Sergi – Kubernetes, Golang, RabbitMQ, experts in Lemon.io

Sergi

From Netherlands (UTC+2)flag

Back-end Web Developer|Senior

Sergi – Kubernetes, Golang, RabbitMQ

Sergi is a Senior backend engineer with 7 years of experience, specializing in backend development and distributed systems. He has led production services in event-driven architectures and delivered AI agent and RAG features for live systems. He takes strong ownership of his work, communicates clearly with clients and stakeholders, and is comfortable working in startup environments where pragmatic architectural decisions and reliable delivery are essential.

7 years of commercial experience in
AI
Human resources
Logistics
Social media
Chatbots
Dev tools
Messaging software
Main technologies
Kubernetes
5 years
Golang
5 years
RabbitMQ
4 years
Distributed Systems
7 years
Additional skills
PostgreSQL
Microsoft Azure
Terraform
Redis
Docker
Angular
AWS
Flutter
MongoDB
Typescript
Node.js
Machine learning
C
DevOps
AI agent development
RAG
Java
Android
C#
React
Grafana
ElasticSearch
.NET Core
Direct hire
Possible
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Experience Highlights

Senior Software Engineer
May 2022 - Jun 20264 years
Project Overview

A business messaging platform supporting WhatsApp Business and SMS, with configurable state-machine and AI chatbots for automating customer conversations. The platform integrates with external services to exchange data with user conversations, enabling businesses to build automated messaging workflows and service interactions.

Project gallery:
Portfolio example for Payemoji by Sergi, Senior Software Engineer
Portfolio example for Payemoji by Sergi, Senior Software Engineer
Responsibilities:
  • Designed and implemented backend features for a multi channel conversational system.
  • Designed and deployed a service that allowed customers to create AI agents with custom RAG to answer their customers using Azure Foundry and Azure AI Search.
  • Developed customer-facing frontend features for the core web application.
  • Managed and scaled cloud infrastructure.
Project Tech stack:
Golang
PostgreSQL
RabbitMQ
Redis
AI agent development
RAG
Microsoft Azure
Angular
Docker
Kubernetes
Terraform
Software Engineer
Jan 2020 - Apr 20222 years 2 months
Project Overview

A last-mile delivery platform that connects businesses with eco-friendly delivery partners across European cities. The platform helps businesses coordinate and manage sustainable delivery services through a network of local partners.

Responsibilities:
  • Designed and implemented backend features for a sustainable last-mile delivery system, supporting core delivery workflows.
  • Developed customer-facing frontend features for the core web application, improving the delivery management experience.
  • Developed customer-facing frontend features for the mobile application, supporting day-to-day delivery operations.
  • Managed AWS infrastructure, ensuring reliable and scalable application environments.
Project Tech stack:
Node.js
Typescript
Golang
MongoDB
Angular
Flutter
AWS
Full Stack Software Engineer Intern
Apr 2019 - Jun 20192 months
Project Overview

A build monitoring system implemented as a Grafana plugin to track the status of long-running software builds for medical diagnostic machines. The system provides visibility into build progress and status, helping teams monitor software releases for diagnostic equipment.

Responsibilities:
  • Developed a build monitoring system as a Grafana plugin for tracking long-running software builds.
  • Implemented monitoring and visualization of build status and progress within Grafana.
  • Integrated build information into Grafana dashboards to provide clear visibility into ongoing builds.
  • Supported monitoring of software builds used in medical diagnostic machines.
Project Tech stack:
Grafana
React
C#
.NET Core
ElasticSearch
Junior Software Engineer
Oct 2017 - Nov 20181 year
Project Overview

A social network for evaluating soft skills and providing insights into team dynamics in business environments. The platform helps organizations assess interpersonal skills and better understand collaboration within teams.

Responsibilities:
  • Designed and implemented backend features for a social network focused on soft skills evaluations and team dynamics.
  • Developed customer-facing frontend features for the core mobile application using Java for Android.
  • Implemented features supporting soft skills evaluations and user interactions within the platform.
  • Integrated frontend functionality with backend services to support core application workflows.
Project Tech stack:
Golang
PostgreSQL
Java
Android

Education

2026
Business Administration
Master of Business Administration
2021
Artificial Intelligence
Master of Science

Languages

Spanish
Advanced
Catalan
Advanced
English
Advanced

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