Backend Engineer (Product Growth)

Higgsfield
Almaty, Kazakhstan
On-site

Who this role is best for

Aimed at mid-to-senior level backend engineers who excel in revenue-critical product development and thrive in dynamic startup environments.

Best fit for

  • Candidates with experience in payment systems and a track record of driving conversions through product design
    — “Build the revenue-critical parts of Higgsfield products: paywalls, pricing pages, checkout and subscription flows used by millions of people.”
  • Individuals who have worked in high-intensity startup environments and can adapt to shifting priorities
    — “Resilience and focus in a high-intensity startup environment, where priorities shift fast and the schedule isn’t always predictable.”
  • Professionals who have led or collaborated on A/B testing and product analytics initiatives
    — “Run A/B tests and PLG experiments quickly, and work closely with analysts to turn data into product decisions.”

Things to consider

  • The role requires relocation to Almaty, Kazakhstan for an on-site position
    — “On-site role in our Almaty office (we will relocate you from anywhere)”
  • Candidates must be prepared to take full ownership of tasks and learn new context rapidly
    — “Ability to get up to speed on new context quickly and take full ownership of a task.”

How to stand out

  • Emphasize experience designing UI state logic for complex product scenarios
    — “Design and implement complex UI state logic across plans, limits, trials and payment states, where small mistakes are costly.”
  • Demonstrate ability to optimize performance in high-traffic, critical user flows
    — “Keep the interface fast and responsive, because every millisecond in the purchase flow affects conversion.”
  • Include examples of unit, integration, and end-to-end testing for payment scenarios
    — “Ensure product quality through unit, integration and end-to-end tests for key payment and onboarding scenarios.”
Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • Building revenue-critical product features
  • Developing onboarding and upsell strategies
  • Designing complex UI state logic
Typical background
Backend engineeringProduct growth

Skills & requirements

Required

Payment IntegrationsCheckout FlowsA/B TestingProduct Analytics

Preferred

UI State LogicPLG Experiments

Stack & domain

Payment IntegrationsCheckoutSubscription FlowsA/B TestingFeature FlagsProduct AnalyticsCI/CDBundlersProfilingPerformance OptimizationProduct SenseInterface DecisionsUser StatesIn-product CommunicationResilienceFocusHigh-intensity Startup EnvironmentBackend EngineeringProduct GrowthAi-native Experiences

About the role

Original posting from Higgsfield via Ashby

WHY WORK AT HIGGSFIELD AI?

Higgsfield AI is the fastest-scaling generative AI company in history, hitting $1B in annual revenue run rate, 30M+ users worldwide, 6M+ generations per day, and powering 390 of Fortune 500 brands.

We're building at the absolute frontier of AI-powered video creation and next-generation creative tools. Joining Higgsfield means becoming part of a high-impact team shaping the future of AI-native experiences, at a company that isn't just moving fast, but rewriting what fast looks like.

Who we are looking for

Everyone at Higgsfield is an A-player. We’re looking for teammates who bring:

  • A strong product sense and an understanding of how interface decisions affect conversion, retention and revenue.
  • The ability to design clear user states and in-product communication, not just build screens.
  • Broad context over narrow specialization: comfort working across product verticals and monetization mechanics.
  • Resilience and focus in a high-intensity startup environment, where priorities shift fast and the schedule isn’t always predictable.

What you will work on

  • Build the revenue-critical parts of Higgsfield products: paywalls, pricing pages, checkout and subscription flows used by millions of people.
  • Develop onboarding, upsell and in-product communication that drive conversion and retention.
  • Design and implement complex UI state logic across plans, limits, trials and payment states, where small mistakes are costly.
  • Run A/B tests and PLG experiments quickly, and work closely with analysts to turn data into product decisions.
  • Keep the interface fast and responsive, because every millisecond in the purchase flow affects conversion.
  • Ensure product quality through unit, integration and end-to-end tests for key payment and onboarding scenarios.

Your must haves

  • Experience building complex software and teaming up with others to get it done.
  • Strong communication, collaboration and commitment to completing projects.
  • Experience with payment integrations, checkout or subscription flows.
  • Experience with A/B testing, feature flags and product analytics.
  • Knowledge of CI/CD, bundlers, profiling and performance optimization.
  • Ability to get up to speed on new context quickly and take full ownership of a task.
  • Willingness to work in a fast-paced startup environment.

THE DEAL

  • Competitive salary in USD + stock options.
  • On-site role in our Almaty office (we will relocate you from anywhere)
  • Full-time position with high growth potential.

Source: Higgsfield careers (Ashby)

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