Candidates 77
$4000 / mo
≈ $48000 / year net
Clojure software engineer / clojure data engineer
Ukraine · Kyiv · 5 years of experience · Upper-Intermediate ·Published 18 March
Ukraine · Kyiv · 5 years of experience · Upper-Intermediate ·Published 18 March
$6500 / mo
≈ $78000 / year net
Scala Engineering Lead
Ukraine · Lviv · More than 10 years of experience · Upper-Intermediate ·Published 4 April · In passive search
Ukraine · Lviv · More than 10 years of experience · Upper-Intermediate ·Published 4 April · In passive search
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$5000 / mo
≈ $60000 / year net
Scala | BigData Developer
Ukraine · 5 years of experience · Upper-Intermediate ·Published 28 March
Ukraine · 5 years of experience · Upper-Intermediate ·Published 28 March
• Scala, BigData, Spark, GeoJson
• AWS
• ScalaTest
• RDMS ( Oracle DB, PostgreSQL, SQL Server )
• NoSQL ( MongoDb, DynamoDB )
• Git ( GitHub, GitLab )
• Build tools ( Maven, sbt )
$6500 / mo
≈ $78000 / year net
Scala developer
Ukraine · 6 years of experience · Advanced/Fluent ·Published 19 April
Ukraine · 6 years of experience · Advanced/Fluent ·Published 19 April
Improving Spark job performance, identifying and eliminating bottlenecks, profiling service, monitoring it's health, resolving issues
$5000 / mo
≈ $60000 / year net
Senior Java Developer
Ukraine · 6 years of experience · Advanced/Fluent ·Published 8 April
Ukraine · 6 years of experience · Advanced/Fluent ·Published 8 April
With a strong engineering background, I possess in-depth expertise in Java, Scala, NoSQL, SQL, Spring, Hibernate, ELK, Vert.x, Docker, Jenkins, AWS. I excel in creating efficient and scalable solutions while ensuring optimal performance and reliability. Throughout my career, I have successfully delivered robust software applications that meet stringent quality standards and client requirements.
I am a dedicated professional who thrives in fast-paced environments, collaborates effectively within cross-functional teams, and continuously seeks to expand my knowledge and skills.
$6000 / mo
≈ $72000 / year net
Java/Scala Software Engineer
Ukraine · Ivano-Frankivsk · 5 years of experience · Upper-Intermediate ·Published 27 March · In passive search
Ukraine · Ivano-Frankivsk · 5 years of experience · Upper-Intermediate ·Published 27 March · In passive search
Сommercial experience - 5 years
Responsibilities:
- developing service callbacks
- data processing implementation
- optimization restriction issues
- updating performance using aggregated tiles
- code review
- bug fixing
- integrating new features
- performance upgrading
- service integration
- Elasticsearch authorization
- unit-testing
Tools & Technologies: Java 8-17, Scala 2.12-2.13, Kafka, Apache Spark, Play, NodeJs, MySQL, MariaDB, PostgreSQL, Spring, GraphQL, JUnit, Mockito, AWS, Google Cloud, LaunchDarkly, Docker, Protocol Buffers, Harp Native, Mapshaper, Harp4web
$5000 / mo
≈ $60000 / year net
Scala dev, Deep Learning Engineer, C++ dev
Ukraine · Kyiv · More than 10 years of experience · Upper-Intermediate ·Published 28 March
Ukraine · Kyiv · More than 10 years of experience · Upper-Intermediate ·Published 28 March
Wix.com
Sep 2021 - Feb 2023
• Design infrastructure service for structural, full text and semantic search using Vespa
• Implement PII solution
• Extend system linguistic with new languages
• Implement stateful and resilience batch operation
• Develop stop and slur words capabilities
• Refactoring and rewrite service on new API
• Add new functionality to feeder and searching services
Lohika
2018 - 2021
Deep Learning EngineerDeep Learning Engineer
• Custom low level microcontroller software development for machine deep learning applications
• Neural network ML low level algorithm optimization
• Integration application with tensorflow framework as computation device
• Custom low level microcontroller software development for machine deep learning applications
• Neural network ML low level algorithm optimization
•Integration application with tensorflow framework as computation device
DLT/Blockchain & Dapp ScientistDLT/Blockchain & Dapp Scientist
• Design supplychain framework for enterprise industry
• Make HyperLedger Fabric MVP project
