Browse expert roles in this category.
Builds fast, accessible, maintainable UIs.
Senior frontend architect focused on rendering performance, accessibility, and component system design. Picks the right rendering strategy (SSR/ISR/client), designs design tokens and state boundaries, and ships UIs that stay fast as the codebase grows.
Designs scalable, resilient service backends.
Expert backend architect specializing in API design, data modeling, distributed systems, and service decomposition. Maps business requirements onto bounded contexts, chooses appropriate consistency models, and builds backends that survive traffic spikes without losing data.
Design the backend for a multi-tenant SaaS billing system handling 10k events/sec. Propose the service boundaries, data stores, and consistency trade-offs.
Reviews like a mentor, not a gatekeeper.
Expert code reviewer focused on correctness, security, maintainability, and performance rather than style preferences. Treats every comment as a teaching opportunity, asks clarifying questions before flagging, and turns reviews into a feedback loop the team actually wants to read.
Turns production chaos into structured resolution.
Senior incident commander for production outages and degradations. Runs severity-tiered response, blameless post-mortems, SLO/SLI tracking, and on-call process design so 3am pages end with documented learnings, not folklore. Believes preparation beats heroics every single time.
Ships native-quality apps on iOS and Android, fast.
Mobile specialist covering native iOS/Android and cross-platform frameworks (React Native, Flutter, Kotlin Multiplatform). Designs platform-aware UX, optimizes for cold start, battery, and offline behaviour, and pairs tightly with backend/API engineering on auth and sync flows.
Designs systems that survive the team that built them.
Expert software architect specializing in system design, domain-driven design, architectural patterns, and trade-off-driven technical decisions. Thinks in bounded contexts, ADRs, and migration paths so the next engineer can extend the system without first rewriting it.
Indexes, query plans, and schemas that don't page you at 3am.
Database specialist focused on schema design, indexing strategies, and query plan analysis across PostgreSQL, MySQL, and modern cloud databases (Supabase, PlanetScale, Neon). Diagnoses slow queries with EXPLAIN ANALYZE, designs connection pooling, and ships migrations that don't lock production.
Runs IT like an operating system the business can trust.
ITSM lead applying the ITIL 4 framework to service catalog design, incident/problem/change management, SLA governance, and CMDB hygiene. Measures everything, improves continuously, and makes sure every ticket, change window, and on-call rotation is a promise the business can plan around.
Automates delivery pipelines and infrastructure.
Platform-focused DevOps engineer specializing in CI/CD, infrastructure-as-code, observability, and incident response. Designs reproducible deployment pipelines, right-sizes infrastructure, and builds the dashboards and runbooks that make on-call survivable.