Front-End Engineer – React + TypeScript (Contract) Core Skills (“Must-Have”) Modern React wizardry Solid with React 18+/Hooks, TypeScript, and component-level state management (Context, Zustand, or Redux) Comfortable building responsive UIs CSS-in-JS, Tailwind, or vanilla CSS Modules Meets WCAG 2.1 AA accessibility standards Design-system implementation Translate Figma components & design tokens into pixel-perfect, reusable code Document variants in Storybook (or similar) for designers and fellow engineers Engineering craftsmanship Strong grasp of REST/GraphQL integration, testing (Jest + RTL/Cypress), Git flows, and CI/CD pipelines Obsessed with performance (Core Web Vitals) and bundle hygiene Cross-functional collaboration Work hand-in-hand with designers, back-end Go engineers, and product managers; clarify edge cases early Review PRs, give/receive feedback, and demo progress in agile ceremonies Day-to-Day Responsibilities Ship incremental UI upgrades to LaunchDarkly’s SaaS console—implementing the exact components designers compose in Figma Extend & harden the React component library, aligning props, variants, and accessibility patterns with design-system specs Wire up feature flags & telemetry to support safe rollouts and gather usage data for every new UI slice Enforce quality gates through automated tests, a11y checks, and performance budgets before merges hit production Nice-to-Have Extras Hands-on experience with LaunchDarkly, Split, or any feature-flag SDK in production apps Familiarity with AI-assisted tooling (e.g., v0.dev, Copilot, Cursor) to accelerate scaffolding Exposure to data-visualization libs (Recharts, Chart.js, VisX) for analytics dashboards Sample Mini-Projects You Might Tackle Scenario: Modal → full-screen flow Your Engineering Deliverable: Build the “Create Metric” wizard as a full-screen React route, reusing existing Button, Stepper, and FormControl components; ensure keyboard nav & deep-linking to each step Scenario: MetricHealthCheck widget Your Engineering Deliverable: Implement a self-contained that shows green/amber/red states, pulls live data via GraphQL, and exposes an ARIA-friendly tooltip for unmet requirements Show more Show less

LaunchDarkly — Product Designer (Contract) Core Skills (“Must-Have”) Figma mastery & design-system mindset Comfortable working inside an existing reusable component library Knows common SaaS UI patterns (modals, tables, wizards, dashboards) and can apply them consistently App-flow comprehension Quickly understands how current features work and extends them without breaking mental models Tight designer-engineer collaboration Partners daily with front-end engineers; speaks “component-level” language (props, states, breakpoints) Provides red-line specs, edge-case mocks, and async feedback in tools like Storybook or GitHub PRs Day-to-Day Responsibilities Ship incremental UI upgrades to the core LaunchDarkly SaaS platform (think: polishing flows rather than ground-up rebrands) Assemble layouts by snapping together pre-built Figma components—adding only what’s missing and documenting new patterns Validate usability through quick internal reviews or lightweight user checks; iterate based on findings and stakeholder input Nice-to-Have Extras Familiarity with AI-enhanced design tools (e.g., Locofy, V0.dev, Cursor) to accelerate wire-up or code hand-off Experience visualizing “health” or “status” states in analytics / monitoring products Sample Mini-Projects You Might Tackle Scenario: Convert modal → full-screen Take an existing “Create Metric” modal and redesign it as a full-screen wizard that feels native to the app shell Scenario: Metric health-check widget Craft a compact UI that instantly shows whether all metric requirements are met (green/amber/red + tooltip drill-downs) Show more Show less

Back-End Engineer – Go + PostgreSQL (Contract) Core Skills (“Must-Have”) Golang expertise Idiomatic Go 1.21+, goroutines / channels, std-lib HTTP & sql packages, context-aware code Relational-data mastery Hands-on with PostgreSQL 13+ — schema design, indexes, migrations (Flyway, Goose, or pg-migrate) Comfortable writing performant SQL and debugging query plans API craftsmanship Design and version REST/JSON (or gRPC) endpoints; enforce contract tests and backward compatibility Quality & Dev-Ops hygiene Unit + integration tests (Go test / Testcontainers), GitHub Actions or similar CI, Docker-ised local setup Observability hooks (Prometheus metrics, structured logging, Sentry) Collaboration fluency Pair daily with React front-end & designers; discuss payloads, edge cases, and rollout plans up front Day-to-Day Responsibilities Ship incremental data-model and API updates — e.g., add a column with default values, write safe up/down migrations, expose the field in existing endpoints, and coordinate UI changes Design small new features such as derived “metric-health” tables or aggregated views that power dashboards Guard performance & reliability — run load tests, add indexes, set query timeouts, and handle graceful fallbacks behind feature flags Keep codebase clean — review PRs, refactor shared helpers, and prune dead code as product evolves Nice-to-Have Extras Production experience with a feature-flag SDK (LaunchDarkly, Split, etc.) to stage database changes safely Familiarity with event streaming (Kafka / NATS) or background job runners (Go workers, Sidekiq-like queues) Exposure to container orchestration (Kubernetes, ECS) and infrastructure-as-code (Terraform, Pulumi) Sample Mini-Projects You Might Tackle Scenario: Add property to existing entity Write migration to add source_type column to metrics, backfill with default, update GET/POST /metrics handlers & swagger docs, unit-test both happy & error paths Scenario: New aggregated view Create new table metric_health that rolls up pass/fail counts per metric, expose /metrics/{id}/health endpoint returning red/amber/green status with pagination, instrument with Prometheus counters Show more Show less