Senior Backend Cloud Engineer
Systemsbuilt forserious volume.
I am Alejandro Carvajal, a senior backend cloud engineer building event-driven platforms, secure REST APIs, and distributed workflows across tax, fintech, energy, and commerce sectors.
Animated high-volume event-driven checkout flow from client through gateway and orders, through an outbox and event bus, to billing, fulfillment, and an idempotent ledger.
What I build
Distributed backend architecture with clean contracts and measurable outcomes.
Event-driven systems
Kafka, RabbitMQ, SQS, Temporal, Saga, Outbox, idempotency, and resilient message flows.
Cloud architecture
AWS ECS Fargate, S3, Aurora, RDS, deployment integration, and cost-aware elasticity.
Secure APIs
JWT, RBAC, OAuth, OIDC, SSO, contract-heavy request mapping, and service boundaries.
Backend delivery
Java, C#, TypeScript, Spring Boot, .NET, Node.js, NestJS, Express, and modular design.
Experience
From transaction-heavy platforms to workflow automation that holds up in production.
2026
Senior Software Engineer
Munch / startupWorking on the real-time and workflow foundations of an early-stage gastrotech startup, shaping AI-ready service boundaries and dependable product experiences as the idea moves quickly.
Temporal / Kubernetes / WebSockets / TypeScript2025
Senior Software Engineer
Electronic Tax SystemsBuilt secure tax-exemption APIs, contract mapping flows, and hexagonal XML-to-JSON integrations for Vertex O Series.
C# / .NET / EF Core / JWT / RBAC2023-2024
Software Engineer
FiservDelivered chargeback automation with event correlation, safer rollouts, smoke checks, and TDD around dispute workflows.
Java 21 / Spring Boot / Kafka / Temporal / AWS2022-2023
Software Engineer
Frontera IngenieriaHardened API gateway patterns, OAuth-aligned security, pub/sub workflows, retries, Outbox, and Saga orchestration.
Java 17 / Spring Cloud / RabbitMQ / Kafka2018-2022
Software Engineer
Yuxi GlobalBuilt multi-region services and backend foundations for distributed client platforms.
ASP.NET / Spring Boot / SQL Server / Node.js2018-2022
Software Engineer
ValidOptimized SQL Server procedures and introduced correlation IDs to make service behavior easier to trace and support.
ASP.NET / SQL Server / REST APIs2018-2022
Software Engineer
DigimarketingShipped REST reporting APIs and backend integrations that turned operational data into usable reporting workflows.
Spring Boot / Node.js / REST APIsBeyond the stack
Munch is an early bet on the next interface between intelligence, culture, and the table.
Munch / concept in progress
Gastrotech has a frontier because it barely has a name.
Munch is my long-view exploration of what happens when food, software, and human context are designed together. The goal is not to automate the soul out of the experience, but to make discovery, personalization, and participation feel more alive.
AI is moving from a tool we consult to a layer inside how we make, choose, and experience things. I want to be part of the pioneering work that connects that intelligence with taste, hospitality, and culture.
foodcontextculture
dataAI
MUNCHgastrotech / undefined
Define the field
Gastrotech is not a fixed category yet. That ambiguity leaves room to shape the term through real products and useful rituals.
Build the bridge
Recommendation, logistics, kitchens, commerce, and sensors are already moving. Munch brings those threads into one experience.
Explore what remains
The open questions are the interesting part: trust, shared context, creativity, and technology that still feels human.
GitHub / open work
A visible trail for the systems behind the Gastrotech Pioneer.
I keep selected work open so the thinking can be followed as it grows. Some projects touch food and culture directly; others explore the useful primitives underneath: Python, WebSockets, Kafka, Redis, and independent services.
event-driven commerce
L8TESTPR0JECTS/EventDrivenStore
EventDrivenStore
A general commerce base for an event-driven system, split across independent bounded contexts and service-owned databases.
Explore projectgastrotech workbench
L8TESTPR0JECTS/GastroFlow
GastroFlow
A focused build space for exploring how food, context, and software can become one product experience.
Explore projectrealtime systems
L8TESTPR0JECTS/HitCounter
HitCounter
A small but serious WebSocket playground: daily state, Redis-backed coordination, and a React surface that stays live.
Explore projectStack
Practical tools for secure APIs, event streams, cloud operations, and data-heavy services.
JavaC#TypeScriptSpring Boot.NETNode.jsNestJSExpressJavaC#TypeScriptSpring Boot.NETNode.jsNestJSExpress
KafkaRabbitMQTemporalSQSSagaOutboxCQRSIdempotencyKafkaRabbitMQTemporalSQSSagaOutboxCQRSIdempotency
PostgreSQLMySQLMongoDBRedisDynamoDBAuroraRDSSQL ServerPostgreSQLMySQLMongoDBRedisDynamoDBAuroraRDSSQL Server
OAuthOIDCJWTRBACAuth0KeycloakgRPCREST APIsOAuthOIDCJWTRBACAuth0KeycloakgRPCREST APIs
programmeralek.com