# Eugene Yavaev Eugene Yavaev is a remote worker on Himalayas, Senior Elixir Engineer at Yalantis, based in Ukraine. Source: https://himalayas.app/@eugeneyavaev ```text Senior Elixir Engineer at Yalantis, where I implemented healthcare APIs, HMAC authentication, and equipment outage alerting. ``` | Detail | Value | | --- | --- | | Availability | Looking for a job | | Location | Ukraine | | Authorized to work in | Ukraine | | Salary expectations | 67k+ USD | | Job categories | Elixir Engineer, Erlang Developer, Backend Engineer, CTO | | Skills | Elixir, Erlang, Erlang OTP, Phoenix, Back end API development, Microservices, Distributed Systems, GraphQL, PostgreSQL, database performance optimization, Database Design, Kafka, RabbitMQ, Absinthe | ## About ```text At Yalantis, I designed and implemented an API ecosystem for a healthcare service, along with HMAC request verification and JWT lifecycle management. I also overhauled access management and added alerting metrics to detect physical equipment outages. On another Yalantis healthcare contract, I optimized database performance, partitioned the largest table, and integrated database replication. I also audited REST API and Kafka data flows for latency bottlenecks. At Self-employed, I worked on my crowdfunding project, building it from scratch and integrating payment systems. At Netguru, I implemented reusable components for insurance API services and contributed to technical architecture, tests, CI, mentoring, and code reviews. Across projects in invoice processing, finance, healthcare, education, and CRM, I’ve developed Elixir and Erlang backend services, APIs, and microservices. Earlier work included building backend applications from scratch and tuning a ticket-search service described as handling requests in under 200 ms. ``` ## Experience ### Senior Elixir Engineer Yalantis. May 2026 - Sep 2026 ```text Designed and implemented an API ecosystem for a healthcare project, including authentication with HMAC-signed requests and JWT lifecycle management. Overhauled access management and implemented alerting metrics for equipment outages. ``` Skills: Elixir, Phoenix, Live-View, ExUnit, Oban, PostgreSQL, MQTT, Prometheus ### Senior Erlang Engineer Company name under NDA. May 2025 - Aug 2025 ```text Maintained existing codebase, migrated legacy monoliths to microservices, and provided architectural analysis and system design. Supported release builds, deployments, CI, and code reviews. ``` Skills: Erlang-OTP, Cowboy, RabbitMQ, Redis, Kubernetes, Docker, Helm ### CTO Self-employed. Feb 2024 - Apr 2025 ```text Built a crowdfunding project from scratch, including domain analysis, payment integration, API design, deployment, and testing. Coordinated with front-end/UI team. ``` Skills: Elixir, Phoenix, Absinthe, PostgreSQL, Docker ### Senior Elixir Engineer / Mentor Netguru. Jun 2023 - Jan 2024 ```text Implemented and maintained a bootstrapper for company projects, designed core components, and participated in global technical architecture. Wrote behavior tests, supported CI, and mentored developers. ``` Skills: Elixir, Phoenix, Absinthe, ExUnit, StreamData, PostgreSQL, Jenkins, Docker, Helm ### Senior Elixir Engineer / Lead HBM (former Propell Minds). Sep 2021 - Nov 2022 ```text Implemented a data processing API service in a distributed microservice environment, maintained financial computations codebase, and integrated with third-party financial data providers. Supported document export gateways. ``` Skills: Elixir, Phoenix, Absinthe, Data-Loader, Oban, ExUnit, Live-View, PostgreSQL, GitHub-CI ### Senior Elixir Engineer NCube Ltd. Jan 2021 - Sep 2021 ```text Worked on codebase to circulate onboarded clients' data across system services, supported microservices interaction via MQ, and designed GraphQL-based API for mobile clients. Maintained legacy core services. ``` Skills: Elixir, Phoenix, Absinthe, Broadway, Kafka, Protobuf, PostgreSQL, Gitlab-CI, AWS ### Senior Elixir Engineer / Mentor Elixirator. Sep 2020 - Jan 2021 ```text Developed a GraphQL API service for a CRM system from scratch, including database and protocol design. Wrote behavior tests, supported CI, and mentored developers. ``` Skills: Elixir, Phoenix, Absinthe, Relay, ExUnit, PostgreSQL, GitHub-CI, Docker ### Senior Elixir Engineer StrongSD GmbH. Jan 2020 - Sep 2020 ```text Encoded probabilistic formulas with Elixir, optimized