Responsibilities participating in developing plan and architecture for monolith to

microservices migration;

developing microservices as part of LoRaWAN Network Server

specification;

creating a fully-automated system for overall performance testing with

metrics and dashboards using AWS services;

troubleshooting network issues in LoRa stack and inside AWS VPC;

continuously improving system performance and stability (SQL,

networking, Akka actor system improvements);

Tools & Technologies : Java, Spring, Akka, Kafka, Kubernetes, AWS (EKS, Batch, RDS, MSK,

Timestream, CloudFormation, NLB, CodeBuild, CloudWatch, SQS,

Lambda, API Gateway, System Manager), Docker, LoRaWAN, IoT

Involvement Duration : 12 months

Responsibilities troubleshooting and fixing issues related to a network server or sensor

communications;

managing application AWS environment;

developing application monitoring and alarming system using AWS

services;

Tools & Technologies : Java, Spring Boot, Netflix stack, AWS (EC2, RDS, S3, Route 53),

Bitbucket pipelines

Involvement Duration : 2 months

Responsibilities : participating in the development of high-level architecture of the

application fully utilizing AWS infrastructure;

developing a data model for the application using DynamoDb;

designing and implementing CI/CD from scratch;

implementing DR for an application using Route53 health checks and

Blue/Green deployment;

taking part in implementing business logic and workflow using AWS

StepFunctions;

Tools & Technologies : Java 11, Dagger, Gradle, Python, AWS (Lambda, DynamoDb, SQS, S3,

Batch, ECS, S3, StepFunctions, Route53, CodePipeline, CodeDeploy,

CodeBuild, Secrets Manager, VPC, CDK), Jenkins

Involvement Duration : 6 months

Responsibilities : fully reworking CI/CD process and application to meet the customer

ecosystem requirements;

conducting knowledge transfer sessions for the teams on the customer

side;

investigation and implementing infrastructure changes to the application

be able to pass ‘permit to operate’ and ‘permit to production’ checks;

supporting the process of releasing the application into Production;

implementing performance tuning for the application;

implementing continuously data-import mechanism from on-premises

database;

Tools & Technologies : Java 8, Python, Groovy, Spring, AWS (Lambda, EC2, RDS, DynamoDb,

SNS, SQS, Glue, X-Ray, CloudWatch), Troposphere

Involvement Duration : 10 months

Responsibilities : implementing continuous deployment process according to the customer

infrastructure and requirements;

supporting the SRE teams during the application release process;

Tools & Technologies : Python, Bash, AWS (CloudFormation, Lambda, CodeBuild,

CodePipeline, SSM, KMS)

Involvement Duration : 4 months

Responsibilities : developing new business logic for a serverless application using AWS;

implementing Blue/Green deployment for AWS Lambdas using

CodeDeploy and hooks;

implementing data replication using DynamoDb global tables;

investigating and developing plans for data failover and failback

processes;

preparing the whole application for Production release;

Tools & Technologies : Java 8, Guice, AWS (Lambda, DynamoDb, S3, SSM, Route53,

CodePipeline), Troposphere, Terraform

Involvement Duration : 9 months

Responsibilities : creating CI & CD processes for customer service using Jenkins, Docker

and AWS services;

Tools & Technologies : AWS (ECS, Beanstalk, S3, Route53, SES, RDS, EC2), Jenkins, Docker,

MariaDb

Involvement Duration : 2 months

Responsibilities : developing the module for flight simulation of aircraft and helicopters;

working on road traffic behavior simulation using SUMO (Simulation of

Urban Mobility);

developing the module for simulate of physical movement of vehicles on

the ground using jMonkeyEngine;

developing and modifying existing JavaFX panels;

writing the unit tests;

Tools & Technologies : Spring, Hibernate, H2, Maven, SockJS, SUMO, Junit, Mockito

Involvement Duration : 4 months

Responsibilities : Development of the web-application using Spring MVC and JSP for

views;

Implementing integration with external service for cruise availability

check;

performing integration with exchange rates service for price calculations;

development an agent personal cabinet using REST API;

Tools & Technologies : Spring MVC, Hibernate, HQL, JSP, JSTL, JavaScript, CSS, Spring

Security, Tomcat, PostgreSQL

Involvement Duration : 6 months

Responsibilities : development of the simulation module of UAVs behavior, automatic

UAV route calculation module, air traffic management algorithms;

expending of the existing REST API calls;

working on communication between the server application and UAV

onboard application using a Socket connection;

working on communication between UAV onboard application and UAV

autopilot using MAVLink protocol (v1 and v2);

Tools & Technologies : Spring MVC, Hibernate, H2, Maven, Junit, Graphhopper

Involvement Duration : 10 months