Available for fractional & project-based work
Hi, I'm Gus, a senior software architect who designs and ships SaaS platforms, APIs, data pipelines, and AI integrations (MCP). A hands-on builder with a track record in cloud (AWS/GCP), databases, and security & identity. I help founders and product teams go from roadmap to production — balancing speed, reliability, and security.
I'm a lean software engineering partner that crafts secure, cloud-native platforms—from sleek React dashboards to high-performance Go, TypeScript, and Python back ends. Bring a concept or a legacy tangle—I'll architect, implement, and fortify it end-to-end.
Greenfield design or legacy untangling. From moduliths to microservices: domain modeling, tenancy strategy, storage layout, and service boundaries—with reference designs that spell out risks, trade-offs, and cost.
Design/implement REST, GraphQL, and gRPC with durable schemas and SDKs. Event-driven pipelines (Kafka/NATS) and columnar flows with DuckDB + Parquet for analytics-heavy apps and real-time UX.
LLM-powered copilots and workflow agents with Model Context Protocol adapters. Memory systems to reduce token load and latency; governance hooks keep data safe.
Identity and access done right: OAuth2/OIDC, SAML, SCIM, JWT, and scoped tokens. Service-to-service authentication, secrets management, and policy-as-code. Full audit trails and data governance to meet compliance needs without slowing teams down.
High-performance interfaces with React, SolidJS, or Astro. Bespoke admin dashboards, service radars, and data-driven UIs with strong DX and testability.
Hands-on leadership for 1-2 days/week: hiring loops, standards, and unblockers that keep teams shipping. Architecture reviews, implementation sprints, and ongoing advisory.
A few representative projects—from concept to fortified platform.
Integrated internal tools and data via Model Context Protocol. Built a PostgreSQL + DuckDB memory layer that cached embeddings and intermediate results—cutting agent token load by ~40% and p95 latency by ~30%—with audit trails and policy hooks for sensitive data.
Control plane with per-tenant SQLite (WAL/LiteFS) and analytical data plane with DuckDB + Parquet. Real-time SSE, governed endpoints, lineage, approvals, and RBAC with org/user grants.
Re-platformed from legacy SOAP/monolith to REST/GraphQL with OAuth/OIDC, rate-limiting, and full observability. Developer onboarding dropped from weeks to days with clean versioning and SDKs.
CSV/Parquet registry with schema inference, versioning, and lineage. Streamlined notebooks into governed, reusable endpoints powering dashboards and internal tools.
Go · Python · TypeScript · React · PostgreSQL · DuckDB · SQLite · GraphQL · AWS · GCP
Also: Kafka · NATS · Redis · MongoDB · Terraform · Snowflake · Prometheus/Grafana · NodeJS · Parquet
Best fit for seed → Series B startups and product teams who need to accelerate a roadmap, de-risk a build, or integrate AI safely.
I'm Gus, a hands-on software architect with deep experience across Go, Python, and TypeScript/React. I've built multi-tenant SaaS platforms, real-time data products, and AI integrations using the Model Context Protocol (MCP). My approach blends pragmatic architecture with builder's speed, strong security defaults, and a bias for maintainability.
Previously: led platform and data initiatives in fintech, identity, and analytics. Comfortable pairing with teams, mentoring, and leaving systems better than I found them.
Start with a short intro call. In 30 minutes we can align on goals, constraints, and where I can help fastest.
No prep required—bring an idea, a repo, or a deck. If you'd like, share links when booking.