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Andrii Zelenets

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Full Stack Product Engineer with strong ability to collaborate effectively with AI tools. Turning product requirements into a secure, scalable solution using...
Prague, Czechia

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Jobs verified_user 0% verified
  • 8am
    Senior Software Engineer
    8am
    May 2026 - Current (6 months)
  • Svitla Systems, Inc.
    Full Stack Engineer
    Svitla Systems, Inc.
    Jun 2022 - Feb 2026 (3 years 9 months)
    Worked as a remote full-stack engineer for a synthetic biology company, developing software for a proprietary DNA synthesis manufacturing platform. Delivering robust backend services and user interfaces that coordinate laboratory hardware, instruments, and human operators, ensuring mission-critical workflows run efficiently, reliably, and securely. Key Achievements: - Refactored legacy checkout flow into a secure, SOX-compliant, modular, auditable checkout process, that supports financial transparency. - Implemented a consistent, reusable design system, ensuring UI and functional consistency across new and legacy pages, reducing future development effort and maintenance. - Implemented updates to the pricing system, enabling dynamic adaptati
  • Seeking Alpha
    Full Stack Engineer
    Seeking Alpha
    Sep 2021 - Feb 2025 (3 years 6 months)
    Worked in the Marketing & Subscriptions team, enhancing a financial media platform with 300K+ global users. Delivered scalable features, subscription flow improvements, and marketing automation, driving measurable business impact. Key Achievements: - Contributed to the payment system migration (Zuora to Stripe), improving checkout stability by 40% and driving a 10% increase in paid subscriptions. - Led HubSpot + SailThru integrations, handling everything from email composition to smart scheduling, telemetry, and synchronisation - enabling more personalised marketing campaigns. - Integrated advanced marketing analytics and streamlined cross-department workflows, boosting business efficiency by 15%. - Initiated a large-scale refactor of legac
  • T
    Engineering Project Lead | Full Stack Engineer
    The Skills
    Feb 2020 - Dec 2021 (1 year 11 months)
    Led full-cycle development of an online sports video education platform, from concept to production, helping the client secure $4.9M in funding and scale to 20,000+ users. Oversaw system architecture, API design, backend services, frontend implementation, and DevOps automation. Key Achievements: - Designed and delivered the MVP under tight deadlines, enabling the client to attract $4.9M in first-round funding. - Led development of 4 interconnected applications: marketing site, admin panel + API, checkout, and cloud-based video converter. - Upgraded the payment system to support multi-currency, subscriptions, one-time payments, discounts, and gifts, increasing monetisation opportunities. - Designed and documented 110+ REST API endpoints with
  • S
    Engineering Tech Lead | Full Stack Engineer
    Sloboda Studio
    Aug 2019 - Nov 2020 (1 year 4 months)
    Led an engineering team of full-stack developers, driving project execution, mentoring engineers, and ensuring consistent delivery of high-quality, client-ready software solutions. Partnered with stakeholders to transform business requirements into scalable, maintainable applications across diverse domains. Key Achievements: - Hired, trained, and mentored 5 junior developers, accelerating their growth and raising overall team performance. - Solved complex technical challenges for 4+ client projects, achieving 97%+ customer satisfaction and contributing to one client being acquired. - Conducted 10+ structured interviews, improving hiring efficiency by 25% and ensuring strong cultural and technical fit. - Authored a comprehensive onboarding h
  • Apriorit
    Team Lead | Full Stack Engineer
    Apriorit
    Jan 2019 - Aug 2019 (8 months)
    Led a team of 5 engineers delivering a next-generation biometric identity authentication solution for a leading US-based provider of identity and access management (IAM) solutions, used by Fortune 500 companies to protect sensitive data and systems. Key Achievements: - Enhanced multi-factor authentication (MFA) and identity workflows, helping enterprises reduce unauthorised access risks. - Built and optimised RESTful APIs supporting large-scale integrations with corporate systems. - Performed OWASP audits and guided the team through a successful CheckMarx certification, ensuring enterprise-grade security and compliance. - Directed 5 developers, defined architecture, facilitated knowledge sharing, and ensured smooth project delivery. - Creat
