Open to opportunities

Diego Mendoza

@diegomendoza

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Senior software engineer building scalable backend systems and cloud-native applications.

Canada

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What I'm looking for

I seek roles where I can design resilient, compliant backend and cloud-native systems, mentor teams, and deliver measurable business impact in fintech or SaaS.

I am a senior software engineer with 15+ years designing and building scalable backend systems, distributed architectures, and cloud-native applications across fintech, SaaS, and high-growth platforms. I have hands-on expertise in Ruby, Java, TypeScript, Python, and PHP and have delivered secure REST APIs, microservices, and asynchronous messaging systems using Kafka, RabbitMQ, Sidekiq, and Delayed Job.

I consistently drive measurable impact: led REST API delivery for a global mobile app, increased affiliate conversions and subscriptions, improved team efficiency and incident reduction through coding standards and observability, and launched high-impact payments and card products for hundreds of thousands of users. I prioritize resilience, compliance, and developer productivity across AWS, GCP, and Azure.

Experience

Work history, roles, and key accomplishments

Software Engineer

Envato

Jul 2022 - Aug 2025 (3 years 1 month)

Led development of secure REST APIs for Envato's mobile app, supporting millions of designers and increasing affiliate-driven subscriptions (affiliate conversions +10%, subscriptions +5%). Implemented GDPR cookie compliance and search endpoints integrating affiliate snippets.

Ruby on Rails MySQL JWT ReactJS Redis REST APIs GDPR Compliance Search

Software Engineer

Payclip

Feb 2021 - Nov 2022 (1 year 9 months)

Defined coding standards and infrastructure-as-code, added observability to reduce incidents 50% and increased team efficiency 35%; delivered OTP and accounts/cards microservices to support a debit card product and scaled platform growth.

AWS API Gateway RabbitMQ DynamoDB Spring Boot Observability Infrastructure as Code

Software Engineer

Bitso

Nov 2021 - Jun 2022 (7 months)

Designed and implemented a multi-wallet microservice for crypto accounts using Spring Boot, gRPC and Protobuf, improving isolation of user assets and service resilience with circuit breaker patterns.

Java Spring Boot gRPC Protobuf PostgreSQL Microservices Resilience Distributed Systems

Senior Fullstack Engineer

Formas Digitales

Sep 2018 - Feb 2020 (1 year 5 months)

Migrated ~1M-record database to Aurora MySQL, refactored a monolith into layered Java EE services improving separation of concerns by ~75% and reduced deployment time 25% via deployment scripting.

Java EE AWS Tomcat JDBC Performance Optimization

Senior Fullstack Engineer

Pixcomp Studio

Jun 2014 - Sep 2018 (4 years 3 months)

Improved API response times 20% and reduced session drop-outs 15% via caching, query optimization and auth improvements; designed Rails APIs and rebuilt commissions engine reducing manual interventions by ~90%.

Ruby on Rails MySQL Redis JWT API Design Performance Tuning AngularJS Fullstack Development