Data & Analytics Skills

Medical device software development covering IEC 62304 software lifecycle, ISO 14971 risk management, design controls, software verification and validation, FDA regulatory submissions, software change control, and cybersecurity for medical devices.

Telehealth system architecture covering HIPAA-compliant video consultation, remote patient monitoring, patient portal design, asynchronous telehealth, and billing integration with telehealth-specific CPT codes.

Designs algorithms with formal analysis — Big-O/Theta/Omega, amortized analysis, recurrence relations (Master theorem), correctness proofs (loop invariants, induction, reduction), and paradigm selection (greedy, divide-and-conquer, dynamic programming, backtracking). Use when analyzing efficiency, proving correctness, comparing approaches, or selecting optimal algorithms for given constraints.

Implements graph algorithms — BFS/DFS traversal, shortest paths (Dijkstra, Bellman-Ford, Floyd-Warshall, A, Johnson's), minimum spanning trees (Kruskal, Prim), topological sort, strongly connected components (Tarjan, Kosaraju), maximum flow (Ford-Fulkerson, Dinic), and bipartite matching (Hopcroft-Karp, Hungarian). Use when solving traversal, shortest path, network flow, connectivity, or scheduling problems.

Implements sorting and searching algorithms — comparison sorts (quicksort/introsort, merge sort, heapsort, Timsort), non-comparison sorts (radix, counting, bucket), binary search variants (lower/upper bound, answer-space search), order statistics (quickselect, streaming median), string searching (KMP, Rabin-Karp, Boyer-Moore, Aho-Corasick, suffix arrays), and external sorting. Use when implementing sort orders, optimizing search in sorted data, multi-pattern string matching, or sorting data larger than memory.

Implements production-ready APIs across Node.js (Express, NestJS, Fastify, Hono, ElysiaJS, tRPC), Go (Gin, Echo, Fiber, Chi), Rust (Axum, Actix-web), Java (Spring Boot 3, Quarkus), .NET (ASP.NET Core 8), Ruby (Rails 7, Grape), Elixir (Phoenix), and PHP (Laravel, Symfony). Covers middleware pipelines, RFC 7807 error handling, rate limiting, OpenAPI 3.1 codegen, tRPC, GraphQL servers (Apollo, Mercurius, Yoga, gqlgen, async-graphql), and API versioning. Use when building API endpoints, adding middleware, implementing error handling, or generating API docs.

Implements authentication and authorization systems including JWT token management, session handling, OAuth2 flows, OpenID Connect, RBAC/ABAC enforcement, API key management, multi-tenancy auth isolation, SSO integration, and refresh token rotation. Use when building login flows, protecting endpoints, implementing permissions, or integrating identity providers.

Deep operational guide for 8 multi-model databases. ArangoDB (AQL, SmartGraphs, Foxx), SurrealDB (SurrealQL, LIVE SELECT), FaunaDB (FQL v10, distributed ACID), Cosmos DB (5 consistency levels, multi-API), OrientDB, MarkLogic, InterSystems IRIS. Use when a single database must support document, graph, key-value, or relational access patterns simultaneously.

Deep operational guide for 20 relational/SQL databases. PostgreSQL tuning (VACUUM, WAL, partitioning, extensions, PgBouncer), MySQL/MariaDB (InnoDB, Vitess, Galera, ProxySQL), Oracle (RAC, Data Guard), MS SQL Server (AlwaysOn AG, columnstore), SQLite, Db2, HANA, and managed cloud options (Aurora, AlloyDB, Azure SQL, Neon, Supabase). Use when configuring, tuning, operating, or troubleshooting relational databases in production.

Expert guidance on Android native development — Kotlin idioms, Jetpack Compose UI, Room database, Hilt dependency injection, Coroutines and Flow for async work, WorkManager for background tasks, Gradle build configuration (KTS), Material Design 3 theming, and Navigation Compose. Use when building or optimizing native Android applications.

Scaling patterns: horizontal/vertical scaling, async processing, data partitioning, connection pooling, rate limiting, backpressure. Use when scaling services.