Hi, I’m Juan, a senior backend engineer focused on data-intensive systems, cloud-native backends, and AI-enabled product backends. I enjoy shipping robust, observable services and collaborating in remote-first teams to turn complex problems into reliable software. When not coding, I like shaping data pipelines, architectures, and platform decisions that scale with business needs. I’ve led cloud migrations, redesigned monolithic apps into microservices, and built high-volume data processing across logistics, streaming, and finance. I’m energized by distributed systems challenges around AI models and data at scale, and I value ownership, pragmatism, and strong engineering practices.…

Juan Fernandez Ridano

Hi, I’m Juan, a senior backend engineer focused on data-intensive systems, cloud-native backends, and AI-enabled product backends. I enjoy shipping robust, observable services and collaborating in remote-first teams to turn complex problems into reliable software. When not coding, I like shaping data pipelines, architectures, and platform decisions that scale with business needs. I’ve led cloud migrations, redesigned monolithic apps into microservices, and built high-volume data processing across logistics, streaming, and finance. I’m energized by distributed systems challenges around AI models and data at scale, and I value ownership, pragmatism, and strong engineering practices.…

Available to hire

Hi, I’m Juan, a senior backend engineer focused on data-intensive systems, cloud-native backends, and AI-enabled product backends. I enjoy shipping robust, observable services and collaborating in remote-first teams to turn complex problems into reliable software. When not coding, I like shaping data pipelines, architectures, and platform decisions that scale with business needs.

I’ve led cloud migrations, redesigned monolithic apps into microservices, and built high-volume data processing across logistics, streaming, and finance. I’m energized by distributed systems challenges around AI models and data at scale, and I value ownership, pragmatism, and strong engineering practices.

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Skills

Experience Level

Java
Expert
Node.js
Expert
AWS
Expert
Docker
Expert
Kubernetes
Expert
Python
Expert
Spring
Expert
TypeScript
Expert
Google Cloud
Expert
PostgreSQL
Expert
SQL
Expert
ETL
Expert
Kotlin
Expert
Scala
Expert
GraphQL
Intermediate
Prompt Engineering
Intermediate
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Language

English
Fluent
German
Fluent
Spanish; Castilian
Fluent

Work Experience

Senior Backend Engineer at Kineo GmbH (Enao Vision)
January 1, 2025 - Present
AI platform that captures factory conveyor-belt images via mobile and detects product defects through AI analysis. Built critical microservices for high-volume image processing in a Java / Spring Boot / PostgreSQL ecosystem. Implemented AWS event-driven messaging with SNS/SQS and refined queue-polling mechanisms for reliable processing at scale. Created RESTful endpoints for mobile integration and provisioned infrastructure with Terraform. Optimized database queries and helped establish a stable production environment.
Backend Engineer at Paritii LLC
December 1, 2024 - February 28, 2025
Cloud migration and LLM integration for an AI product. Maintained the API and OpenAI LLM integration (Node.js, NestJS, Next.js). Migrated the application from AWS to GCP (replacing Cognito, S3, SQS, Lambda with Firebase Auth, Cloud Storage, Pub/Sub, Cloud Run). Implemented IaC with Terraform and set up separate local, hybrid, and production environments with optimized CI/CD. Hardened security through VPC integration and controlled database access.
Senior Software Engineer at REWE Group
January 1, 2024 - November 30, 2024
Led migration of on-prem Kubernetes clusters to GCP Cloud Run and Functions, enabling scalable infrastructure. Redesigned a monolithic application into domain-driven microservices, improving modularity and delivery speed. Built REST APIs (Java / Spring Boot), maintained CI/CD and IaC with Terraform, and established monitoring and alerting on GCP.
Senior Software Engineer at Kühne + Nagel
October 1, 2022 - December 31, 2023
Six applications for the Airfreight Europe team, moving data between customs, airports, warehouses, and logistics partners. Migrated AMQP queues to Apache Kafka topics and migrated OpenShift OCP3 → OCP4 with CI/CD pipelines and Infrastructure as Code. Reduced critical code vulnerabilities to zero and raised test coverage above 80%. Cut costs by ~€20k/year by bringing third-party solutions in-house, and implemented alerting/logging that reduced support escalations.
Senior Software Engineer at TV NOW / RTL+
March 1, 2021 - October 31, 2022
Video and audio streaming platform — Offers team (products, promotions, permissions, eligibility). Built a subscription-based permissions system and a promotions system for user acquisition. Migrated microservices from AWS ECS into a Kubernetes cluster and implemented end-to-end and load testing for the project.
Tech Lead / Software Engineer at Bayerische Landesbank
April 1, 2019 - April 30, 2020
German building-society bank — SaaS for restructuring savings contracts and managing overdue accounts. Acted as tech lead, mentoring the team on Node.js, Angular, CI/CD, and Docker containers. Redesigned a legacy monolith into microservices and built a lightweight SPA replacing a costly third-party tool.
Software Engineer at apt solutions GmbH
October 1, 2016 - April 30, 2019
Built REST APIs and worked across monolithic applications (servlets/JSP); developed a Scala data-aggregation application for a telecommunications company. Built web and mail scrapers for lead acquisition and automated repetitive workflows.

Education

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Qualifications

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Industry Experience

Media & Entertainment, Transportation & Logistics, Financial Services, Professional Services, Software & Internet

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