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Hi, I'm Hakim Balestrieri. I'm a Senior Software Architect specializing in Java and cloud ecosystems, with 8+ years building high-availability systems. I focus on the Java/Spring stack, microservices, and event-driven architectures, delivering robust solutions in energy, fintech, and logistics, while obsessing about code quality and CI/CD excellence. In my recent roles, I've designed and shipped backend services, containerized microservices with Docker and Kubernetes on AWS, and built high-performance data pipelines. I enjoy collaborating with cross-functional teams, applying Clean Code, SOLID principles, and TDD, and mentoring teammates to raise the bar on reliability and developer happiness.…Hi, I'm Hakim Balestrieri. I'm a Senior Software Architect specializing in Java and cloud ecosystems, with 8+ years building high-availability systems. I focus on the Java/Spring stack, microservices, and event-driven architectures, delivering robust solutions in energy, fintech, and logistics, while obsessing about code quality and CI/CD excellence. In my recent roles, I've designed and shipped backend services, containerized microservices with Docker and Kubernetes on AWS, and built high-performance data pipelines. I enjoy collaborating with cross-functional teams, applying Clean Code, SOLID principles, and TDD, and mentoring teammates to raise the bar on reliability and developer happiness.

Hakim Balestrieri

Full Stack Developer, Back-End Developer, Front-End Developer, +4

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Hi, I'm Hakim Balestrieri. I'm a Senior Software Architect specializing in Java and cloud ecosystems, with 8+ years building high-availability systems. I focus on the Java/Spring stack, microservices, and event-driven architectures, delivering robust solutions in energy, fintech, and logistics, while obsessing about code quality and CI/CD excellence. In my recent roles, I've designed and shipped backend services, containerized microservices with Docker and Kubernetes on AWS, and built high-performance data pipelines. I enjoy collaborating with cross-functional teams, applying Clean Code, SOLID principles, and TDD, and mentoring teammates to raise the bar on reliability and developer happiness.…Hi, I'm Hakim Balestrieri. I'm a Senior Software Architect specializing in Java and cloud ecosystems, with 8+ years building high-availability systems. I focus on the Java/Spring stack, microservices, and event-driven architectures, delivering robust solutions in energy, fintech, and logistics, while obsessing about code quality and CI/CD excellence. In my recent roles, I've designed and shipped backend services, containerized microservices with Docker and Kubernetes on AWS, and built high-performance data pipelines. I enjoy collaborating with cross-functional teams, applying Clean Code, SOLID principles, and TDD, and mentoring teammates to raise the bar on reliability and developer happiness.

Available to hire

Hi, I’m Hakim Balestrieri. I’m a Senior Software Architect specializing in Java and cloud ecosystems, with 8+ years building high-availability systems. I focus on the Java/Spring stack, microservices, and event-driven architectures, delivering robust solutions in energy, fintech, and logistics, while obsessing about code quality and CI/CD excellence.

In my recent roles, I’ve designed and shipped backend services, containerized microservices with Docker and Kubernetes on AWS, and built high-performance data pipelines. I enjoy collaborating with cross-functional teams, applying Clean Code, SOLID principles, and TDD, and mentoring teammates to raise the bar on reliability and developer happiness.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

French

Fluent

English

Advanced

German

Intermediate

Work Experience

Freelance Software Engineer at Remote / Geneva

January 1, 2025 - Present

World-leading code quality tools vendor. Contributed to the development and optimization of code analysis and quality tools used by international engineering teams. Designed and improved CI/CD pipelines to automate delivery and increase release reliability. Strengthened automated testing coverage (JUnit, MockIt) and monitored code quality metrics (coverage, duplication, maintainability). Participated in code reviews and applied best practices (Clean Code, SOLID, TDD). Supported DevOps tasks (CI/CD pipelines, Dockerized builds, test automation).

Freelance Software Engineer at Brighton, England

December 1, 2024 - September 24, 2025

Designed and deployed Java & Spring microservices for real-time data processing. Built automation tools in Python and Bash for reporting and monitoring. Assisted teams in CI/CD pipeline setup (Jenkins, GitHub Actions, Docker, Kubernetes).

