Open to opportunities

Malcolm Herraz

@malcolmherraz

Message

I build scalable backend systems with Java, Spring Boot, and AWS.

Bolivia

Message

What I'm looking for

I’m looking for a team where I can own backend and full-stack delivery—designing secure microservices, improving performance at scale, and leveraging AWS/Kubernetes to ship reliable products in agile environments.

I’m a Full Stack Developer and Backend Specialist with 12+ years of experience building scalable, high-performance systems. I focus on microservices architecture, cloud infrastructure, and distributed systems—turning complex requirements into robust backend services delivered end-to-end in agile environments.

In my current role at Venon Solutions, I improved microservices performance through monitoring, profiling, database optimizations, JVM tuning, and targeted refactoring. I also led security modernization by migrating to Keycloak for centralized authentication/authorization and strengthened inter-service trust by implementing mTLS communication.

Previously at Encora, I oversaw microservices design, implementation, and testing for user/organization management APIs, and delivered a telemetry pipeline using AWS serverless technology to stream mobile logs into Kafka for analysis with OpenSearch and CloudWatch. Earlier work spans full lifecycle delivery—from building fleet management and interactive real-time maps at Swissbytes to implementing POS/payment systems and pricing rules—always with an emphasis on maintainability, performance, and dependable delivery.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer (Backend)

Current

Venon Solutions

Aug 2024 - Present (1 year 10 months)

Improved payment microservices performance through monitoring, application profiling, database optimizations, JVM tuning, and code refactoring. Migrated authentication/authorization to Keycloak and strengthened service-to-service trust by implementing mTLS between microservices.

Java Spring Boot Microservices Keycloak mTLS Kafka RabbitMQ Redis MySQL AWS

Senior Software Engineer (Full Stack)

Encora

Mar 2022 - Jul 2024 (2 years 4 months)

Designed and delivered microservices backend capabilities for user and organization management, including API endpoints and data persistence. Built AWS serverless telemetry to stream mobile logs into Kafka for analysis in OpenSearch and CloudWatch, and automated support request intake into Jira via AWS Lambda.

Java Quarkus Spring Boot React Next.js Kafka AWS Lambda DynamoDB OpenSearch

Senior Software Engineer (Full Stack)

AssureSoft

Jan 2021 - Mar 2022 (1 year 2 months)

Architected and implemented a CSV export feature for scheduling data, enabling clinics to email exports using AWS services. Developed the primary clinic input interface and delivered the feature set using modern frontend tooling and robust testing practices.

React Next.js TypeScript GraphQL REST APIs AWS Lambda AWS S3 Jest Terraform

Full Stack Developer

Swissbytes

Jun 2014 - Dec 2020 (6 years 6 months)

Led end-to-end delivery and maintenance of fleet management and commercial systems, including backend services and web/mobile interfaces. Implemented routing prioritization algorithms and real-time map visualizations, and built POS functionality with payments, reporting, and pricing/discount rules.