Alex Apkhaidze, Developer in Tbilisi, Georgia
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Alex Apkhaidze

Verified Expert  in Engineering

Software Developer

Location
Tbilisi, Georgia
Toptal Member Since
November 14, 2017

Alex is a software architect and lead engineer with eight years of experience in software development, passionate about modern software architecture. He has a wide range of knowledge and experience managing all aspects of software development, from architecture design to implementation and deployment. Alex is an AWS certified solutions architect.

Portfolio

Nexar Ltd
Java, Back-end, Go, Microservices, DevOps, Concurrency, Distributed Systems...
Adamos
Keycloak, PostgreSQL, GraphQL, REST, Spring, Java, Code Review...
ZOOTCH (via Toptal)
Amazon Web Services (AWS), Git, Swagger, Flyway, REST, Vaadin, Hazelcast...

Experience

Availability

Part-time

Preferred Environment

Git, Docker, IntelliJ IDEA, Linux

The most amazing...

...thing I've coded is a memory optimized Red-Black tree that uses only one child's pointer in the parent node and calculates a second one's address dynamically.

Work Experience

Java Back-end Engineer

2021 - 2022
Nexar Ltd
  • Designed and implemented microservices for core systems.
  • Implemented custom testing software and conducted stress testing for a new platform.
  • Integrated external systems with our solutions, enhancing functionality and efficiency.
Technologies: Java, Back-end, Go, Microservices, DevOps, Concurrency, Distributed Systems, Multithreading, CI/CD Pipelines, Terraform, Kubernetes, Docker, gRPC, API Development, Apache Kafka, Amazon Web Services (AWS), Spring Boot, NoSQL, Integration, REST APIs, Amazon Simple Queue Service (SQS), RESTful Services, Load Testing, Scalability, Architecture, Cloud Architecture, Engineering

Senior Software Engineer

2019 - 2019
Adamos
  • Developed IoT marketplace for IoT enabled manufacturing machines.
  • Built a distributed system using microservices-based architecture and single sign-on (SSO).
  • Integrated external services such as CMS, subscription management platform, SendGrid.
  • Conducted thorough code reviews, ensuring code quality.
Technologies: Keycloak, PostgreSQL, GraphQL, REST, Spring, Java, Code Review, Source Code Review, Software Engineering, SQL, IntelliJ IDEA, APIs, Analysis, Task Analysis, Back-end Development, Distributed Systems, API Development, Back-end, Amazon Web Services (AWS), Spring Boot, NoSQL, Integration, REST APIs, RESTful Services, Spring Microservice, Scalability, Identity & Access Management (IAM), Engineering

Senior Software Engineer

2019 - 2019
ZOOTCH (via Toptal)
  • Built system for geolocation data processing and updates.
  • Provided REST API that allowed users to find nearby users based on time and location in real time.
  • Set up a highly scalable and secure back-end system on AWS.
  • Integrated Applozic and OneSignal services for mobile chat and push notifications.
  • Integrated Facebook login and Twilio text messaging services.
  • Developed management and monitoring web application for administrators.
Technologies: Amazon Web Services (AWS), Git, Swagger, Flyway, REST, Vaadin, Hazelcast, Spring, Java, Code Review, Source Code Review, Software Engineering, SQL, IntelliJ IDEA, JavaScript, APIs, Full-stack, Sublime Text, Analysis, Task Analysis, Back-end Development, Distributed Systems, API Development, Back-end, Spring Boot, NoSQL, Integration, REST APIs, PostgreSQL, RESTful Services, Scalability, Architecture, Cloud Architecture, Engineering

Senior Software Engineer

2018 - 2019
Exhale Enterprises (via Toptal Projects)
  • Built a middleware that integrated Exhale Spa and Hyatt systems.
  • Designed and implemented REST APIs for customer and administrator facing web applications.
  • Set up complex synchronization flows between the systems in an asynchronous multi-threaded manner.
  • Implemented job scheduling and management subsystem for clustered environment.
  • Integrated Stripe and Mindbody APIs.
  • Set up automated database migration.
Technologies: Google Cloud Platform (GCP), Git, Swagger, JSON Web Tokens (JWT), Flyway, SOAP, REST, Spring, Java, Code Review, Source Code Review, Software Engineering, SQL, IntelliJ IDEA, APIs, Sublime Text, Task Analysis, Back-end Development, API Development, Back-end, Spring Boot, Integration, REST APIs, PostgreSQL, RESTful Services, Scalability, Engineering

