Senior Frontend Engineer - Spec-Driven, High-Perf UI

BetWarrior; Argentina; Remote; ARS 3,000,000 - 6,000,000; Full time

Job summary

BetWarrior is seeking a Frontend Software Engineer with a product focus to join multidisciplinary squads. You will own end-to-end problem solving, refine requirements into API contracts and specs, and craft robust, scalable frontend architectures for high-traffic environments.

You will collaborate with Product and UX to translate business scenarios into acceptance criteria and well-defined system behaviors, writing documentation upfront.

Qualifications

• 5+ years of software engineering experience with complex problems.
• Experience writing OpenAPI/Swagger specs and UML/sequence diagrams.
• Proficiency in JavaScript/TypeScript and React.
• Familiarity with Given-When-Then and BDD practices.

Responsibilities

• Lead technical analysis from product/UX acceptance criteria.
• Define state diagrams, API contracts, and functional specs before coding.
• Model complex state flows for high-traffic, low-latency apps.
• Collaborate with Product and UX teams as a technical bridge.
• Translate scenarios into clear acceptance criteria and system behaviors.

Skills

JavaScript/TypeScript

React

Node.js

Gherkin/BDD

OpenAPI/Swagger

UML diagrams

Performance optimization

Tools

Markdown/gherkin specs

MD documentation

Job description

BetWarrior is seeking a Frontend Software Engineer with a product focus to join multidisciplinary squads. You will own end-to-end problem solving, refine requirements into API contracts and specs, and craft robust, scalable frontend architectures for high-traffic environments.

You will collaborate with Product and UX to translate business scenarios into acceptance criteria and well-defined system behaviors, writing documentation upfront.