Publication
Buggy Java Code: The Top 10 Most Common Mistakes That Java Developers Make
https://www.toptal.com/developers/java/top-10-most-common-java-development-mistakes
Mikhail is currently unavailable
Mikhail Selivanov
Verified Expert in Engineering
Software Developer
Solna, Sweden
Toptal member since August 15, 2013
Bio
Mikhail is an experienced software engineer with over 19 years in the tech industry, possessing deep expertise in the JVM stack and data-heavy applications. He has a proven track record in building resilient back ends for distributed systems and setting up data pipelines. Mikhail is committed to optimizing development processes and finding robust solutions to technical problems, as well as taking responsibility for talking to stakeholders and creating project documentation.
Portfolio
Blocket
Amazon Web Services (AWS), Snowflake, Google Cloud Platform (GCP), SQL, Python...
Schibsted
Data Build Tool (dbt), Apache Airflow, Amazon Web Services (AWS), Terraform...
Discovery
Java, Spring Boot, SQL, Apache Kafka
Experience
- SQL - 16 years
- Git - 14 years
- Java - 14 years
- Apache Airflow - 6 years
- Terraform - 6 years
- Linux - 5 years
- Functional Programming - 4 years
- Python - 2 years
Preferred Environment
IntelliJ IDEA, Git, Linux
The most amazing...
...software I've helped create is an authorization server written in D that uses in-memory triplet storage as a database.
Work Experience
Senior Data Engineer
2023 - 2024
Blocket
- Implemented a cloud cost optimization on AWS resulting in a multi-thousand monthly cost reduction.
- Crafted and implemented a data pipeline based on GCP.
- Designed performance optimization for one of the important data pipelines.
Technologies: Amazon Web Services (AWS), Snowflake, Google Cloud Platform (GCP), SQL, Python, Terraform
Senior Data Engineer
2022 - 2023
Schibsted
- Orchestrated data integrations involving AWS, Snowflake, and dbt.
- Led the migration of workloads from Airflow 1 installation to Airflow 2.
- Implemented cost and performance optimization strategies.
- Worked with another dozen or two teams across the organization to onboard them on the shared infrastructure.
- Onboarded four new colleagues to get them up to speed with the platform.
Technologies: Data Build Tool (dbt), Apache Airflow, Amazon Web Services (AWS), Terraform, Terragrunt, Python, Snowflake
Senior Back-end Engineer
2022 - 2023
Discovery
- Enhanced metric reporting through Prometheus and Grafana.
- Facilitated the transition of REST endpoints to a dedicated microservice.
- Developed a script for setting up a local development environment.
Technologies: Java, Spring Boot, SQL, Apache Kafka
Lead Back-end Developer
2017 - 2021
Simployer
- Led the creation of a future-ready back-end platform leveraging microservices architecture and DDD principles.
- Fostered infrastructure-as-code practices through projects utilizing Terraform and Ansible on AWS.
- Developed pipelines for both batch and live data recalculations to aid various applications, harnessing Airflow and Python.
Technologies: Java, Kotlin, Akka, Amazon Web Services (AWS), Terraform, Ansible, Apache Airflow, MongoDB, SQL, GitHub
Senior Back-end Engineer
2015 - 2017
Truecaller
- Created a service for handling uploads of users’ avatars using Scala and S3.
- Built a service for indexing user profiles using Scala, Kafka, Elasticsearch, and Cassandra.
- Fixed a Spark job for classifying mobile spam profiles.
Technologies: Scala, Java
Data Integration and Support Team Lead
2013 - 2015
RiskMatch LLC.
- Implemented numerous UI components and backing code for them.
- Applied service discovery capabilities for the back-end platform.
- Implemented the initial design for the internal data integration tool.
Technologies: Amazon Web Services (AWS)
Experience
Education
2001 - 2006
Master's Degree in Computer Engineering
Management, Information, and Business Institute - Ukhta, Russia
Skills
Libraries/APIs
Terragrunt
Tools
Apache Airflow, Terraform, Git, Ansible, GitHub
Languages
Java, SQL, Scala, Python, Snowflake, Kotlin
Paradigms
Functional Programming, Unit Testing
Platforms
Amazon Web Services (AWS), Linux, Google Cloud Platform (GCP), Apache Kafka
Storage
MySQL, MongoDB
Frameworks
Spring, Akka, Spring Boot
Other
File Conversion, Data Build Tool (dbt)
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