Sergey Grashchenko
Sergey Grashchenko

Principal Engineer / Software Architect

Actively looking · Member since 29 Jun 2026
Message
Location
Russia
Desired salary
Unspecified
Work preference
Full Time
Experience level
Not set

About

Professional summary

I am a highly accomplished technical leader and hands-on engineer with more than 23 years of experience designing, evolving, and scaling mission-critical enterprise systems.

I have led major platform modernization efforts, including transforming legacy C++/CORBA systems into modern Java EE / Jakarta EE microservices architectures. My work has focused on building resilient, low-latency distributed systems and cloud-native platforms that can support demanding enterprise workloads.

I specialize in bridging engineering execution with long-term technology strategy. I have worked closely with cross-functional teams to define architecture standards, improve delivery alignment, and guide modernization across large organizations.

My background includes deep experience in banking and high-security environments, where I have designed mitigation strategies for multitenancy risks, introduced Zero Trust Architecture, and supported observability and chaos engineering practices to improve reliability and reduce MTTR.

I also have strong expertise in high-throughput data processing, distributed caching, Kubernetes, containerization, CI/CD automation, and performance optimization. Across my career, I have helped improve infrastructure utilization, scalability, and operational efficiency in complex enterprise ecosystems.

I have held senior architecture roles at organizations such as Sberbank, VTB, Grid Dynamics, and Sberbank-Technologies, where I contributed to architecture governance, solution design, and engineering leadership. I have also mentored architects and senior engineers while supporting large-scale platform delivery.

My academic background includes an MS in Applied Math and Physics from Moscow Institute of Physics and Technology, and PhD studies in Physics at the University of Southern California.

Skills

12 capabilities

Experience

Career history

Software / Platform Architect Sberbank

Owned architecture work for reliability-critical banking platform areas, combining platform strategy, solution design, and delivery support. Researched multitenancy risks and designed mitigation approaches for safer shared-platform operation, implementing Zero Trust Architecture. Supported customer architectural onboarding, improved platform penetration and retention, analyzed capacity and platform utilization, improved hardware sizing/utilization by 10-50%, introduced Chaos Engineering practices, defined observability standards using Grafana, produced and reviewed architecture artifacts, mentored architects and senior engineers, and supported IT4IT-compliant system design for platform billing automation and FinOps.

Architect Innotechnum / VTB

Worked as an architect in a VTB banking context, supporting architecture decisions for enterprise delivery. Helped shape solution design across business, integration, and technology constraints. Applied architecture documentation, review, and stakeholder communication practices in a regulated banking environment.

Architect Grid Dynamics

Delivered customer-facing architecture work in an English-speaking environment. Supported architecture discovery, solution design, and communication with engineering and customer stakeholders. Applied distributed-systems, enterprise integration, and delivery architecture experience to client contexts.

Chief Architect Sberbank-Technologies

Led architecture direction for large enterprise platform work in a banking technology environment. Designed event-driven document-processing improvements that reduced delays to milliseconds while preserving throughput. Supported architecture governance, modernization planning, delivery alignment, and engineering team coordination.

Architect / Principal Developer Odin / Parallels / Ingram Micro

Drove modernization of legacy C++/CORBA platform areas toward a Java EE ecosystem. Supported modularization and continuous delivery across 300+ heterogeneous components and 2M+ lines of code. Helped scale engineering change across 40+ developers in 6 teams and worked across architecture, principal engineering, platform decomposition, and delivery enablement.

Architect / Principal Developer Interphoto

Designed and developed backend systems for file and order processing for factory production on demand, including netprint.ru and affiliates. Covered full SDLC: high-load optimization, vulnerability analysis, complex use-case analysis, design drafts, and datacenter hardware evolution planning. Built a customizable clustered petabyte-scale data processing system with 200M+ in-house files, designed a commodity-server-node architecture comparable to GFS/Hadoop-style distributed storage/processing systems, and built a distributed private-cloud architecture using JBoss Clustering, JMS/AMQP messaging, and REST services.

Education

Learning history

Moscow Institute of Physics and Technology (MIPT)

MS in Applied Math and Physics

University of Southern California (USC)

PhD studies in Physics (incomplete)

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