Looking for a job

Sascha-Oliver Prolic

@sascha-oliverprolic

Software architect and open-source maintainer who created prooph/event-store and developed futr, a Haskell Nostr client.

Paraguay

Message

What I'm looking for

I'm based in Paraguay and available for global remote opportunities, working with distributed teams across time zones.

I created prooph/event-store, an open-source PHP event store, and maintain futr, a Haskell Nostr client. OpenSats sponsored my work on futr, where I independently developed a full-featured client with a Qt5 frontend.

At Heady LLC, I architected a headless CMS and improved JSON API response times from 2 seconds to 2 milliseconds. I also implemented a conversational assistant that used vector databases, LangChain, and LLM APIs to provide contextual responses across enterprise content.

At PingLeads, I rewrote and launched a legacy call-routing platform and led four developers through its redesign. The new system improved reliability by 95%, and its real-time analytics dashboard reduced customer support tickets by 60%.

Across my work at HelpMyCash, Modus Create SRL, DiMaBay GmbH, Rocket Internet GmbH, and RegioCom GmbH, I contributed to financial and enterprise software, team leadership, and event-driven architecture. I work remotely from Paraguay and contribute to open-source communities focused on Haskell, PHP, and software architecture.

Experience

Work history, roles, and key accomplishments

Open Source Contributor

OpenSats

Apr 2024 - Oct 2025 (1 year 6 months)

Independently developed a full-featured open-source Nostr client in Haskell with a Qt5 frontend, sponsored by OpenSats. Designed and implemented the entire application stack end-to-end, including event processing, relay communication, and UI integration.

Haskell Qt5 Nostr Event Processing Relay Communication UI Development

Senior Software Architect & AI Research Consultant

Heady LLC

Apr 2022 - Aug 2023 (1 year 4 months)

Architected and developed a proprietary headless CMS for enterprise clients, led migration from Laravel 5 to 8 and PHP 7.2 to 8.2, and optimized JSON API performance by 1000%. Implemented an AI-powered conversational assistant with knowledge-base integration using vector databases, LangChain, and LLM APIs.

Laravel PHP JSON:API Docker AI Lang Chain Vector Databases LLM ChatGpt

Software Architect & Team Lead

PingLeads

Sep 2019 - Oct 2021 (2 years 1 month)

Managed a legacy call routing platform serving 10K+ daily calls, successfully rewrote and launched the application from scratch, improving reliability by 95%. Led a team of 4 developers through a complete system redesign and implemented a real-time analytics dashboard.

Call Routing System Redesign Team Leadership Real Time Analytics Reliability

CTO & Team Lead

HelpMyCash

Jul 2018 - Jul 2019 (1 year)

Developed a financial product comparison platform processing significant transaction volumes, leading a team of 4 developers. Implemented an automated testing suite reducing production bugs by 80% and designed API architecture serving 100K+ monthly active users.

Fintech API Architecture Testing Automation Team Leadership Scalability

PHP Backend Developer & Technical Team Lead

Modus Create SRL

Jul 2017 - Jan 2018 (6 months)

Contributed to EDR's collateral360 project used by major banks, leading a team of 8 developers. Implemented microservices architecture improving scalability by 300% and delivered the project 2 weeks ahead of schedule while maintaining 99.9% uptime.

PHP Microservices Team Leadership Financial Software Scalability

Software Architect & Team Lead

DiMaBay GmbH

Sep 2014 - Nov 2016 (2 years 2 months)

Developed a comprehensive business platform for package inserts covering the entire workflow, leading a team of 6 developers. Implemented event-driven architecture reducing system complexity by 50% and delivered a solution handling 1M+ documents annually.

Event Driven Architecture Team Leadership Business Platforms Workflow Management

Software Architect & Team Lead

Rocket Internet GmbH

Apr 2012 - Aug 2013 (1 year 4 months)

Planned, designed, and developed code generation tools for automated client platforms, and developed the application layer for a RabbitMQ-based queuing framework. Led a team of 5 developers, providing coaching and mentoring on best practices.

Code Generation RabbitMQ Team Leadership Design Patterns Messaging

Team Lead & PHP Software Developer

RegioCom GmbH

Sep 2011 - Mar 2012 (6 months)

Developed an intranet platform covering business processes for E.ON AG, leading a team of 5 developers using PHP, MySQL, Zend Framework, and Doctrine. Implemented an automated deployment pipeline reducing deployment time by 80% and delivered a solution serving 5K+ internal users.

PHP MySQL Zend Framework Doctrine Deployment pipelines Team Leadership