- Implemented feature preparation and cleaning pipelines using Apache Kafka, Apache Spark (Python, Scala) and Apache Flink (Java) to ensure high-throughput, low-latency input data for ML models. - Developed backend services and REST APIs in Java/Spring and Python/FastAPI to operationalize ML models (Python, MLFlow) and streaming analytics (Prometheus, Grafana) in production environments. - Designed and implemented 20+ prototypes and PoCs for presales, showcasing innovative solutions in Big Data, ML, streaming, and distributed backend architectures. - Created Data Lake(Hadoop) or ETL over MPP (GreenPlum) using Spark (Python, Scala), Hadoop, Kafka with orchestration in Airflow and data layers in Hive, Clickhouse and PostgreSQL. - Integrated ML model training, tracking, and deployment workflows using MLflow, Jupyter notebooks, Python/scipy/pandas/fastapi , supporting versioned experimentation and reproducible model lifecycle management. - Deployed and managed containerized workloads with Docker, Kubernetes, Helm, and Terraform across hybrid (on-premise and Yandex Cloud) infrastructures. Domains: Financial, Industrial Tech stack: Java, Python, Scala, Spark, Flink, Kafka, Airflow, MLflow, Prometheus, Grafana, PostgreSQL, ClickHouse, Greenplum, Docker, Kubernetes, Terraform, Yandex Cloud

- Architected and developed a distributed data processing system for financial analytics, enabling large-scale tax data aggregation, transformation, and reporting. - Optimized Spark/Hadoop batch workflows and Kafka streaming pipelines, improving processing performance by 2–10×. - Designed and implemented backend services, batch and streaming pipelines, integrating Java, Scala, and Python jobs for high-throughput financial data processing. - Built data storage for structured and unstructured data with Hadoop, Apache Hive, Oracle, PostgreSQL, ElasticSearch, and HBase for scalable query performance. - Worked over technical architecture decisions and collaborated with cross-functional teams on system optimization, governance, and production readiness. Tech stack: Java, Scala, Python, Kafka, Spark, Hadoop, Hive, Airflow, PostgreSQL, ElasticSearch, HBase Domain: Financial / Tax Analytics

Architected and implemented large-scale financial data processing systems for the Russian Federal Tax Service. - Designed backend services, data lake, and distributed processing architectures on on-premise Hadoop/Spark clusters, ensuring scalability and reliability. - Developed and optimized ETL pipelines and batch/streaming workflows using Spark, Flink, and Java-based backend services. - Worked over technical design and architecture decisions, collaborating with customer's teams to deliver maintainable, high-performance platforms. Tech stack: Java, Scala, Python, Spark, Flink, Kafka, Hive, Linux Domain: Financial

- Architected and implemented a distributed analytics platform for mobile and GPS signal processing using Hadoop, Spark, Kafka, Java, and Scala. - Developed backend services and APIs in Java to support data ingestion, processing, and analytics workflows. - Built data pipelines to model traffic patterns and population movement, integrating batch and near-real-time processing. - Deployed and managed analytics clusters on AWS EMR/EC2, optimizing performance. - Designed scalable, fault-tolerant backend systems supporting high-throughput distributed data processing. Tech stack: Java, Scala, Python, Spark, Hadoop, Hive, MongoDB, Redis, AWS Domain: Telecom

Design and development System-112 monitoring solution for EMERCOM of Russia. Java EE 6, JBoss AS, PostgreSQL, Spring MVC, Apache Tiles, jax-ws, jax-rs, JSP, javascript, jquery, html, css, Linux Ubuntu Server Design and development System-112 integration solutions for EMERCOM of Russia. Java EE 6, GlassFish, PostgreSQL, Spring MVC, jax-ws, jax-rs, JSP, javascript, jquery, html, css, Linux Ubuntu Server Development System-112 operator work place. Java EE 6, GlassFish, PostgreSQL, Spring MVC, jax-ws, jax-rs, JSP, javascript, jquery, html, css, Linux Ubuntu Server Refactoring EMERCOM of Russia dictinaries system Java EE 6, JBoss AS, JSF, PostgreSQL, javascript. Banking system design and development

Designed and developed back office for http://cityofsydney.nsw.gov.au government web site Integrated back office with existing customer’s system Developed front office modules Designed and implemented deployment procedure

Short 4 months contract Developed www.gadens.com.au, public portal for Gadens Lawyers company Developed Active Directory integrated document compliance solution for Sims Metals company Worked both at customer's site and on house

Worked in outsourcing department in distributed teams for American, English customers. Participated in more then 10 projects. Developed a central part of BOSS-REFERENT document processing system Developed social network website http://tabup.com Performed large amount of R&D in projects Implemented new technologies in projects, improved development process.

Designed and developed LB module for FORIS system - enterprise telecommunications solution for mobile and fixed phone operators. Designed, developed and migrated databases (Microsoft SQL Server, Oracle) Designed and developed CRM module for FORIS system.

Implement business solutions for the organization Gathered requirements from internal customers Managed scope, time, risk in projects for internal customers Deploy solutions to internal customer Consulted internal customers

R&D, prototyping and creating module for banking automation system, Participating in development of solution for Russian Railways resource management system Writing application modules. Worked with technologies: C++, MsVisualC, Win32API, Assembler, Delphi.