Ezequías
Aramburu
Specializing in backend architecture engineered for performance, reliability, and cost efficiency at scale.
9+ years building production systems end to end. I turn ambiguous requirements into working infrastructure.
type Engineer = {
name: "Ezequías Aramburu";
role: "Senior Software Engineer";
focus: "Backend" | "Full Stack";
experience: "9+ years";
};Core Stack
About
I'm a product-oriented software engineer with 10+ years shipping production systems across fintech, e-commerce, logistics, healthcare, and AI-native platforms. I lean backend—Node, NestJS, Postgres, and AWS — with strong hands-on depth in React, Next.js, React Native, and LLM orchestration.
I'm comfortable owning architecture decisions end to end: from agent design and infrastructure observability down to write-path performance and CI/CD hygiene. I do my best work when engineering, product, and design move together.
Recent Projects
HighRoad Capital
AI-native platform for commercial real estate deal screening. Ingests broker emails and PDFs, generates screening memos and builds searchable institutional memory.
TaDa
Drink delivery platform offering multiple service models: Club Tada subscriptions, on-demand delivery, and curated experiences.
SisMaster
Municipal management platform automating payroll, tax, licensing, and cemetery operations for local governments.
Lemon Cash
Crypto wallet app with FIAT gateway and traditional banking features integrated into the mobile experience.
ShareWillow
Web platform for employee profit sharing and equity incentive management in growing startups.
BenkoPay
White-label wallet solution helping businesses launch branded digital payment platforms.
Bluon
HVAC mobile platform connecting technicians with diagnostics, support, and real-time parts ordering.
MediLine
Telemedicine platform offering 24/7 virtual consultations, digital prescriptions, and health product delivery.
Mirkus
Asset management platform for the Oil & Gas industry with real-time analytics and custom workflows.
Iron Sheepdog
Fleet management platform for short-haul trucking with scheduling, dispatch, and mobile tracking.
Mofiler
Analytics platform ensuring GDPR, LGPD, and PDPA compliance through privacy-first data handling.
Experience
FLY DEVS
New York, United States | RemoteSenior Software Engineer
- Stack: TypeScript, JavaScript, Java, Python, React.js, Next.js, React Native, NestJS, PostgreSQL, AWS (Lambda, EC2, SES, SQS, CloudWatch, Cognito, DynamoDB, S3), Supabase, tRPC, TypeORM, Vercel, Docker, Redis, Firebase, New Relic.
AI-Native Real Estate Platform · Dec 2025 – May 2026
- Built and maintained an AI orchestration layer supporting dynamic model switching across providers, enabling the product to adapt inference costs and capabilities per use case.
- Audited and rewrote document-upsert paths against an EAV schema (enrichments → keys → values → anchors), converting per-row writes to batched queries to remove lock contention on the hot path.
- Closed a production observability gap end-to-end: Vercel log drains → Slack with enough context to land directly on the failing function; mirrored the pattern for Lambda/CloudWatch on the email-ingestion side.
- Shipped a CI/CD step that diffs deployed Supabase RPCs against local SQL files and auto-drops orphans, keeping the schema honest across dev and main.
- Instrumented PostHog session replay with PII-aware masking for UX debugging across the active customer base.
- Drove a security review of the SES inbound-email pipeline (SPF/DKIM/DMARC handling) since the from-address determines deal ownership; documented behavior and the decision rationale.
E-Commerce Platform · 2023 – 2025
- Owned end-to-end delivery across a React Native production app, internal Next.js dashboards, and core NestJS and Java services integrated with third-party providers.
- Redesigned product search with Redis and MiniSearch, improving response times and ranking quality on a high-traffic catalog.
- Built async pipelines, background workers, and batch processes for promotions, catalog updates, and back-office workflows—improving traceability and cutting manual operator interventions.
- Refactored complex commercial-flow business logic across services for maintainability and operational clarity.
- Cut AWS spend by 38% through performance tuning, instance right-sizing, and architectural changes.
LEMON CASH
Buenos Aires, Argentina | RemoteSenior Mobile Engineer
- Stack: TypeScript, React Native, Firebase, Jest, Bitrise, Sentry, App Center, Datadog, SonarQube, GitHub Actions.
- Collaborated with cross-functional teams to deliver high-impact solutions in a fast-paced environment, ensuring timely delivery of product milestones.
- Led a complete app rebrand, rebuilding the component library from scratch following Atomic Design principles, improving UI consistency and accelerating future feature development.
- Drove code review and contributed to release engineering in a fast-moving fintech environment.
- Integrated Sentry and Datadog monitoring, reducing mean time to detect (MTTD) production incidents by ~35%.
DEV BASE
Los Angeles, United States | RemoteFull Stack Engineer
- Stack: JavaScript, React Native, React Query, Auth0, Redux, Jest, Firebase, App Center, Express, NestJS, Node.js, MongoDB, Mongoose, AWS EC2, Docker.
- Played a key role in shaping the design and structure of new features, collaborating with a cross-functional team to ensure they fit seamlessly into the existing project.
- Took charge of refining older code, making it more efficient and easier to work with.
- Conducted code reviews, offering insights to enhance overall code quality and maintain consistency across the board.
- Scaled an HVAC platform from the ground up to 15k+ users, delivering a full rebrand and a continuous stream of new features across web and mobile.
PROMINENTE S.A.
Córdoba, Argentina | On-siteSoftware Engineer
- Stack: TypeScript, JavaScript, Express, Node.js, Next.js, NestJS, React Native, React.js, Angular, PostgreSQL, Sequelize, MongoDB, Mongoose, Redis, Firebase, Auth0, JWT, Heroku, AWS EC2, AWS Lambda, Karma, Enzyme, RabbitMQ, Docker.
- Led the architectural redesign of applications, optimizing performance, scalability, and maintainability through the adoption of best practices and design patterns.
- Collaborated closely with stakeholders to understand project requirements and objectives, ensuring the delivery of high-quality solutions that meet client needs.
- Built a white-label wallet platform from scratch, designing the architecture to support full customization across branding, features, and business logic for multiple clients.
TOPTIVE S.A.
Córdoba, Argentina | On-siteSoftware Engineer
- Stack: JavaScript, TypeScript, Ruby, Express, React Native, React.js, AngularJS, Ruby on Rails 4, Active Admin, Active Records, PostgreSQL, Sequelize, MongoDB, Mongoose, Axios, JWT, Redux, Firebase, Karma, Enzyme, Jest, Heroku, AWS EC2, Docker.
- Built a logistics platform for dump-truck dispatch and fleet coordination, owning full-stack delivery across web and mobile.
- Contributed to the design, implementation, and code review processes for web and mobile applications.
- Conducted regular code reviews, providing constructive feedback and mentoring to new team members to enhance their skills and capabilities.
Skills
Also bring to the table
Education
National University of Río Cuarto
Computer Analyst
National University of Río Cuarto
Bachelor's in Computer Science
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