Darius Mejeras

Senior Software Engineer | Cloud Platform & Infrastructure

image

Senior Software Engineer with a decade of experience building backend systems, cloud infrastructure, and platform software. Strong background in Go, Kubernetes, container runtimes, distributed systems, and multi-cloud environments spanning AWS, GCP, and Azure. Most comfortable in roles that combine software engineering with infrastructure, reliability, and operational simplification.


Work Experience

Software Engineer

CAST AI | June 2022 - February 2026

Built Kubernetes-focused product capabilities in areas such as storage optimization, workload migration, and security foundations for multi-cloud environments.

  • Designed and delivered platform components for Kubernetes-based infrastructure products
  • Worked deeply with container runtimes, Kubernetes internals, and low-level Linux systems
  • Built solutions that operated across Azure, AWS, and GCP environments
  • Drove engineering execution for complex, novel ideas in the Kubernetes space

Software Engineer

Nord Security | May 2020 - June 2022

Owned a critical OAuth2 gateway serving the Nord Security product suite. Combined software engineering, security, and production-minded systems design to keep a core identity component fast, reliable, and maintainable.

  • Led development of a high-scale Go service used across multiple products
  • Worked on authentication, authorization, and security architecture around OAuth2
  • Mentored engineers and helped drive technical direction for infrastructure-facing services
  • Focused on predictable operation and resilience for a business-critical platform component

Software Engineer

HomeToGo | November 2019 - May 2020

Integrated machine learning models into a production search ranking system using Go, Elasticsearch, and PHP. The role centered on operating latency-sensitive search infrastructure and improving system behavior under real product load.

  • Integrated data science outputs into production backend systems
  • Worked on search relevance, ranking performance, and service integration

Software Developer

Aardvark Technologies | March 2019 - November 2019

Built Go microservices and delivered full-stack systems for client projects. This role strengthened service design fundamentals and day-to-day ownership of independently deployable components.

  • Built and maintained Go-based microservices
  • Delivered production features across backend and frontend stacks

Software Developer

Paysera | July 2017 - February 2019

Built anti-money-laundering and transaction monitoring systems for a financial platform. The work required correctness, traceability, and reliable processing in a regulated environment.

  • Developed a dynamic rule engine backed by Elasticsearch
  • Worked on critical compliance and monitoring workflows

Software Developer

EGROUP EU | October 2016 - June 2017

Developed a SaaS loan management platform using PHP, building the early foundation of long-lived business systems in production.