Denis Levchenko

Software Engineer

Da Nang City, Vietnam3 yrs 4 mos experience

Most Likely To Switch

Key Highlights

Proven experience in high-load API development.
Strong background in Ruby on Rails and PostgreSQL.
Eager to learn new technologies and share knowledge.

Stackforce AI infers this person is a Backend Developer with expertise in SaaS applications.

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Skills

Core Skills

Ruby On RailsPostgresqlRestful ApiBackend Development

Other Skills

APIBack-office solutionsBootstrapCI/CDCSSClouds (AWS)Docker composeGrapeHAProxyHTMLImportmapJSONJSON APIJavaScriptKafka

About

Experience: 4-5 years of experience. Moscow / Kazan, Russian Federation. Open to working full-time remotely, in-office, or hybrid. Willing to relocate if necessary. Motivation: I am seeking a strong team and challenging, ambitious technical tasks to grow as a professional. I am eager to learn new tools and approaches and share my experience. Key Technologies: Ruby, Ruby On Rails, RSpec (TDD), PostgreSQL, Docker, Redis, Sidekiq, RabbitMQ, Git, Kafka, SQL, MVC, Bootstrap, REST API, JSON API, CI/CD, Clouds (AWS) Soft Skills: Disciplined, responsible, well-organized. Continuously learning new technologies. Proactive. Open to feedback and ready to embrace the team and company culture. Processes: Agile, Daily, Plannings, Retros, Estimations, Groomings, Sprints (2w), Jira, GitLab, Github.

Experience

3 yrs 4 mos

Total Experience

1 yr 8 mos

Average Tenure

2 yrs 2 mos

Current Experience

Jumper media

Software engineer / Ruby on Rails developer

Apr 2024 – Present · 2 yrs 2 mos · United States · Remote

Developed a high-load API from scratch through to release and ongoing support. (Ruby on Rails, Sidekiq, Redis, PostgreSQL)
Gathered requirements, conducted analysis, and defined tasks for implementation.
Designed the service architecture with synchronization support for multiple API instances.
Configured CI/CD processes to automate build and deployment pipelines.
Deployed and configured a load balancer (HAProxy) to ensure system stability.
Set up and configured a web server (Nginx) for handling incoming traffic.
Designed an optimal database schema and implemented it in PostgreSQL.
Integrated an error monitoring and analysis system (Rollbar) to enhance product quality and reliability.

Ruby on RailsSidekiqRedisPostgreSQLCI/CDHAProxy+1

Rostelecom

Ruby on Rails Developer

Apr 2022 – Mar 2024 · 1 yr 11 mos · Moscow, Russia · Remote

Worked on integrating internal and external services. Developed RESTful API and gRPC.
Improved performance through: optimizing database queries (Psql, Indexes), data caching (Redis cache).
Worked on implementing new features.
Contributed to back-office projects (active admin / simple form / Bootstrap / Slim).
Conducted code reviews, wrote tests for new and existing functionality (TDD, RSpec).

RESTful APIgRPCPsqlRedis cacheTDDRSpec+3

Freelance

Back End Developer

Feb 2021 – Apr 2022 · 1 yr 2 mos · Kazan, Tatarstan, Russia · Remote

Worked directly with a long-term client. Gathered requirements, formulated tasks, assisted in developing technical specifications.
Led project development from inception to release and maintenance stage.
Developed back-office solutions. Implemented core project functionality and system features.

Back-office solutionsTechnical specificationsSystem featuresBackend Development