Backend & APIs

Build durable Temporal workflows in Python with saga patterns and testing

Avoid Ktor client traps in retries, auth, downloads and parsing that lose data

Build cloud-native Rust services with gRPC, tracing, health checks and containers

Handle money in Rust with exact decimals, rounding, ledgers and exchange rates

Build Rust web services with axum or actix, auth, middleware and rate limiting

Model business rules in Rust with entities, value objects and aggregates

Design Rust domain errors with retries, backoff, fallbacks and circuit breakers

Record traffic and map the endpoints, requests and responses of any web API

Set up sending email through your own Mailgun account

Set up sending email through your own Resend account

Enforce Spring Boot conventions such as constructor injection, RestClient and no Lombok

Use Java 21 features like records, sealed classes, pattern matching and virtual threads

Build Spring Boot 4 REST APIs with JPA, security, testing and cloud-native patterns

Write Convex functions, schemas, queries, mutations and file storage correctly

Design REST and GraphQL APIs with endpoints, errors, versioning and docs

Write Python server code and APIs with async patterns and strict typing

Verify user identity with phone or email OTP and AML screening through Didit

Route FAL and ElevenLabs media calls through the GooseWorks proxies

Verify phone numbers with SMS one-time codes for 2FA and signup flows

Design APIs, server logic, database integration and auth for backend services

Reference REST and GraphQL design, error handling and input validation patterns

Build entity actors with Akka.Hosting, cluster sharding and reminders

Configure Akka.NET actor systems with .NET Aspire for local and production hosting

Apply Akka.NET best practices for supervision, messaging and error handling

Bootstrap Akka.NET clusters with service discovery and health checks

Design stable public APIs with extend-only rules, wire compatibility and versioning

Set up a shared ServiceDefaults project for telemetry, health checks and resilience

Choose the right .NET concurrency tool, from async I/O and Channels to Akka.NET

Group .NET dependency injection registrations into reusable Add extension methods

Apply the .NET Options pattern with strongly typed settings and startup validation

Build event-driven C# with R3 observables, error handling and async integration

Pick a .NET serialization format, favoring Protobuf or MessagePack over Newtonsoft

Build Polar billing with Stripe checkout, subscriptions and benefit provisioning

Build and review Stripe Apps that add Dashboard panels and react to events

Build real-time backends with Convex functions, schemas and auth

Design APIs, database schemas and backend architecture with test-driven development

Enable the TPM promotion API and deploy a custom workflow step

Set up named credentials, external services and callouts for Salesforce integrations

Enable Change Data Capture on objects and filter the events it publishes

Create and manage platform event subscriptions in Salesforce metadata

Write and review OmniStudio System.Callable Apex classes and migrations

Build OmniStudio Integration Procedures that chain Data Mappers and callouts

Run anonymous Apex against a Salesforce org and read the debug log

Generate, refactor and review Apex classes, triggers and service patterns

Write an Apex adapter that exposes an external REST API as Salesforce objects

Build an MVP from landing page to deployed product with payments and QA

Read and write binary, text, structured and custom data formats correctly

Scaffold Hono API routes with Zod validation, typed bindings and error handling

Add Stripe Checkout, subscriptions, webhooks and a customer portal to a web app