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Senior backend engineer with 5+ years building high-throughput distributed systems using Python, Kafka, and AWS. I own production architecture end-to-end, delivering measurable cost and reliability improvements. I’ve led major streaming and telemetry redesigns (handling 100K+ sustained events/sec), migrated managed Kafka across providers to cut costs, and built multi-tenant platforms and AWS media workflows. I’m focused on robust releases, correct operational practices, and automation-friendly system design.…Senior backend engineer with 5+ years building high-throughput distributed systems using Python, Kafka, and AWS. I own production architecture end-to-end, delivering measurable cost and reliability improvements. I’ve led major streaming and telemetry redesigns (handling 100K+ sustained events/sec), migrated managed Kafka across providers to cut costs, and built multi-tenant platforms and AWS media workflows. I’m focused on robust releases, correct operational practices, and automation-friendly system design.

Guillermo Lupiáñez Tapia

Back-End Developer, Software Engineer, Web Developer, +4

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Senior backend engineer with 5+ years building high-throughput distributed systems using Python, Kafka, and AWS. I own production architecture end-to-end, delivering measurable cost and reliability improvements. I’ve led major streaming and telemetry redesigns (handling 100K+ sustained events/sec), migrated managed Kafka across providers to cut costs, and built multi-tenant platforms and AWS media workflows. I’m focused on robust releases, correct operational practices, and automation-friendly system design.…Senior backend engineer with 5+ years building high-throughput distributed systems using Python, Kafka, and AWS. I own production architecture end-to-end, delivering measurable cost and reliability improvements. I’ve led major streaming and telemetry redesigns (handling 100K+ sustained events/sec), migrated managed Kafka across providers to cut costs, and built multi-tenant platforms and AWS media workflows. I’m focused on robust releases, correct operational practices, and automation-friendly system design.

Available to hire

Senior backend engineer with 5+ years building high-throughput distributed systems using Python, Kafka, and AWS. I own production architecture end-to-end, delivering measurable cost and reliability improvements.

I’ve led major streaming and telemetry redesigns (handling 100K+ sustained events/sec), migrated managed Kafka across providers to cut costs, and built multi-tenant platforms and AWS media workflows. I’m focused on robust releases, correct operational practices, and automation-friendly system design.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Spanish; Castilian

Fluent

English

Fluent

French

Intermediate

Work Experience

Senior Backend Engineer at Plénitas

January 1, 2025 - July 1, 2026

Led a redesign of playback telemetry for 100K+ sustained events/sec by publishing directly to Kafka and removing RabbitMQ from the critical path. Migrated managed Kafka from Confluent Cloud to Amazon MSK, reducing streaming costs by 80%. Built a Kafka-based viewing-progress service for a seven-figure user platform using event coalescing to reduce Redis write pressure. Designed AWS media workflows covering live ingestion, adaptive delivery, clipping, transcoding, and transcription. Built a multi-tenant MCP platform with token-derived isolation, tenant-scoped GraphQL tools, human approval for writes, and RAG over 100+ Confluence pages.

Python Backend Engineer at Deutsche Telekom

November 1, 2023 - July 1, 2025

Developed and operated 10+ production microservices with Python/FastAPI and PostgreSQL on AWS using Docker, Kubernetes, and Helm. Owned releases from application versioning through environment promotion, and diagnosed/resolved production failures caused by incorrectly applied database migrations.

Full Stack Engineer at Workdeck

February 1, 2023 - November 1, 2023

Built Python/FastAPI services and Angular features for a multi-tenant SaaS platform serving ~30 customer organizations. Delivered Shopify, LinkedIn, and Google integrations plus event-driven AWS workflows and containerized cloud deployments.

Full Stack Engineer at nucleoo

January 1, 2022 - February 1, 2023

Developed core Flask/MongoDB APIs and Angular modules for client-facing and internal product workflows; integrated third-party services and deployed on Azure. Redesigned Pytest and test-database architecture, increasing coverage from 30% to 80%, removing flaky tests, and stabilizing CI.

Junior Full Stack Developer at CXPLUS

February 1, 2021 - January 1, 2022

Helped build a cloud ERP/CRM for ISPs from scratch using Django REST and PostgreSQL. Designed core data models and deployed the containerized product on GCP.