Backend Developer at ALPIQ Lausanne, VD

September 1, 2023 - September 24, 2025

Designed and developed Java-based microservices using Spring Boot and Kafka, reducing API response times by 20% and system latency by 40%. Built a high-performance energy price retrieval system integrating REST APIs and SQL databases (PostgreSQL, Oracle, MS SQL Server) with sub-500 ms response times. Deployed and monitored containerized applications using Docker and Kubernetes on AWS (EC2, S3), improving scalability and reducing deployment failures by 35%. Optimized CI/CD pipelines using Jenkins and Git, improving deployment reliability and increasing system uptime to 85%. Monitored backend systems with Grafana, proactively identifying and resolving issues before impacting production. Containerized legacy Java applications, reducing deployment time by 50% and enhancing resource efficiency. Collaborated with Agile teams, actively participating in code reviews and enforcing adherence to clean code and quality standards.

Backend Developer at Travizory Border Security, Neuchâtel, NE

February 1, 2022 - September 24, 2025

Developed high-performance Java backend components with Spring Boot, improving system scalability and reliability for border security applications. Implemented containerized microservices using Docker and Kubernetes, streamlining CI/CD workflows with Jenkins and Git. Optimized large-scale SQL databases (PostgreSQL, MongoDB, MS SQL Server), enhancing data integrity and query performance. Used Kafka for event-driven architectures, improving system resilience and fault tolerance. Engaged with stakeholders to align technical solutions with business needs, fostering effective collaboration.

Full Stack Developer at NetManage SAB eva ix, NE

May 1, 2020 - September 24, 2025

Developed and maintained web applications using Java, Spring Boot, and SQL, ensuring robust data integrity and query efficiency. Coordinated project deadlines and managed customer relationships, delivering solutions aligned with client requirements. Version-controlled projects using Git and participated in code reviews to maintain high-quality code standards. Trained junior developers, enhancing team productivity and fostering knowledge sharing.

IT Specialist at Swiss Post Neuchâtel & Zollikon

November 1, 2017 - September 24, 2025

Designed Java/Angular software solutions enabling routing of newspapers across Switzerland as well as tracking of parcel deliveries. Used critical design software to assist in realizing projects. Implemented and updated application modules under the guidance of senior software developers.

Freelance Software Engineer at Remote – Geneva

January 1, 2025 - Present

Contributed to the development and optimization of code analysis and quality tools used by international engineering teams. Designed and improved CI/CD pipelines to automate delivery and increase release reliability. Strengthened automated testing coverage (JUnit, Mockito) and monitored code quality metrics (coverage, duplication, maintainability). Participated in code reviews and applied best practices (Clean Code, SOLID, TDD). Supported DevOps tasks (CI/CD pipelines, Dockerized builds, test automation).

Senior Software Engineer at Brighton, England

December 31, 2024 - September 24, 2025

Lead in code quality initiatives for a world‑leading code quality vendor. Designed and deployed Java & Spring microservices for real-time data processing. Built automation tools in Python and Bash for reporting and monitoring. Assisted teams in CI/CD pipeline setup (Jenkins, GitHub Actions, Docker, Kubernetes).

Backend Developer at ALPIQ Lausanne

September 30, 2023 - September 24, 2025

Designed and developed Java-based microservices using Spring Boot and Kafka, reducing API response times by 20% and system latency by 40%.

Backend Developer at Travizory Border Security

February 28, 2022 - September 24, 2025

Developed high-performance Java backend components with Spring Boot, improving system scalability and reliability for border security applications.

Full Stack Developer at NETmanage SA

May 31, 2020 - September 24, 2025

Developed and maintained web applications using Java, Spring and SQL, ensuring robust data integrity and query efficiency.

IT Specialist at Swiss Post Neuchâtel & Zollikofen

November 30, 2017 - September 24, 2025

Design of Java/Angular software solutions enabling routing of newspapers across Switzerland and tracking parcel deliveries. Implemented and updated application modules under guidance of senior software developers.

