Open to opportunities

Delvin Fresh

@delvinfresh

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Backend engineer and technical lead building scalable microservices and cloud-native systems.

Indonesia

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What I'm looking for

I seek a role where I can lead backend architecture and engineering, drive scalable microservices, mentor teams, and deliver reliable cloud-native solutions with strong collaboration and growth opportunities.

I am a Backend Engineer and Technical Lead with five years of experience building scalable monolithic and microservice systems across fintech, ERP, and SaaS domains.

I have hands-on expertise in Spring Boot, Node.js, Golang, Python, databases, Kafka, Docker, and CI/CD, and I have improved API response times, reduced deployment errors, and raised code coverage in multiple roles.

As a team lead, I defined system architecture and technical roadmaps, mentored engineers, introduced CI/CD pipelines, and led initiatives that cut release cycles and incident resolution time significantly.

I deliver end-to-end solutions—designing APIs, optimizing databases, implementing event-driven systems, and collaborating with product and design teams—to produce reliable, high-performance systems that align with business goals.

Experience

Work history, roles, and key accomplishments

Current

Technical Lead

Current

Rolling Glory

Aug 2022 - Present (3 years 10 months)

Led a team of 6 engineers to deliver scalable microservices, introduced CI/CD pipelines that reduced deployment errors and release cycles by 70%, and optimized APIs with Redis and query tuning to improve response times by 30%.

Microservices Spring Boot Docker Gitlab CI Redis PostgreSQL Kafka API Performance Mentorship

Full Stack Developer

Energee.id

Apr 2025 - Jun 2025 (2 months)

Built a responsive landing page and CMS dashboard with Golang backend and Vue.js frontend, implemented role-based admin authentication, and reduced page load time by 40% through code-splitting and caching.

Golang Vue.Js Authentication CMS Performance Tuning

Backend Engineer

Walden Global Solution

May 2023 - Mar 2025 (1 year 10 months)

Designed and deployed services in monolithic and microservice architectures, integrated payment and account APIs, optimized SQL schemas to reduce processing time by 35%, and implemented Kafka for event-driven scalability.

Spring Boot Golang SQL Optimization Kafka Docker CI CD API Integration Automated Testing

Backend Engineer

Pohon Dana

Aug 2023 - Feb 2025 (1 year 6 months)

Designed loan microservices with Spring Boot covering lifecycle from creation to repayment, integrated credit scoring and disbursement APIs, and used Kafka to reduce approval latency by 25%.

Spring Boot Microservices Kafka Docker API Integration Monitoring Grafana Loan Systems

Full Stack Developer

Election Management System (West Java Regional)

Jun 2023 - Feb 2024 (8 months)

Developed a web-based election management system with Golang and PostgreSQL for real-time vote aggregation, built a Vue.js admin dashboard, and implemented secure AWS S3 file upload and RBAC for auditability.

Golang PostgreSQL Vue.Js AWS S3 RBAC Real Time Aggregation Security

Full Stack Developer

Petro1

May 2022 - Oct 2023 (1 year 5 months)

Built an ERP system with Spring Boot and Angular covering HR, finance, and inventory, designed PostgreSQL schemas, implemented RBAC, and reduced report generation time from 15s to under 5s.

Spring Boot Angular PostgreSQL RBAC ERP Performance Optimization Database Design

Frontend Engineer

Walden Global Solution

Aug 2021 - Apr 2023 (1 year 8 months)

Developed responsive web applications with Angular, created reusable UI components and state management that improved developer efficiency by 25%, and optimized UI performance via lazy-loading and asset optimization.

Angular Frontend Development UI Components Performance Optimization State Management API Integration Responsive Design

Associate Technical Lead

Rolling Glory

Sep 2021 - Aug 2022 (11 months)

Assisted system design and led migration from monolith to microservices, established testing standards to raise code coverage to 80%, and reduced incident resolution time by 40% via observability improvements.

Microservices System Design Testing CI CD Observability NestJS SQL Optimization Team Leadership

Backend Engineer

Rolling Glory

Jul 2020 - Sep 2021 (1 year 2 months)

Built and maintained backend services using Nest.js, designed RESTful APIs for high-volume transactions, integrated third-party services, and improved reliability to reduce production downtime by 25%.

NestJS REST APIs Error Handling Logging SQL Backend Engineering

Full Stack Developer

BRAUST Consultant

Aug 2019 - Jul 2020 (11 months)

Developed ERP modules (finance, HR, inventory) using Spring Boot and Angular, implemented JWT-based authentication and RBAC, and optimized database queries for reporting.

Spring Boot Angular PostgreSQL JWT RBAC REST APIs Database Design ERP