mathematical computations, and modeled user sessions as processes and state machines. Built admin reports, statistics, and analytic tools. ``` Skills: Elixir, Phoenix, Helm, PostgreSQL, Google-Cloud-Platform ### Senior Elixir Engineer Very Big Things. Jun 2019 - Jan 2020 ```text Collaborated on creating company's Elixir development standards, implemented backend for video recording, and designed and built a project from scratch as an example for future projects. ``` Skills: Elixir, Phoenix, Absinthe, Relay, ExUnit, PostgreSQL, CircleCi, Docker, Heroku, S3, Amazon-Cloudfront ### Senior Elixir Engineer Starbuildr. Dec 2017 - Jun 2019 ```text Implemented backend for chat and conversation rooms, added localization/internationalization support, and implemented push notifications for multiple platforms. Built a sophisticated logging system. ``` Skills: Elixir, Phoenix, Absinthe, ExUnit, PostgreSQL, Elasticsearch, Docker-Cloud, S3 ### Elixir Developer Level 2 Derivco Ipswich. Aug 2017 - Nov 2017 ```text Designed and implemented a formulas and validation rules runner backend application to calculate bet limits for different countries. Optimized computational resource allocation. ``` Skills: Elixir, Cowboy, Ranching, Maru, Mnesia, RabbitMQ, Gitlab-CI ### Elixir Engineer Starbuildr. Oct 2016 - Sep 2017 ```text Migrated a project from PHP/NodeJS/Nginx/Varnish/MongoDB to Elixir/MySQL, added localization support, and integrated with third-party social platforms and business messengers. ``` Skills: Elixir, Phoenix, GenStage, ExUnit, Uberauth, MongoDB, MySQL, Docker-Cloud, S3 ### Elixir Engineer Adoriasoft. Jun 2016 - Sep 2017 ```text Supported and modified existing codebase and database, built a separate authorization server, and communicated with customers. ``` Skills: Elixir, Phoenix, PostgreSQL, JSON:API, Travis-CI, EC2 ### Senior Backend Engineer [Provectus](https://himalayas.app/companies/provectus). Mar 2015 - Apr 2016 ```text Developed backend for a pediatric mobile application, implemented protocols, developed web UI for admin panel, and handled deployment. ``` Skills: PHP, JavaScript, LAMP-Stack, Yii-2, Braintree, DrChrono ### Backend Developer Senturia. Aug 2012 - Nov 2014 ```text Developed multiple backend applications from scratch, including an air flight tickets metasearcher, a concurrent bot parser, a call-center management system, and a CRM system. Implemented monitoring, logging, and statistics subsystems. ``` Skills: Erlang-OTP, Cowboy, :Xmerl, PostgreSQL, RabbitMQ, CouchDB, Rebar, PHP, JavaScript, MySQL, JSX, Exomler, Yii-2, AngularJS, Asterisk, MongoDB, MessagePack, Perl, C, CPAN, AGI, Glibc, Apache ## Education ### Odesa State Academy of the Refrigeration Master of Engineering, Automatic Control of Technological Processes. 2005 - 2010 ```text Master of Engineering in Automatic Control of Technological Processes from Odesa State Academy of the Refrigeration, Ukraine, from 2005 to 2010. ``` ## Tech stack - Google Cloud Platform - Gleam - Helm - Jenkins - CircleCI - GitLab CI - MySQL - PostgreSQL - MongoDB - Couchbase - CouchDB - Relay - Intercom - Redis - AngularJS - JavaScript - PHP - Perl - C - ClojureScript - Scala - Elixir - Kafka - RabbitMQ - MQTT - Linux - Heroku - GraphQL - JSON API - Elasticsearch - Protobuf - MessagePack - Git - Docker - Varnish - NGINX - Cowboy - Braintree - Erlang - Erlang/OTP - Make - Mnesia - asdf - Oban - Asterisk - AWS To contact Eugene, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire). ## People also viewed - [Sergei Kolomiichuk](https://himalayas.app/@codegust): Software Architect / Fullstack Developer, Personal - [Vitaliy Morarian](https://himalayas.app/@vitaliymorarian): Scala Software Engineer, Giphy - [Vitalii Mykhailov](https://himalayas.app/@vitaliimykhailov): Backend Developer, Nokia - [Bogdan Kolesnyk](https://himalayas.app/@bogdankolesnyk): Senior Backend Engineer, Shelf - [Николай Юрченко](https://himalayas.app/@0005905): Senior Java Backend Engineer, iGaming Platform - [Alex S](https://himalayas.app/@alexs5): Backend Tech Lead, Universe - [Serhii User](https://himalayas.app/@serhiiuser7): Founder and Principal Engineer, Verstat - [Vitaly Panchuk](https://himalayas.app/@vitalypanchuk): Development Lead, StrongSD - [Dmytro Smyrnov](https://himalayas.app/@dmytrosmyrnov): Independent Engineering, Sabbatical - [Vasyl Chyypesh](https://himalayas.app/@vasylchyypesh): Senior Backend Engineer, Codify