Roman

Roman Horishnyi
Lviv | U.S Citizen [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) ​
LinkedIn: [open contact info](look above in the "contact info" section)​ GitHub: https://github.com/nordew

SUMMARY
Results-oriented backend developer with 4+ years of hands-on experience in building high-performance
systems using Golang, REST, gRPC, PostgreSQL, and Docker, etc.
Specialized in designing scalable monolithic and microservices-based architectures, as well as distributed
systems, ensuring reliable and high-quality code delivery.

TECHNICAL SKILLS
Programming Languages: Golang, C/C++, JavaScript
Frameworks and Databases: Vue, Nuxt, PostgreSQL, MongoDB, Dragonfly, Redis, MinIO, S3
Tools: Git, Scrum Agile Methodologies, Postman, AWS (S3, SQS, Lambda), CI/CD, Unit tests

WORK EXPERIENCE

Software Engineer​ ​ ​ ​ ​ ​ ​ Contract 09/2024 – 01/2025
ContentQUO, Tallinn, Estonia

●​ Contributed to developing a complex SaaS LQA platform with a focus on integrating external
APIs and scalable microservice architecture
●​ Optimized API integrations and data pipelines, improving performance and platform functionality.
●​ Collaborated with cross-functional teams to align technical solutions with business needs.
●​ Resolved technical challenges and ensured system reliability.
●​ Supported continuous improvements to enhance platform efficiency and user satisfaction.

Software Engineer​ ​ ​ ​ ​ ​ ​ ​ 03/2024 – 10/2024
Overdone, Kyiv, Ukraine

●​ Led the development of a Web3 prediction platform, integrating blockchain technology for
transparent and decentralized outcomes.
●​ Built a custom Oracle service to securely fetch external data for on-chain predictions.
●​ Designed and implemented a scalable back-end architecture, including ERD and REST APIs,
improving collaboration and data flow.
●​ Developed a Telegram bot back-end, delivering real-time updates and boosting user
engagement.
●​ Collaborated with front-end teams to ensure seamless integration of platform features.
●​ Contributed to scalability, performance, and reliability through robust back-end solutions.
Software Engineer​ ​ ​ ​ ​ ​ ​ ​ 01/2023 – 12/2023
Spreetail, Los Angeles, CA

●​ Led the transition to a microservice architecture, improving scalability and maintainability.
●​ Developed key microservices in GoLang, reducing downtime by 30% and boosting reliability.
●​ Integrated third-party services for payment processing and logistics.
●​ Defined clear communication protocols to optimize microservice interactions.
●​ Worked with DevOps to implement containerization using Docker and Kubernetes.
●​ Integrated monitoring tools for real-time performance tracking and issue diagnosis.
●​ Mentored junior developers and improved development practices.
●​ Enhanced system performance and scalability through architecture design contributions.

Software Engineer​ ​ ​ ​ ​ ​ ​ ​ 01/2021 – 10/2022
Creatly LMS, Kyiv, Ukraine

●​ Designed and implemented REST APIs to enhance communication and boost system reliability.
●​ Built the Dynamic Students Cabinet for managing learner progress and resources.
●​ Developed the Flexible Courses API to streamline course creation workflows.
●​ Integrated a secure and efficient payment system for online transactions.
●​ Contributed to establishing Creatly as an edtech leader with user-focused features.

EDUCATION
Lviv Polytechnic National University, Ukraine​ ​ ​ ​ 2023-2027
Cybersecurity​ ​ ​ ​ ​ ​ ​ ​