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I’m Pavlo Lazunko, a system architect, team lead, and CTO with a passion for building scalable software and leading high-performance engineering teams. I design architectures across imperative, declarative, and mixed paradigms, and I apply DRY, SOLID, and SLAP in practice. I have led initiatives in payments, ERP/CRM, corporate messaging, and real-time streaming with WebRTC and WebSockets.\n\nBeyond coding, I mentor engineers, conduct technical interviews, and align technical direction with business goals. I’m skilled in cloud infrastructure, microservices, and DevOps, and I enjoy turning complex problems into maintainable solutions that scale.…I’m Pavlo Lazunko, a system architect, team lead, and CTO with a passion for building scalable software and leading high-performance engineering teams. I design architectures across imperative, declarative, and mixed paradigms, and I apply DRY, SOLID, and SLAP in practice. I have led initiatives in payments, ERP/CRM, corporate messaging, and real-time streaming with WebRTC and WebSockets.\n\nBeyond coding, I mentor engineers, conduct technical interviews, and align technical direction with business goals. I’m skilled in cloud infrastructure, microservices, and DevOps, and I enjoy turning complex problems into maintainable solutions that scale.

Pavlo Lazunko

Architect, Full Stack Developer, Web Developer, +4

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I’m Pavlo Lazunko, a system architect, team lead, and CTO with a passion for building scalable software and leading high-performance engineering teams. I design architectures across imperative, declarative, and mixed paradigms, and I apply DRY, SOLID, and SLAP in practice. I have led initiatives in payments, ERP/CRM, corporate messaging, and real-time streaming with WebRTC and WebSockets.\n\nBeyond coding, I mentor engineers, conduct technical interviews, and align technical direction with business goals. I’m skilled in cloud infrastructure, microservices, and DevOps, and I enjoy turning complex problems into maintainable solutions that scale.…I’m Pavlo Lazunko, a system architect, team lead, and CTO with a passion for building scalable software and leading high-performance engineering teams. I design architectures across imperative, declarative, and mixed paradigms, and I apply DRY, SOLID, and SLAP in practice. I have led initiatives in payments, ERP/CRM, corporate messaging, and real-time streaming with WebRTC and WebSockets.\n\nBeyond coding, I mentor engineers, conduct technical interviews, and align technical direction with business goals. I’m skilled in cloud infrastructure, microservices, and DevOps, and I enjoy turning complex problems into maintainable solutions that scale.

Available to hire

I’m Pavlo Lazunko, a system architect, team lead, and CTO with a passion for building scalable software and leading high-performance engineering teams. I design architectures across imperative, declarative, and mixed paradigms, and I apply DRY, SOLID, and SLAP in practice. I have led initiatives in payments, ERP/CRM, corporate messaging, and real-time streaming with WebRTC and WebSockets.\n\nBeyond coding, I mentor engineers, conduct technical interviews, and align technical direction with business goals. I’m skilled in cloud infrastructure, microservices, and DevOps, and I enjoy turning complex problems into maintainable solutions that scale.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

Spanish; Castilian

Intermediate

Japanese

Beginner

Work Experience

System Architect, Team Lead at Hedge Fun D

January 1, 2019 - January 1, 2025

Designed system architecture and high-level structure for a complex distributed billing CRM consisting of 20+ microservices and 50+ third-party APIs. System serves 300k users with ~10M transactions per month. Defined component interactions, service boundaries, and non-functional requirements (scalability, security). Created architecture documentation and diagrams, collaborated with developers, DevOps, and stakeholders, and validated architecture via PoCs, testing, and code reviews. Established standards for long-term maintainability and evolvability.

Founder, CTO at Data Bikers Limited

January 1, 2024 - January 1, 2026

Led architecture and development of in-house DBMS and open-source projects used by 127 companies. Built and managed a small, high-performing engineering team. Launched two products and aligned technical direction with business goals and long-term vision.

Senior Backend Developer, Team Lead at Powercode Inc

January 1, 2017 - December 31, 2019

Designed architecture solutions and database schemas for Node.js projects, including ERP systems, CRMs, and messaging platforms. Conducted technical interviews, mentored team members, and contributed to boilerplates, reusable packages, and DevOps templates to streamline project setup and deployment.

Full Stack Developer at Freelance

January 1, 2007 - December 31, 2017

Diverse experience in building robust backend systems and dynamic frontends, leading end-to-end project lifecycles, maintaining CI/CD pipelines, Dockerizing services, and deploying applications to cloud platforms (AWS, DigitalOcean, Google Cloud). Collaborated with designers, product owners, and stakeholders in Agile remote environments.