Open to opportunities

Daniel Douglas Everling

@daniel_everling

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Senior Backend Engineer | Java, Kotlin, TypeScript, Node.js | Distributed Systems, APIs & Integrations | Remote LATAM

Brazil

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What I'm looking for

I’m looking to build and modernize backend platforms for FinTech/SaaS, own architecture decisions end-to-end, and deliver reliable APIs and workflows while mentoring teams and improving maintainability, testability, and system boundaries.

Senior Backend Engineer with 10+ years of experience building scalable backend systems, APIs, integrations, and business-critical applications.

I specialize in Java, Kotlin, TypeScript, Node.js, PostgreSQL, and distributed systems. My experience includes designing backend services, integrating with external systems, working with background jobs, event-driven architectures, and building reliable systems with strong attention to idempotency, failure handling, testing, and maintainability.

I follow a software craftsmanship mindset, applying practices such as TDD, SOLID principles, Domain-Driven Design, Clean Architecture, and integration testing to build systems that are easy to evolve and maintain.
I care about deeply understanding business domains and product goals before proposing technical solutions. I believe good architecture emerges from close collaboration between engineering, product, and business — not from unnecessary over-engineering.

I enjoy collaborative engineering environments and actively promote practices such as pair programming, technical discussions, code reviews, and knowledge sharing to improve code quality and raise the overall engineering bar of the team.

Core stack: Java, Kotlin, TypeScript, Node.js, PostgreSQL, Docker
Frameworks: Spring Boot, Quarkus, NestJS
Architecture & practices: Distributed Systems, Microservices, Event-Driven Architecture, REST APIs, Background Jobs, Idempotency, TDD, Integration Testing, DDD, Clean Architecture, SOLID

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Engineer

Current

Clutch

Nov 2021 - Present (4 years 7 months)

Built and evolved backend services for Credit Union financial platforms, modernizing legacy systems and third-party workflows to deliver reliable APIs and maintainable system boundaries. Provided technical ownership through architecture discussions, delivery planning, and code reviews.

Backend Engineering Financial Platforms Credit Union Domain REST APIs Platform Modernization System Reliability Technical Leadership Technical Planning Code Review

Professor / Technology Instructor

Fundatec

Mar 2017 - Feb 2022 (4 years 11 months)

Taught software development and programming fundamentals and mentored students on problem solving, software design, and professional development practices. Helped connect academic learning to practical real-world engineering workflows.

Programming Instruction Mentorship Problem Solving Software Design Professional Development Student Coaching

Technology Instructor

Fundatec

Mar 2017 - Feb 2022 (4 years 11 months)

Taught software development and programming fundamentals and mentored students on problem solving, software design, and professional development. Connected academic learning with real-world software engineering practices to prepare students for the technology market.

Software Development Instruction Mentoring Problem Solving Software Design Professional Development

Software Developer

uMov.me

Sep 2020 - Nov 2021 (1 year 2 months)

Developed and maintained backend features for a SaaS platform for business process automation and enterprise mobility. Implemented system and API integrations to support automation workflows and collaborated with product and engineering teams to deliver improvements.

Backend Development SaaS Platforms Business Process Automation API Integration Enterprise Mobility System Integration Workflows Cross Functional Collaboration

Tech Lead

Creditas

Jan 2020 - Sep 2020 (8 months)

Served as Tech Lead in a FinTech environment, leading backend technical initiatives for financial products and supporting engineering execution. Improved engineering quality through technical guidance, code review, problem solving, and participation in architecture decisions and delivery planning.

Technical Leadership Code Review Engineering Quality

Java Backend Developer / Tech Lead

Zenvia Mobile

Aug 2017 - Dec 2019 (2 years 4 months)

Developed and maintained high-volume backend services for messaging and communication platforms, focusing on reliability and operational awareness. Served as a technical reference for backend improvements, supporting system evolution through testing and integration practices.

Java Spring Boot PostgreSQL Kafka Docker TDD Pair Programming Integration Testing

Java Backend Developer

Zenvia Mobile

Aug 2017 - Dec 2019 (2 years 4 months)

Developed and maintained backend services for high-volume communication and messaging products, focusing on reliability and continuous system evolution. Acted as a technical reference for backend development while working with Spring Boot and Kafka using TDD and integration testing practices.

Java Spring Boot Kafka PostgreSQL Docker TDD Integration Testing Pair Programming Messaging Systems Reliability Engineering

Founder / Product Engineer

Gest Food

Created Gest Food, a SaaS that turns Brazilian NF-e invoice data into structured product and cost intelligence using automation and AI-assisted, auditable workflows. Designed multi-tenant architecture and built cost-calculation workflows, real-time operational notifications, and CI/CD-backed testing to support reliable product evolution.

Kotlin Java Quarkus PostgreSQL Keycloak OpenAI API CI CD