Valentin Nikolaev

Simple develops a subscription-based digital health platform focused on nutrition, healthy routines, weight management, tracking tools, and an AI coach.

I design and own a support automation platform that connects Zendesk, Intercom, and internal services through a robust, scalable backend in Go. My work enables the support team to operate faster, smarter, and at scale - even during peak loads.

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I architect and lead the development of the platform’s internal event analytics infrastructure - a mission-critical system that powers product metrics, reporting, and business insights.

• Architect a scalable, event-driven system using queues and EventBridge, increasing throughput to the DataLake by over 10x
• Define a robust, versioned event schema to enforce consistency across teams and acceler

AirSlate is a global SaaS technology company specialized in no-code business process automation, document management, and e-signature solutions.

• Played a key role in Agile planning with Product Management and Development, building feature road maps and supporting release plans.
• Was responsible for delivering team assignments on all stages of the project from draft to production release.
• Per

• Migrated managed services from ECS to Kubernetes. Prepared infrastructure for launching services in Kubernetes (Helm charts, GitHub Actions, ArgoCD), leading to 30% cost cutting and over 20% performance boost.
• Lowered the maximum workload on the main database to 65% to avoid any interruptions in the product's service during prime time, resulting in a 23% reduction in operational expenses.
• De

• Brought an innovative Web-3 based social and NFT platform from its initial prototype to a more advanced closed beta stage in less than 6 months.
• Worked closely with business and technical stakeholders on building a product and defining OKRs.
• Outlined and managed the technological plan for the product, and collaborated closely with the CTO to establish the essential set of technologies for bu

SIXT is a leading international provider of high-quality mobility services.

• Developed microservices to comply with the requirements of the European Union's General Data Protection Regulation (EU GDPR).
• Developed and enhanced codebase in strict compliance with the PCI DSS (Payment Card Industry Data
Security Standard)
• Lead and participated in internal and external assessments of technical v

Founding member of the in-product backend team responsible for high-volume transactional and lifecycle email systems.

• Lead a team of 5 backend engineers, responsible for development of a service for transactional emails.
• Made key technical decisions at all steps of the project. Gained an in-depth understanding of the technical aspects of messaging, such as email FBLs, DNS, DKIM, SPF, DMARC, other fundamental components and tools.
• Expanded the service's capabilities to accommodate around 50 million emails on

• CoinsBank / bit-x: designed and implemented new features in an exchange core component, integrated Stripe / PayPal / Skrill, introduced an event-based real-time notification system, and worked on service performance optimization.
• Aurum Software: worked on backend-heavy product development, database normalization and query optimization, reporting systems, planning algorithms, integration script