Full Stack Engineer – Growth & Experimentation

This is a fully remote position, open to applicants in Brazil, +7 more countries.

📋 Description

• Rapidly develop and deliver consumer-oriented features utilizing React Native and TypeScript.

• Take full ownership of growth experiments from conception, design, execution, and evaluation to iteration.

• Leverage platforms like Statsig to conduct tests on a global scale or target specific markets.

• Enhance onboarding, activation, and feature exploration to boost conversion rates, engagement, and trading revenue.

• Continuously iterate on live features to improve performance.

• Create viral acquisition and value-added growth features to enhance Krak’s product suite.

• Contribute to backend services and APIs as needed for experiments.

• Analyze experiment outcomes and balance conversion improvements against other performance metrics.

• Determine whether to scale, refine, or terminate experiments based on data.

• Make independent technical decisions in response to shifting priorities and limited advance planning.

• Work closely with the Product team on a steady stream of growth experiments.

⛳️ Requirements

• A minimum of 3 years of software development experience in creating and deploying large-scale, consumer-facing applications.

• Solid hands-on experience with React and React Native.

• Proven track record of executing growth experiments in consumer-focused businesses with significant impact on conversion, activation, retention, or revenue.

• Competence in backend development; ability to design and implement services and APIs.

• Willingness to work with Rust.

• Strong foundational knowledge of JavaScript and TypeScript.

• Practical experience with APIs, WebSockets, real-time systems, mobile performance, testing, and modern development workflows.

• Experience in designing, conducting, and analyzing A/B tests, incorporating feature flags, statistical significance, product analytics, and funnel and cohort data.

• Demonstrated end-to-end ownership of product features and a robust product engineering perspective.

• Proactive and adaptable, able to function with minimal guidance in uncertain and shifting environments.

• Experience in customer-facing roles within fintech, digital banking, payments, trading, or crypto is a plus.

• Familiarity with Statsig or a similar experimentation platform is an advantage.

• Experience with Rust is beneficial.

• Knowledge of SQL and self-service analytics is advantageous.

• Fluency in AI concepts is a plus.

• Background in native mobile development, distributed systems, microservices, or scalable consumer technology is a plus.

🏝️ Benefits

• Participation in Kraken product dogfooding is mandatory for all new team members.

• Flexibility to work remotely.

• Chance to collaborate with a diverse, global team.

• Job-related skills or work-style assessments are included in the hiring process.

• Commitment to equal opportunity employment.