• Organize work for people on bench
• Make company internal trainings and sharing DLT expertise
Blockchain Team
MinexSystems
Jun 2017 - Sep 2018
• Design new cryptocurrency fork from Bitcoin
• Improvement of atomic swap protocol
• Design DEX
• Management RnD blockchain team
• Recruiting and teaching new personal
• Technical support of community, miners, pool owners
C++ Developer
CyberVision, Inc
2016 - 2017
• Develop embedded analytic system for devices
• Design reactive architecture for real time data processing
• Support current IoT project
C/C++ Java Embedded Software Developer
Intro Pro
2013 - 2016
• Develop architecture prototype for IP TV application
• Develop architecture for streaming player
• Writing functional for STB
• Satellite technology
• Communication between server/client STBs GUI
Lead Engineer
Samsung
2013
• Writing the desktop debug program for a Samsung TV set project
• Writing a simple ORM system using a Sqlite
• Creation the application database schemas and develop a complex client algorithm for providing high speed as in NoSql
• Design concurrent algorithms running in a multithreaded environment
• Design ADT for refactoring and optimization a critical code section
Deep Learning Specialization
Coursera
Issued Jul 2021
Credential ID MRK52WXCN6F8
Sequence Models
Coursera
Issued Jul 2021
Credential ID 3Q3ZNUP29XYD
Convolutional Neural Networks
Coursera
Issued Jun 2021
Credential ID 8HQPFMTBHGLS
Improving Deep Neural Networks: Hyperparameter Tuning, Regularization and Optimization
Coursera
Issued Jun 2021
Credential ID LWTU7PFZEC7Q
Structuring Machine Learning Projects
Coursera
Issued Jun 2021
Credential ID YUCMWBEKZS4C
Neural Networks and Deep Learning
Coursera
Issued May 2021
Credential ID LU9C8ZNJKV69
$5400 / mo
≈ $64800 / year net
Principal Scala Engineer
Ukraine · Kyiv · 8 years of experience · Upper-Intermediate ·Published 14 April · In passive search
Ukraine · Kyiv · 8 years of experience · Upper-Intermediate ·Published 14 April · In passive search
- developed the scalability mechanics of the service by using Argo Workflows instead of the fixed number of the running pods at Kubernetes. Now, the service does utilize resources only under the load, and it is able to scale down from 104 CPUs/416 Gb (13 big pods) to 8 CPUs/5Gb (5 small pods) at the idle state. That helped to reduce the payment for a cloud by using 8% of cluster resources at idle state.
- reworked the health check for service. I used the internal Grafana/Prometheus for a monitoring instead of the exposed Health-Check Endpoint (AWS ELB + Nginx) and Catchpoint call. That helped to reduce the maintain payments for the infrastructure.
- implemented a set of Monitoring Panels at Splunk and Grafana. That helped to speed up the debug process at On-call incidents.
- fixed the excessive resource allocation per Kubernetes pods. I performed the load testing and collected Grafana metrics about resources. It helped to match the resource allocation to the real usage, so the service to be able to run 120 Kubernetes pods in parallel instead of 60 pods using the same cluster size
- worked on increasing the test coverage for Scala code. I used Scalatest and ScalaMock to increase the coverage from 10% to 80%.
- worked on implementing GitLab CI/CD pipelines for automating E2E test and automated deployments using Helm chart.
- covering on-call hours when it was night for the USA team (10AM-2PM UTC)
$5000 / mo
≈ $60000 / year net
Scala Developer
Ukraine · Kyiv · 10 years of experience · Upper-Intermediate ·Published 1 April
Ukraine · Kyiv · 10 years of experience · Upper-Intermediate ·Published 1 April
Have a 2+ years of commercial Scala development experience also have experience work with Kotlin
Working experience with NoSQL(Cassandra, Redis) and RDBMS(PostgreSQL, MySQL, SQLite)
Hands on experience with Akka and Spark
Experience with using JUnit, ScalaTest, Mockito, PowerMock & WireMock for create unit and integration tests
$5500 / mo
≈ $66000 / year net
Java/Scala Software Engineer
Ukraine · Kyiv · 6 years of experience · Upper-Intermediate ·Published 19 April · In passive search
Ukraine · Kyiv · 6 years of experience · Upper-Intermediate ·Published 19 April · In passive search