# Services

> Software architecture consulting by Dan Podina: GraphQL and Go systems, agentic and MCP architecture, validation of AI-built systems, compliance engineering, zero-downtime migrations and team enablement.

Architecture consulting for backends that have to hold: GraphQL and Go systems, agentic platforms, AI-built codebases that need validation, and platforms in regulated industries. I work as an independent architect. When a project needs hands, I bring in senior engineers I have shipped with for years and stay on as technical lead.

Groups: Build (build) Change (change) Prove (prove) 

## Pages

- [GraphQL Architecture and Federation](https://gqlteam.com/services/graphql-architecture/index.md): GraphQL architecture consulting: schema-first design, Apollo Federation, N+1 elimination and compliance-ready request tracing for teams that need one API over many systems.
- [Go Backend Systems](https://gqlteam.com/services/go-development/index.md): Go backend architecture consulting: service boundaries, event-driven design, resilience patterns and operability for high-throughput systems in regulated industries.
- [Agentic Systems and MCP Server Architecture](https://gqlteam.com/services/agentic-systems/index.md): Architecture for agentic systems: tool boundaries, MCP server design, RAG and knowledge bases, evaluation suites, guardrails, and cost and latency budgets. For teams putting LLM agents into production.
- [Architecture Validation for AI-Built Systems](https://gqlteam.com/services/architecture-validation/index.md): Architecture review for AI-built systems: start with a free 72-hour SystemTrails teardown, then a one to two week deep review of boundaries, data shape, coupling, failure modes and deployability.
- [Compliance Architecture: HIPAA, PCI-DSS, SOC 2, GDPR and the EU AI Act](https://gqlteam.com/services/compliance/index.md): Compliance engineering for regulated systems: HIPAA technical safeguards, PCI-DSS Level 1, SOC 2 controls, GDPR and EU AI Act obligations designed into the architecture, with auditor-ready documentation.
- [Legacy Modernization and Zero-Downtime Migrations](https://gqlteam.com/services/migrations/index.md): Zero-downtime migration planning: strangler pattern, GraphQL wrappers over legacy systems, parallel runs with automated comparison, gradual traffic shifting and a rollback at every step.
- [Team Enablement for AI-Assisted Development](https://gqlteam.com/services/mentoring/index.md): Mentoring and workshops for engineering teams adopting AI-assisted development: context engineering, review discipline, architecture literacy, and GraphQL and Go fundamentals. Sessions, team workshops or a retainer.

## How engagements work

- Discovery call: Thirty minutes, free. You describe the system and the decision you are facing; I tell you whether I can help and what it would take.
- Scope: A written scope with deliverables, timeline and price before any work starts. Fixed price for reviews and designs, retainer for ongoing work.
- Agreement: NDA on request, a short services agreement, and access to the repositories and diagrams I need.
- Delivery: Written deliverables, a walkthrough with your team, and the option of implementation through my network of senior engineers with me as technical lead.