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I am a Senior Software Engineer with 7+ years of experience building backend platforms, distributed services, and cloud-native enterprise systems across fintech, SaaS, logistics, e-commerce, healthcare, and business automation. I love turning messy legacy problems into reliable, scalable solutions and mentoring teammates along the way. Recently, I’ve focused on AI-assisted workflows, LLM integrations, and semantic search to boost operational efficiency, while owning complex backend systems and driving production performance improvements across multi-tenant environments.…I am a Senior Software Engineer with 7+ years of experience building backend platforms, distributed services, and cloud-native enterprise systems across fintech, SaaS, logistics, e-commerce, healthcare, and business automation. I love turning messy legacy problems into reliable, scalable solutions and mentoring teammates along the way. Recently, I’ve focused on AI-assisted workflows, LLM integrations, and semantic search to boost operational efficiency, while owning complex backend systems and driving production performance improvements across multi-tenant environments.

Dondon Herrera

Back-End Developer, Full Stack Developer, AI Engineer, +2

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I am a Senior Software Engineer with 7+ years of experience building backend platforms, distributed services, and cloud-native enterprise systems across fintech, SaaS, logistics, e-commerce, healthcare, and business automation. I love turning messy legacy problems into reliable, scalable solutions and mentoring teammates along the way. Recently, I’ve focused on AI-assisted workflows, LLM integrations, and semantic search to boost operational efficiency, while owning complex backend systems and driving production performance improvements across multi-tenant environments.…I am a Senior Software Engineer with 7+ years of experience building backend platforms, distributed services, and cloud-native enterprise systems across fintech, SaaS, logistics, e-commerce, healthcare, and business automation. I love turning messy legacy problems into reliable, scalable solutions and mentoring teammates along the way. Recently, I’ve focused on AI-assisted workflows, LLM integrations, and semantic search to boost operational efficiency, while owning complex backend systems and driving production performance improvements across multi-tenant environments.

Available to hire

I am a Senior Software Engineer with 7+ years of experience building backend platforms, distributed services, and cloud-native enterprise systems across fintech, SaaS, logistics, e-commerce, healthcare, and business automation. I love turning messy legacy problems into reliable, scalable solutions and mentoring teammates along the way.

Recently, I’ve focused on AI-assisted workflows, LLM integrations, and semantic search to boost operational efficiency, while owning complex backend systems and driving production performance improvements across multi-tenant environments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer at Offshore Team

April 1, 2023 - July 1, 2024

Designed backend services for a multi-tenant CRM and operational workflow platform, replacing spreadsheet-heavy lead tracking with structured intake, assignment, status management, RBAC permissions, and reporting workflows. Built AI-assisted workflow automation services using LLM APIs, prompt orchestration, semantic retrieval, and backend document-processing pipelines, helping internal teams summarize operational records, generate reports, and reduce repetitive manual analysis. Modernized legacy admin, reporting, and automation modules into containerized services. Strengthened production security and reliability with OAuth 2, JWT, RBAC, secure configuration handling, audit logs, distributed tracing, metrics dashboards, and incident-level debugging visibility.

Backend Engineer at Kobiat-ITO

October 1, 2020 - April 1, 2023

Engineered backend services for fintech, wallet, payments, e-commerce, and information-management platforms, supporting account workflows, transaction processing, payment callbacks, vendor integrations, and operational reporting. Developed wallet and payment-processing APIs using Java/Spring Boot, .NET Core, Node.js, PostgreSQL, Redis, Kafka, Docker, and Kubernetes, improving transaction reliability under concurrent user activity and reducing payment retry issues. Refactored high-traffic CRM search, reporting, and workflow APIs by optimizing PostgreSQL query plans, caching frequently accessed data, and moving long-running tasks into background workers, improving average response time by ~40%. Implemented Kafka-based event flows for lead status changes, notification retries, reporting generation, and failed-message recovery using idempotent consumers, retry policies, dead-letter queues, and structured monitoring. Strengthened production security and RBAC, OAuth2/JWT, and observability.

Backend Engineer at Emerio

June 1, 2019 - September 1, 2020

Engineered backend services for fintech, e-wallet, payments, e-commerce, and information-management platforms, supporting account workflows, transaction processing, payment callbacks, vendor integrations, and operational reporting. Delivered backend APIs and server-side modules using Java, .NET, Node.js, PostgreSQL, Redis, and RESTful services, enabling scalable fintech workflows and secure data exchange for enterprise customers. Implemented authentication, session handling, and input validation, along with secure API communication and API governance. Refactored legacy APIs and reporting pipelines to improve performance and reliability.

Back End Developer at YEAPS

November 1, 2018 - June 1, 2019

Delivered backend APIs and server-side modules for sales-enabled SaaS platforms aligned with YEAPS’ focus on connected sales, marketing, and modern work. Built Node.js, Express.js, MySQL, MongoDB, and REST APIs for lead tracking, sales activity reporting, user management, and third-party integration workflows. Implemented authentication, session handling, input validation, and secure API communication. Created reusable backend utilities for reporting, customer records, integration handling, and internal platform modules. Refactored legacy queries and batch-processing workflows to improve performance for reporting and synchronization, and supported production troubleshooting and release stabilization for enterprise apps.