Software Engineer
2021 - PRESENTBytelogics- Collaborated on an ETL python project (Meltano) to download Facebook ads data.
- Cooperated a little on the iOS app. Learned mobile fundamentals.
- Implemented a C# cross-platform mobile app to measure the hearing aid’s wearing time and pass it to the main hear.com app with basic UI.
Technologies: Java, Python, ETLSoftware Engineer
2020 - 2021Swedbank- Researched how the bank could implement a new search project via Elasticsearch with all size estimations.
- Integrated OpenAPI (Springdoc, Swagger, and OpenAPI Generator).
- Implemented distributed cache (Hazelcast), migrated from Ehcache.
Technologies: Spring, JavaSoftware Engineer
2018 - 2020Monese- Gave a talk on Event Sourcing & CQRS with Axon Framework internally and at a local conference. While attending the AxonIQ conference, arranged a meeting with our CTO and their founder which resulted in the company migrating to these patterns.
- Achieved a 50% performance increase for average web response time by redesigning and reimplementing a big portion of the code.
- Assisted to onboard and mentor a new junior Java developer.
- Presented on API development which changed the company standard from REST to GraphQL.
- Owned the microservice from writing code and deploying to production.
Technologies: Spring, JavaSoftware Engineer
2017 - 2018ORION Innovation- Learned Java stack from scratch while working long hours.
- Took the initiative and wrote 100 pages of missing documentation for an old project.
- Implemented and maintained the main microservice of 20,000 lines of code and its database schema.
- Implemented a complex data collection service with dynamic custom XML configuration.
Technologies: Spring, Java
Sam Kruglov
Software Developer in Miami, FL, United States
Member since January 6, 2021
Sam is a senior Java back-end engineer with experience building synchronous, reactive, and event-driven distributed systems. He has achieved a 50% performance increase for web response times by redesigning the code. Sam has mentored junior developers, spoken at the DevClub conference, and created fast, flawless products through outstanding optimization. As a clean code evangelist, he enjoys taking ownership of every project and delivers maintainable and well-tested solutions that last.
Sam is now available for hire
Portfolio
- BytelogicsJava, Python, ETL
- SwedbankSpring, Java
- MoneseSpring, Java
Availability
Part-time
Preferred Environment
Amazon Web Services (AWS), Kotlin, Java, Git, Spring, AWS
The most amazing...
...result I've achieved involved turning around the company architecture by advocating Event Sourcing and CQRS for a reactive microservices experience.
Employment
Experience
- Basic Users and Roles APIhttps://github.com/Sam-Kruglov/basic
A Java and Spring-based API for managing users and roles. The data is stored in a relational database in which schema is versioned. It's accessed via an ORM framework with a cache layer. The HTTP API is validated by JSR 380 and secured with JWT. OpenAPI is used for API documentation, client SDK generation (which is used for integration tests), and exposing Swagger UI.
Skills
Languages
GraphQL, SQL, Kotlin, Python, Java, Bash, HTML, CSS, JavaScript, GroovyFrameworks
Spring, Spring Boot, JPA, Spring MVC, Hibernate, Axon Framework, Spring Security, Swagger, JSON Web Tokens (JWT), JUnit, MockitoLibraries/APIs
OpenAPI, REST APIs, AssertJTools
IntelliJ IDEA, Git, Flyway, Maven, Jenkins, SlackParadigms
REST, Agile, Scrum, Testing, Event Sourcing, CQRS, Test-driven Development (TDD), Reactive Programming, ETLOther
Software Engineering, GitFlow, AWS, Reactive Streams, Validation, Hibernate ValidatorsPlatforms
Docker, Amazon Web Services (AWS), Unix, LinuxStorage
Hazelcast, Spring Data JPA, CacheIndustry Expertise
Security
Education
- Bachelor's Degree in Computer Science2013 - 2018Nizhny Novgorod State Technical University n.a. R.E. Alekseev - Nizhny Novgorod, Russia
