d
diegosept

Diego S

@diegosept

Senior Backend Java Developer

Argentine
Espagnol, Anglais
Certaines informations sont présentées en anglais.
À propos de moi
I am a Senior Backend Java Developer with nearly 8 years of experience in enterprise software engineering. I specialize in building robust microservices, event-driven distributed architectures, and high-performance RESTful APIs. I focus on extreme performance optimization, resilience patterns, and scalable system design to solve complex bottlenecks.... Plus d’infos

Compétences

d
diegosept
Diego S
hors ligne • 

Voir mes services

API & Intégrations
I will integrate apis and webhooks into your nextjs supabase app
De35 $US / projetPlus de détails

Expérience professionnelle

Freelancer

Freelancer

Temps plein • 6 yrs 1 mo

Senior Java Backend Developer

Dec 2022 - Present • 3 yrs 9 mos

• Performance Optimization: Identified and resolved production bottlenecks in document processing, drastically reducing response times from 3 minutes to an average of 200–300 ms, significantly maximizing service efficiency. • High Availability & Resilience: Designed fault-tolerance mechanisms within the integration core; implemented a redundant architecture ensuring automated traffic redistribution to remaining pods during failures, and successfully scaled database connection pooling. • Design & Architecture: Built scalable backend services using Java 8 to 21 and Spring Boot 3.x, integrating in-memory caching with Caffeine to optimize data retrieval speeds. • Ecosystem Modernization & Migrations: Led multiple successful migrations of legacy APIs from older Java (1.8/11) and Spring Framework versions to modern Java 21 and Spring Boot 3.x baselines. • System Decoupling: Redesigned a monolithic integration API into a distributed, event-driven ecosystem. Isolated business logic into specialized services and decoupled communication asynchronously using Kafka and ActiveMQ to guarantee high-reliability messaging. • Application Ownership: Acted as the end-to-end lifecycle owner, driving proactive code analysis, logging reviews, and post-deployment monitoring to eliminate predictive risks and maintain clean code

Angular Frontend Developer

Jun 2021 - Dec 2022 • 1 yr 6 mos

• Frontend Development & Integration: Built new interactive and evolutionary features for corporate web applications using Angular, aligning user interfaces seamlessly with backend services. • Quality & UX: Executed complex bug fixing, conducted code reviews, and analyzed functional proposals to optimize client-side performance and overall user experience.

Team Lead / Backend Developer

Aug 2020 - Jun 2021 • 10 mos

• Operational Leadership: Coordinated technical and strategic task distribution under Agile methodologies, prioritizing business requirements based on impact and criticality. • Cross-Team Alignment: Defined development standards and collaborated closely with cross-functional leaders to ensure technical feasibility and smooth planning for distributed projects.