Senior Software Engineer

2018 - 2018
project44 (via Toptal)
  • Created and consumed RESTful and SOAP web services.
  • Integrated system with different freight shipping carriers for rating, estimates, and shipping.
  • Participated in the development of a real-time location monitoring system for the trucks having ELDs and GPS devices.
  • Processed and fed data from trucks' sensors into Kafka.
  • Wrote unit and integration tests.
  • Carried out code reviews.
Technologies: Gradle, Git, Mockito, JUnit, Jenkins, SOAP, REST, Apache Kafka, Docker, Spring, Java, Code Review, Source Code Review, Software Engineering, SQL, IntelliJ IDEA, APIs, Sublime Text, Analysis, Back-end Development, API Development, Back-end, REST APIs, RESTful Services, Cloud Architecture, Engineering

Senior Software Engineer | Team Lead

2016 - 2018
Product Savvy Georgia
  • Led the development of SaaS platform with a team of 5 engineers.
  • Delivered applications across the entire life cycle, from architecture design to implementation, testing and deployment.
  • Developed highly scalable system around event technology solutions using dockerized microservices.
  • Implemented back-end system for group riding, navigation and online communication/chat application using AWS infrastructure.
  • Designed, documented and implemented RESTful APIs. Integrated heterogeneous systems via SOAP and REST web services.
  • Created middleware with unified interface for mobile applications to manage PayPal, Apple Pay and Google Pay subscriptions.
  • Set up continues delivery and deployment pipeline using Jenkins. Pipeline as Code orchestrated automated testing, building, delivery and deployment in multiple environments.
  • Built the system for online and email reporting.
  • Wrote stored procedures in MySQL.
  • Implemented geolocation based push notifications.
  • Led daily stand-up meetings. Conducted interviews with Java developer candidates.
Technologies: Amazon Route 53, Smart Entry Services (SES), Internet of Things (IoT), Amazon Simple Notification Service (Amazon SNS), Amazon ElastiCache, Amazon Aurora, ECS, Amazon EC2, Apache JMeter, Hibernate, Apache Maven, JUnit, Bash, Git, REST, Microservices, Jenkins, Couchbase, MySQL, Docker, Spring, Java, Source Code Review, Code Review, Software as a Service (SaaS), Interviewing, Technical Hiring, Software Engineering, SQL, IntelliJ IDEA, HTML5, HTML, APIs, Full-stack, Sublime Text, Analysis, Task Analysis, Back-end Development, API Development, Back-end, Amazon Web Services (AWS), Integration, REST APIs, RESTful Services, Amazon Elastic Container Service (Amazon ECS), Amazon Simple Queue Service (SQS), Scalability, Architecture, Cloud Architecture

Senior Software Engineer

2014 - 2016
Global Stream Georgia
  • Designed architecture and implemented software for highly scalable electronic payments and billing system.
  • Integrated merchants in payments and billing system.
  • Developed software for international money transfer system. It was integrated with separate and different systems in several countries.
  • Built 'clearing' software for money transfer system.
  • Developed software for support and call-center.
  • Created E-wallet architecture.
Technologies: Oracle RDBMS, WildFly, Java EE, Source Code Review, Code Review, Software as a Service (SaaS), Interviewing, Technical Hiring, Software Engineering, Java, SQL, IntelliJ IDEA, JavaScript, HTML, HTML5, APIs, Full-stack, Sublime Text, Analysis, Task Analysis, Spring JDBC, Back-end Development, API Development, Back-end, Integration, REST APIs, Jakarta EE, JavaBeans, Architecture, Cloud Architecture

Analyst - Developer

2013 - 2014
Bank of Georgia
  • Created software for bank clients monitoring and management used by legal department.
  • Developed software for electronic payments monitoring.
  • Built software for electronic payments automation.
  • Integrated new payment channels in existing electronic payments system.
Technologies: Apache Tomcat, JBoss, Oracle RDBMS, Java SE, Software Engineering, Java, SQL, JavaScript, HTML, HTML5, APIs, Analysis, Task Analysis, Spring JDBC, Back-end Development, Back-end, Integration

Junior Analyst - Developer

2011 - 2013
Bank of Georgia
  • Developed software for electronic payments processing.
  • Built software for payments system management.
  • Created software for payments system support.
  • Supported software for payment self-service kiosks.
  • Integrated new payment services in self-service kiosks.
Technologies: JBoss, Oracle RDBMS, Java SE, Software Engineering, Java, SQL, HTML, HTML5, Analysis, Task Analysis, Spring JDBC, Back-end Development, Back-end

ZOOTCH

https://www.zootch.com
ZOOTCH is a unique smartphone app that lets you instantly communicate with people close by, even if they’re not in your contact list.

ADAMOS IIoT Marketplace

ADAMOS IIoT Marketplace for IoT enabled manufacturing machines.

Exhale Spa - World of Hyatt

Earn World of Hyatt points on fitness classes, spa therapies, and Exhale On Demand subscriptions. Use your World of Hyatt points for a fitness class, massage, or facial.

WolfPack

https://www.wolfpack.run/
WolfPack reinvents the group riding experience. Gives you ability to plan group rides, invite your pack, navigate together, and communicate, all from your Android or iOS device.

