Impact overview
Backend systems and distributed data platforms.
Explore my Resume below to learn more about what I've built, the problems I worked on, and the technologies I used.
8
years in software development
1M BRL
payroll loans issued after one year
Thousands
customers supported across countries
Millions
potential target devices
On this page
I have 8 years of experience in software development across diverse companies and projects, most of them as the lead engineer. My core strengths include distributed systems, backend architecture, data engineering, cloud services and Web development. I've worked on system integration and optimization, data pipelines, dashboards and data analysis, infrastructure monitoring, marketing and customer prospecting, AI initiatives and more. These days, I'm exploring AI engineering, especially for the physical domain, with a particular interest in designing backend services and data pipelines that make intelligent applications reliable, scalable, and capable of operating in both batch and real-time environments.
Key technologies
Python · FastAPI · SQL · JavaScript · TypeScript · React · Svelte · WebSockets · AWS · GCP · Apache Spark · Apache Airflow · Prefect · Databricks · Apache Kafka · Kubernetes · Terraform · PostgreSQL · Docker
Senior Backend EngineerHelloFresh SE12/2021 - 11/2024 · Denmark / Germany
Senior Backend Engineer
07/2023 - 11/2024 · Denmark (remote)
- Designed, developed and maintained a microservice integrating with the company's Customer Data Platform (CDP) to support personalized web experiences for thousands of HelloFresh customers across countries.
- Designed and developed data pipelines and microservices to supply data to machine learning models used in marketing campaigns and ad spend optimization across multiple advertising platforms and channels such as Google Ads and Meta.
- Designed and developed data pipelines to extract marketing campaign data from the ad platforms and store it into the company's data lake, providing a valuable resource for campaign efficiency tracking and experimentation.
- Worked remotely from Copenhagen for my previous team in Berlin.
Technologies: Prefect, Databricks, Google Ads APIs, Meta Marketing APIs, plus the full technology stack used in the previous Backend Engineer role.
Backend Engineer
12/2021 - 07/2023 · Germany (hybrid)
- Developed real-time and batch data pipelines to ingest customer data into the HelloFresh Customer Data Platform (CDP).
- Processed the HelloFresh CDP data to create a unified customer profile across the organization used by most of the marketing teams.
- Enabled key business use cases, including cost-effective targeted marketing campaigns and personalized customer experiences.
Technologies: Apache Spark, Apache Airflow, Apache Kafka, RabbitMQ, Kubernetes, AWS (EMR, S3, Glue, ElastiCache, RDS, EKS, IAM), Terraform, Python/FastAPI, Redis, Postgres, Prometheus, Grafana, GitHub Actions.
Senior Software DeveloperSiDi03/2021 - 10/2021 · Brazil (remote)
- Developed cloud services for cryptography and machine learning model deployment as part of the Samsung Knox ML Model Protection platform, potentially targeting millions of Samsung devices.
- Designed, planned, and coordinated the development of an internal platform to test previous and new cloud services within the Samsung Knox ML platform. It served as a trial system for existing and new customers before they decided to commit to the platform.
- Interacted remotely with the Samsung Knox team in South Korea.
Technologies: Java/Spring, MongoDB, AWS (S3, EC2), TypeScript, Next.js, mTLS.
Full Stack DeveloperCrédito Express10/2019 - 03/2021 · Brazil (remote)
- Developed a white-label payroll loan software from inception to production for the fintech startup Crédito Express. After one year, it had issued 1 million BRL in payroll loans.
- Joined as one of the major lead developers, contributing to the platform's architecture and foundation.
Technologies: Python/Flask with Pytest, JavaScript/React with Cypress, GCP (Cloud Run, Pub/Sub, Secrets Manager, IAM, Dataflow, Cloud Functions, Cloud Storage, Firebase), AWS (SNS, SQS, SES), GitLab CI/CD, Terraform, Sentry.
Full Stack DeveloperAlgar Tech10/2018 - 05/2019 · Brazil (on-site)
- Developed a generic SaaS digital billing application for the Algar group and its clients.
- Designed and developed an infrastructure monitoring system for remote servers, tracking CPU and memory usage plus network and disk activity.
Technologies: Python with AWS (Lambda, DynamoDB, SNS, RDS, CloudFormation, S3) and the Serverless Framework.
Full Stack DeveloperProjetas Negócios & Serviços01/2018 - 09/2018 · Brazil (on-site)
- Contributed to software projects across different domains, including customer prospecting software for Bradesco and Tribanco, online marketplace data analysis tools for Grupo Martins, and digital billing software for Callink.
- Gained broad experience working with diverse clients and business needs.
Technologies: Java/Spring, TypeScript/Angular 2+, OracleDB, MySQL, RabbitMQ, Docker, Jenkins, JHipster.
