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Slobodan Erak

@slobodanerak

Backend developer at Missive who delivered an OAuth server, an MCP server, and Activity Center.

At Missive, I delivered user-facing features including an OAuth server, a Model Context Protocol (MCP) server, and Activity Center. I also resolved escalated support issues through customer communication, investigation, and software fixes.

At Altmetric, I developed Altmetric Explorer, a Ruby on Rails application for visualizing research data, and created and maintained Ruby gems and ETL applications processing JSON and XML APIs.

At Consulteer AG, I led a Ruby team enhancing infrastructure for Swiss client Nine.ch. Across my work, I’ve built and maintained web applications, APIs, and data-processing systems, with a focus on Ruby and Ruby on Rails.

Experience

Work history, roles, and key accomplishments

Backend Developer

Missive

Jan 2026 - Sep 2026 (8 months)

Delivered user-facing features including an OAuth server, a Model Context Protocol (MCP) server, and Activity Center. Resolved escalated support issues through daily customer communication and software fixes.

OAuth Model Context Protocol Ruby Ruby on Rails Customer Support On Call

Technical Lead

Altmetric

May 2021 - Dec 2025 (4 years 7 months)

Managed and improved a large-scale data processing ecosystem using Ruby, PHP, and Node.js. Developed Altmetric Explorer, a Ruby on Rails application for visualizing research data, and led small engineering teams.

Ruby PHP NodeJS Ruby on Rails ETL JSON XML APIs Git Code Review On Call

Ruby Team Lead

Consulteer AG

Feb 2018 - May 2021 (3 years 3 months)

Led a Ruby team enhancing infrastructure for Swiss client Nine.ch. Developed customer-facing and internal Ruby on Rails applications and Ruby command-line tools.

Ruby Ruby on Rails Gitlab CI Command Line Tools API Development

Freelance Ruby on Rails Developer

Upwork

Jun 2017 - Feb 2018 (8 months)

Worked with multiple teams and projects, including BOSS811, a Ruby on Rails ticket management system for the 811 service used across multiple U.S. states.

Ruby on Rails Ticket Management Systems