AVaStar

https://www.avastar.io/
AVaStar empowers venue teams to better self-manage Audiovisual/Event Technology Services by providing the structure, systems, and support to sell, coordinate, and deliver high-quality and reliable presentation technology services.

Census 2014, National Statistics Office of Georgia

Implemented full stack software, using Spring Boot, AngularJS, and MS SQL Server for census project.

Where Am I - Android App

http://wai.aleksandre.net
Easiest and fastest way to explore, save and share your location. Android app built by me.
2013 - 2015

Master's Degree in Computer Sciences

Tbilisi State University - Tbilisi, Georgia

2007 - 2011

Bachelor's Degree in Computer Sciences

Filiére Francophone en Informatique - Tbilisi, Georgia

2007 - 2011

Bachelor's Degree in Computer Sciences

Tbilisi State University - Tbilisi, Georgia

APRIL 2023 - PRESENT

AWS Certified Solutions Architect – Professional

Amazon Web Services

JANUARY 2020 - JANUARY 2023

AWS Certified Solutions Architect Associate

AWS

Libraries/APIs

JAX-RS, Spring REST, REST APIs, API Development, JAX-WS, JMS, Java Transaction API (JTA), JAXB, Java Servlets, Twilio API, Facebook Login, PayPal API, Stripe API

Tools

Apache Tomcat, Amazon Elastic Container Registry (ECR), AWS ELB, Amazon Elastic Container Service (Amazon ECS), Apache Maven, Git, Amazon Simple Email Service (SES), Amazon EBS, Docker Compose, Amazon ElastiCache, WildFly, Apache JMeter, SoapUI, Postman, Gradle, OneSignal, Angular CLI, GitHub, GitHub Pages, AWS IAM, IntelliJ IDEA, Sublime Text, Amazon Simple Queue Service (SQS), Jenkins, Amazon Simple Notification Service (Amazon SNS), Flyway, HSQLDB, Subversion (SVN), Kafka Streams, Keycloak, Jira, Terraform, Amazon Virtual Private Cloud (VPC)

Frameworks

Spring Boot, JavaBeans, Spring, JPA, AWS HA, Spring Security, Swagger, OAuth 2, Angular, Bootstrap 3, Hibernate, Vaadin, Jakarta Server Pages (JSP), Bootstrap, Spring MVC, Spring JDBC, Spring Microservice, JUnit, Mockito, JSON Web Tokens (JWT), JSF, AngularJS, gRPC

Languages

SQL, Java, Java 8, Java 7, Java 9, Java 11, Java 10, Go, XML, Bash Script, CSS, HTML5, JavaScript, HTML, Java SE, Bash, GraphQL

Paradigms

Object-oriented Programming (OOP), ACID, REST, API Architecture, Microservices, Agile Software Development, Scrum, Microservices Architecture, Design Patterns, Unit Testing, Dependency Injection, Database Design, Continuous Delivery (CD), Continuous Integration (CI), Continuous Deployment, DevOps, Load Testing

Platforms

Jakarta EE, Amazon EC2, Docker, Linux, Amazon Web Services (AWS), Java EE, JSE, AWS IoT, Android, Apache Kafka, AWS Lambda, JBoss, Google Cloud Platform (GCP), Mailgun, Google Cloud Engine, Kubernetes

Storage

Spring Data, MySQL, JSON, Amazon S3 (AWS S3), Spring Data JPA, Redis, PostgreSQL, JBoss Infinispan, SQLite, JavaDB, HSQL, H2, Hazelcast, Amazon Aurora, Databases, MongoDB, NoSQL, Amazon DynamoDB, Oracle RDBMS, Couchbase

Other

Hibernate Validators, Spring Web Services, Software Engineering, Software Architecture, AWS Auto Scaling, OOP Designs, Web Services, Spring Dependency Injection (DI), AWS Certified Solution Architect, Solution Architecture, Architecture, Back-end, Cloud, Mobile Back-end, Enterprise Java Beans (EJB), APIs, Back-end Development, RESTful Services, Scalability, Cloud Architecture, Engineering, Containerization, Containers, OAuth, Enterprise Software, Integration Testing, SOAP, CDI, Android Development, Elastic Load Balancers, Amazon API Gateway, Spring Cloud, Spring Session, API Integration, Integration, AWS DevOps, SOLID Principles, Code Review, Source Code Review, Software as a Service (SaaS), Full-stack, Task Analysis, Analysis, Custom Solutions, Distributed Systems, Identity & Access Management (IAM), ECS, Internet of Things (IoT), Smart Entry Services (SES), Amazon Route 53, Drip Marketing, Drip Email, Team Leadership, Message Queues, Interviewing, Technical Hiring, Concurrency, Multithreading, CI/CD Pipelines, Amazon RDS

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