and product/event teams to improve measurement quality, debug hard experimentation bugs, and provide technical leadership through platform design and program operations.
Location: San Francisco, Seattle, New York
Workplace: Remote
Employment Type: Full time
Job Function: Software Engineering
Seniority: Mid level

Key Responsibilities

  • •Design and build experimentation primitives, including experiment assignment/exposure and identity resolution across sessions and devices.
  • •Own experimentation data pipelines and platform capabilities that enable trustworthy results across assignment, tracking, and metric definitions.
  • •Evaluate and evolve the long-term experimentation and feature-flagging stack (including consolidation choices for LaunchDarkly and Statsig).
  • •Validate experiment setup with AI leverage and build diagnostics to catch broken experiments early.
  • •Develop experimentation as a program across the company by setting defaults, templates, review processes, documentation, and education.

Pay and Benefits

Salary: USD 265,000 - 331,000 annually
Equity and Bonus:Equity
Perks:EquityHealth InsuranceDentalVision401kHsa/fsaHome StipendParental LeavePaid Leave

Key Requirements

  • •Have owned an experimentation or feature flagging stack end to end, with accountability for whether results were correct.
  • •Have built non-standard components like persistent assignment, exposure that matches what users saw, and identity resolution across sessions and devices.
  • •Be fluent in statistics to partner with data scientists on measurement validity and explainable results.
  • •Have debugged difficult measurement bugs (uneven traffic splits, users in both arms, exposure mismatches, identity breaks between anonymous and logged-in).
  • •Have led both platform and program improvements, including templates, review, defaults, documentation, and education.
Experience:ExperimentationFeature flaggingMarket-based testingGrowthSearchHealthcare
Skills:Systems thinkingData intuitionMentorshipDebuggingTechnical leadership
Tech Stack:Python 3TypeScriptFastAPISQLAlchemyReactRemixLaunchDarklyStatsigDbtSnowflakePostgresRedisAWSFargateECSS3CloudflareSparkKafkaDatadog

Company Brief

Headway
Headway is a technology-driven mental health platform that connects patients with licensed therapists and streamlines insurance-based mental healthcare access for providers and practices across the United States.
Industry: Mental Health
Company Size: Large (251 to 1,000 employees)
Growth: Scaleup
Headquarters: New York, United States
Founded: 2017
Website