08/2009 - 07/2017
Universidade Federal de Uberlândia
Brazil
Bachelor of Science, Mechatronics Engineering
02/2013 - 02/2014
Leibniz Universität Hannover
Germany
Student Exchange Program in Electrical Engineering and Computer Science
Proficient:
Backend & APIs
Frontend & Web
Data Engineering
Systems & Infrastructure
AWS
GCP
Databases & Caching
AI-Assisted Development
Engineering Practices & Quality
Architecture & Design
Intermediate:
Messaging & Observability
Systems & Infrastructure
AWS
GCP
Beginner:
Robotics & Native Development
Portuguese
Native (mother tongue)
English
Full Professional Working Proficiency (self-taught)
German
Intermediate (DSH-2 certificate - Date: 03/2014)
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Glênio Silva Pimentel
Senior Software Engineer
Summary
I am a Senior Software Engineer with 8 years of experience building distributed systems, backend services, data platforms, cloud services, and web applications. I have led system integrations, real-time and batch data pipelines, and production software across fintech, marketing, and customer platforms. My work includes a payroll lending platform that issued 1 million BRL in payroll loans, personalized experiences for thousands of customers, and cloud services with potential reach across millions of devices. I focus on reliable backend architecture, data engineering, and systems that scale.
Skills
Proficient:
Backend & APIs: Python, Node.js, FastAPI, Flask, RESTful APIs
Frontend & Web: JavaScript, TypeScript, React, Next.js, Svelte, SvelteKit.js, HTML5, CSS3
Data Engineering: SQL, Apache Spark, Apache Airflow, Prefect, Databricks, Pandas
Systems & Infrastructure: AWS (S3, EC2, IAM, ElastiCache, RDS), GCP (Cloud Run, Pub/Sub, Secrets Manager, IAM, Cloud Functions, Cloud Storage), Git, Docker, Terraform, GitHub Actions, Linux
Databases & Caching: PostgreSQL, MySQL, MongoDB, Redis
AI-Assisted Development: Agentic tools, GitHub Copilot, VS Code, Zed, PyCharm, Opencode
Engineering Practices & Quality: Agile, Scrum, Kanban, CI/CD, PyTest, Jest, Vitest, TDD
Architecture & Design: Microservices, Distributed systems, SOLID, Design Patterns, Event-driven Architecture
Intermediate:
Messaging & Observability: Apache Kafka, WebSockets, RabbitMQ, Prometheus, Grafana, Sentry
Systems & Infrastructure: Kubernetes, DevOps, GitLab CI/CD, AWS (EMR, Glue, EKS, SNS, SQS, SES, Lambda, DynamoDB), GCP (Dataflow, Firebase)
Beginner:
Robotics & Native Development: ROS 2, C++
Experience
Senior Backend Engineer
HelloFresh SE | 07/2023 - 11/2024 | Denmark | remote
- Built a Customer Data Platform integration supporting personalized web experiences for thousands of customers across countries.
- Built marketing data pipelines and microservices feeding machine learning models and the data lake for ad spend optimization and experimentation.
Technologies: Prefect, Databricks, Google Ads APIs, Meta Marketing APIs, plus the full technology stack used in the previous Backend Engineer role.
Backend Engineer
HelloFresh SE | 12/2021 - 07/2023 | Germany | hybrid
- Developed real-time and batch pipelines for customer data ingestion and a unified customer profile used by most marketing teams.
- Enabled cost-effective targeted campaigns and personalized customer experiences.
Technologies: Apache Spark, Apache Airflow, Apache Kafka, RabbitMQ, Kubernetes, AWS (EMR, S3, Glue, ElastiCache, RDS, EKS, IAM), Terraform, Python/FastAPI, Redis, Postgres, Prometheus, Grafana, GitHub Actions.
Senior Software Developer
SiDi | 03/2021 - 10/2021 | Brazil | remote
- Developed cloud services for cryptography and machine learning model deployment in the Samsung Knox ML Model Protection platform, potentially targeting millions of devices.
- Designed and coordinated an internal trial platform for Samsung Knox ML cloud services and worked remotely with the South Korea team.
Technologies: Java/Spring, MongoDB, AWS (S3, EC2), TypeScript, Next.js, mTLS.
Full Stack Developer
Crédito Express | 10/2019 - 03/2021 | Brazil | remote
- Built a white-label payroll loan platform from inception to production; it issued 1 million BRL in payroll loans after one year.
- Contributed as a lead developer to the platform's architecture and foundation.
Technologies: Python/Flask with Pytest, JavaScript/React with Cypress, GCP (Cloud Run, Pub/Sub, Secrets Manager, IAM, Dataflow, Cloud Functions, Cloud Storage, Firebase), AWS (SNS, SQS, SES), GitLab CI/CD, Terraform, Sentry.
Full Stack Developer
Algar Tech | 10/2018 - 05/2019 | Brazil | on-site
- Developed a SaaS digital billing application and an infrastructure monitoring system for remote servers.
Technologies: Python with AWS (Lambda, DynamoDB, SNS, RDS, CloudFormation, S3) and the Serverless Framework.
Full Stack Developer
Projetas Negócios & Serviços | 01/2018 - 09/2018 | Brazil | on-site
- Delivered customer prospecting, marketplace data analysis, and digital billing software for banks and companies including Bradesco, Tribanco, Grupo Martins, and Callink.
- Worked across varied clients, domains, and business needs.
Technologies: Java/Spring, TypeScript/Angular 2+, OracleDB, MySQL, RabbitMQ, Docker, Jenkins, JHipster.
Education
Bachelor of Science, Mechatronics Engineering
Universidade Federal de Uberlândia, Brazil | 08/2009 - 07/2017
Student Exchange Program in Electrical Engineering and Computer Science
Leibniz Universität Hannover, Germany | 02/2013 - 02/2014
Languages
Portuguese Native (mother tongue) · English Full Professional Working Proficiency (self-taught) · German Intermediate (DSH-2 certificate - Date: 03/2014)