Freelance Software Engineer at Self-Employed / Freelance

January 1, 2025 - Present

Backend Developer at ALPIQ

September 1, 2022 - September 1, 2023

Designed and developed Java-based microservices using Spring Boot and Kafka, reducing API response times by 20% and system latency by 40%. Built a high-performance energy price retrieval system integrating REST APIs and SQL databases (PostgreSQL, Oracle, MS SQL Server) with sub-500 ms response times. Deployed containerized applications using Docker and Kubernetes on AWS (EC2, S3), improving scalability and reducing deployment failures by 35%. Optimized CI/CD pipelines using Jenkins and Git, improving deployment reliability and system uptime to 85%. Monitored back-end systems with Grafana, proactively identifying and resolving issues before production impact. Containerized legacy Java applications, reducing deployment time by 50% and improving resource efficiency. Collaborated with Agile teams, actively participating in code reviews and enforcing clean code and quality standards.

Backend Developer at Travizory Border Security

May 1, 2020 - February 1, 2022

Developed high-performance Java backend components with Spring Boot, improving system scalability and reliability for border security applications. Implemented containerized microservices using Docker and Kubernetes, streamlining CI/CD workflows with Jenkins and Git. Optimized large-scale SQL databases (PostgreSQL, MongoDB, MS SQL Server), enhancing data integrity and query performance. Utilized Kafka for event-driven architectures, improving system responsiveness and fault tolerance. Engaged with stakeholders to align technical solutions with business needs, fostering effective collaboration. Applied Agile practices to deliver iterative improvements.

Full Stack Developer at NETmanage SA

July 1, 2018 - May 1, 2020

Developed and maintained web applications using Java, Spring Boot, and SQL, ensuring robust data integrity and query efficiency. Coordinated project deadlines and managed client relationships, delivering solutions aligned with client requirements. Version-controlled projects using Git and participated in code reviews to maintain high-quality code standards. Trained junior developers to improve team productivity and knowledge sharing.

IT Specialist at Swiss Post Neuchâtel & Zollikon

March 1, 2014 - November 1, 2017

Design of Java/Angular software solutions enabling routing of newspapers across Switzerland as well as tracking of parcel deliveries. Utilized critical design software to assist in project realization. Implemented and updated application modules under the guidance of senior software developers.

Software Engineer at World leading code quality vendor

October 1, 2023 - Present

Contributed to the development and optimization of code analysis and quality tools used by international engineering teams. Designed and improved CI/CD pipelines to automate delivery and increase release reliability. Strengthened automated testing coverage (JUnit, Mockito) and monitored code quality metrics (coverage, duplication, maintainability). Participated in code reviews and applied best practices (Clean Code, SOLID, TDD). Supported DevOps tasks including Dockerized builds and test automation within CI/CD pipelines.

Software Engineer at Alpiq

September 1, 2022 - September 1, 2023

Designed and developed Java-based microservices using Spring Boot and Kafka, reducing API response times by 20% and system latency by 40%. Built a high-performance energy price retrieval system integrating REST APIs and SQL databases (PostgreSQL, Oracle, MS SQL Server) with sub-500 ms response times. Deployed and monitored containerized applications using Docker and Kubernetes on AWS (EC2, S3), improving scalability and reducing deployment failures by 35%. Optimized CI/CD pipelines using Jenkins and Git, improving deployment reliability and increasing system uptime. Monitored backend systems with Grafana, proactively identifying and resolving issues before impacting production. Containerized legacy Java applications, reducing deployment time by 50% and enhancing resource efficiency. Collaborated within Agile teams, actively participating in code reviews and ensuring adherence to clean code and quality standards.

Software Engineer at Travizory Border Security

May 1, 2020 - July 1, 2022

Developed high-performance Java backend components with Spring Boot, improving system scalability and reliability for border security applications. Implemented containerized microservices using Docker and Kubernetes, streamlining CI/CD workflows with Jenkins and Git. Optimized large-scale SQL and NoSQL databases (PostgreSQL, MongoDB, MS SQL Server), enhancing data integrity and query performance. Utilized Kafka for event-driven architectures, improving system responsiveness and fault tolerance. Engaged with stakeholders to align technical solutions with business needs, fostering effective collaboration.

IT Specialist at La Poste Suisse

March 1, 2014 - November 1, 2017

Designed Java / Angular software solutions for national newspaper routing and real-time tracking of parcel deliveries across Switzerland. Utilized critical design software skills and patterns to assist in the high-quality realization of large-scale logistics projects. Implemented and updated core application modules under the guidance of senior software developers, ensuring system stability.