Denis O.

Experience

• 

  Moscow United Electric Grid Company

  Aug 2018 - Mar 2020

  Substation Engineer

  • Operated and maintained high-voltage equipment (up to 220 kV) in a critical infrastructure environment, ensuring uninterrupted power supply to the Moscow region.• Managed and coordinated the activities of operational personnel during both routine operations and emergency situations, enhancing team efficiency and response times.• Utilized SAP for equipment maintenance scheduling, documenting inspections, and managing spare parts inventory, improving overall substation reliability.

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  Association “NP Market Council”

  Mar 2020 - Sept 2022

  • Assisted in calculating electricity costs for wholesale market participants using advanced Excel functions and VBA, supporting the core financial settlement process.• Performed initial data verification and validation for financial settlements, ensuring data integrity and accuracy.• Developed and maintained Excel-based tools for routine analytical tasks, improving efficiency in daily operations.• Participated in testing software updates by creating basic test cases in Excel, providing valuable feedback to the development team.• Prepared drafts of informational and reference materials for internal use, contributing to knowledge sharing within the team.• Monitored changes in wholesale market regulations and assisted in updating calculation methodologies accordingly, ensuring compliance with current standards. Show less

  • Energy Market Analyst

    Dec 2021 - Sept 2022

  • Junior Energy Market Analyst

    Mar 2020 - Dec 2021
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  Upwork

  Nov 2022 - Jun 2023

  Flutter Developer

  • Developed and delivered custom mobile applications for various clients using Flutter and FlutterFlow.• Gained extensive experience in cross-platform development, Firebase integration, and API services implementation.• Successfully integrated multiple payment services for subscriptions and in-app purchases, including Stripe and RevenueCat.• Collaborated with clients to understand requirements and deliver tailored solutions.• Published applications on both Play Store and Apple Store. Show less

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  Les Amis

  Jul 2023 - Dec 2024

  Software Engineer

  • Developed and implemented a modular user matching algorithm, increasing scalability and preparing for future AI integration.• Expanded app coverage from 2 to 6 cities post-launch, significantly increasing user base.• Optimized user registration flow, resulting in a 50% increase in conversion rate from ad clicks to registered users.• Designed and implemented a referral system with discounts and bonus credits, enhancing user acquisition.• Created a custom credit allocation system integrated with Stripe, balancing business needs with user subscription states.• Successfully migrated the existing SQL database to Firestore NoSQL, while simultaneously transitioning the app from Bubble to Flutter for iOS and Android platforms.• Developed backend services using Node.js and Firebase Cloud Functions.• Integrated various third-party services and APIs, including Sendgrid, Stripe, Google Analytics, Airtable, and push notifications.• Maintained and developed new features for the existing application using staging environments.• Implemented CI/CD pipelines using GitHub Actions for Firebase Cloud Functions. Show less