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▸FOUR SERVICE LINES

Services

Each of these is scoped to a problem I see over and over, rather than a generic “engineering help” catch-all. Any of them can run as a paid assessment, a fixed-scope sprint, or a fractional retainer. We pick the shape that fits before work starts.

01

Fractional / Staff-Level Product Engineering

Ship product across Android and web (Next.js, TypeScript, Postgres) with a senior engineer embedded in your team's workflow. PRs, code review, and architecture decisions included.
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02

Plaid & Fintech Data Integration

Transactions, investment holdings, liabilities, and webhooks, built idempotent and signature-verified, with sensitive fields encrypted at the column level from day one.
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03

Security & Infrastructure Hardening

Envelope encryption, identity and access control (passkeys, MFA, session revocation), audit logging, CI/CD, secrets management, and backup/DR — the parts of "production-ready" that don't show up in a demo.
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04

AI-Augmented Engineering Enablement

Adopt Claude Code and multi-agent development workflows on a real codebase, with the review gates and guardrails that keep velocity from costing you quality.
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Not sure which one fits? Send project details→ and get a straight read on scope. Building without an engineering team? Start here instead→.

Dev▸Strike

Esteban Selaya

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