  • Yalantis
    Back End Developer
    Yalantis
    Dec 2016 - Dec 2018 (2 years 1 month)
    Worked across the entire software lifecycle - from requirements and estimation to architecture, implementation, testing, and deployment. Partnered with both technical and business teams to deliver scalable, user-centric solutions that directly supported client success and company growth. Key Achievements: - Actively participated in client meetings, translating business needs into technical solutions. Helped close 3 deals worth $200K by building trust and demonstrating solution feasibility - Designed and deployed applications on AWS (EC2, ECS, Lambda, S3), improving scalability and reducing deployment effort by 30% - Re-engineered deployment workflows, cutting release errors by 25%, shortening cycles by 25%, and lowering bug incidents by 20%
  • LoopMe
    Middle Software Engineer
    LoopMe
    Nov 2015 - Dec 2016 (1 year 2 months)
    Contributed as a Full-Stack Engineer to LoopMe, a global AI-driven mobile advertising platform used by top brands and agencies worldwide. Focused on developing and optimising ad delivery, campaign management, and high-performance backend systems. Key Contributions: - Developed features for managing and optimising ad campaigns, enabling global brands to track performance and scale advertising reach. - Implemented integrations with advertising exchanges and improved system efficiency to handle high-volume transactions. - Built and deployed innovative ad formats that expanded LoopMe’s offerings, improving engagement rates for advertisers. - Enhanced system scalability and response time to support millions of daily requests across international
  • Grid Dynamics
    Middle Software Engineer
    Grid Dynamics
    Feb 2015 - Oct 2015 (9 months)
    Contributed to the development of scalable platforms across e-commerce, gaming, crowdfunding, and creative industries. Key Projects (4 projects delivered): - NowShop (UK) - Built features for a multi-tenant e-commerce marketplace platform, used by publishers like Hearst Magazines to power branded online shops. Integrated PayPal & Stripe payments, third-party APIs, and custom marketplace modules. - Gambitious (Global) - Contributed to a gaming-focused crowdfunding platform for indie developers and publishers. Supported feature development and integrations to enable secure funding and community-driven campaigns. - Rev9 (US/Global) - Developed platform for emerging artists to create customizable websites for promoting and selling their work. F
  • A
    Junior Software Engineer
    Agilie
    May 2013 - Jan 2015 (1 year 9 months)
    Started my career at Agilie, a modern software development company, where I quickly transitioned from mobile development into full-stack web engineering. Successfully completed my first project - a Windows Phone app in C# - within 3 months, then specialized in web solutions across multiple domains. Key Contributions (9 projects delivered): - Gov project, city travel portal - Led development of the official travel portal from concept to launch. Integrated Feratel booking API, built admin panel, and delivered a scalable solution used by travelers across worldwide. - Smart Home IoT Solution - Migrated backend from Symfony to Ruby on Rails + AWS, designed APIs, and improved system architecture. Enabled secure notifications (fire, intrusion, hum
  • CSoft
    Junior Software Engineer
    CSoft
    Oct 2012 - Apr 2013 (7 months)
    TDMS provides automation of the entire cycle of tasks related to planning and operational management of works, storage, retrieval, and development of technical information and documentation
  • G
    Junior System Engineer
    GIPROMEZ
    Jun 2012 - Sep 2012 (4 months)
    Ukrainian enterprise whose main field of activity is the design of metallurgical plants. Responsibilities: - Design and develop software for systems of the industrial control systems using SIEMENS SIMATIC micro-controllers - Design human-machine interface
Education verified_user 0% verified
  • Dnipro University of Technology
    master, Master of Science (M.Sc.), Mechatronics, Robotics, and Automation Engineering, A
    Dnipro University of Technology
    Jan 2009 - Jan 2012 (3 years 1 month)
  • D
    Junior Specialist, Automation Engineer Technology/Technician, A
    Dnipro Polytechnical College
    Jan 2005 - Jan 2009 (4 years 1 month)
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