Staff Software Engineer, Frontend

Block Labs

. Own the frontend end to end, including architecture, conventions, quality standards and production behavior of a multi-brand platform .

Posted 10/14/2026full-timeRemote • PortugalLeadWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in building and owning production consumer-facing web applications, with a strong focus on frontend architecture, design systems, and the effective use of AI coding agents. Capable of delivering high-quality, accessible user interfaces while collaborating with cross-functional teams and maintaining best practices.

Highest-signal resume keywords

ReactNext.jsModern TypeScriptAI Coding AgentsDesign System Ownership

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Frontend DevelopmentProduction Web ApplicationsComponent Library DevelopmentCore Web VitalsRendering Strategies

Soft Skills

Attention to DetailClear CommunicationAutonomous Work

Tools & Technologies

CI/CDCloud Environments

Industry Keywords

FintechCryptoReal-Time GamingEntertainmentHigh-Traffic Consumer Products

Tech Stack

Tools & technologies

CloudJavaScriptNext.jsReactTypeScript

About the role

Key responsibilities & impact

Own the frontend end to end, including architecture, conventions, quality standards and production behavior of a multi-brand platform
Make adding a brand a configuration change through theming, brand-aware routing and content, and boundaries between shared and brand-specific code
Build and own the design system and component library used by engineers, designers and AI-assisted prototyping
Turn product prototypes into production features quickly
Build workflow and tooling to make prototype-to-production delivery repeatable
Use AI coding agents daily with quality checks that maintain standards at agent speed
Establish best practices for how others use AI coding agents
Ship consumer-facing UI with attention to detail, performance and accessibility
Raise UX and product concerns with product owners using alternatives and working examples
Work as an individual contributor with end-to-end product ownership and accountability for production behavior

Requirements

What you’ll need

8+ years building production consumer-facing web applications, several of them at Staff or equivalent ownership
Experience taking a frontend from a rough brief to production and owning it after launch
Extensive use of AI coding agents as a primary development method, with an established setup and quality controls
Deep expertise in React, Next.js and modern TypeScript
Clear opinions on rendering strategies and when each is inappropriate
Hands-on experience building or re-architecting multi-brand, multi-tenant or white-label frontends
Experience building or owning a design system and component library
Strong UI and UX sensibility
Experience working with non-engineers who build with AI tools
Demonstrable Core Web Vitals work in production
Ability to work autonomously with light process and write clearly
Strong command of written and verbal English
Nice to have: real-time, high-interaction consumer interface experience
Nice to have: fintech, crypto, real-time gaming, entertainment or other high-traffic consumer product background
Nice to have: tooling, skills or integrations improving agent performance in a codebase or design system
Nice to have: working knowledge of CI/CD and cloud environments