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Ion – Java, Microservices, Spring Boot, experts in Lemon.io

Ion

From Spain (GMT+2)

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Back-end Web DeveloperSenior
Hire developer
14 years of commercial experience
Consulting services
Telecommunications
Veterinary services
Mobile apps
Platforms
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Ion – Java, Microservices, Spring Boot

Ion is a senior-level developer with extensive experience spanning various roles in the industry. With a solid background and expertise, he excels in guiding and leading teams. His versatile career includes contributions to both large-scale enterprises and small startups, offering valuable insights into diverse tech stacks. Ion's strengths lie in his excellent grasp of REST API design, transaction levels, and core Java concepts like immutability. His expertise in architecture is solid, making him a valuable asset to any project.

Main technologies
Java
12.5 years
Microservices
6 years
Spring Boot
10 years
AWS
4 years
Additional skills
Redis
SQL
Kubernetes
Kafka
GraphQL
Docker
PostgreSQL
REST API
OAuth
Cassandra
GWT
Oracle
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Tech Lead
Mar 2022 - Jul 20224 months
Project Overview

This is a marketplace for matching assignments and consulting services.

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Responsibilities:
  • Established the development processes;
  • Set the tech strategy;
  • Architected and implemented the Back-end;
  • Led technical designs and conducted code reviews.
Project Tech stack:
Spring Boot
Java
AWS
PostgreSQL
OAuth
Technical Lead
Jan 2022 - Mar 20221 month
Project Overview

This platform's experienced, licensed veterinarians make it easier for clients and pets by visiting their homes. In the animal's safe environment, the veterinarian makes a clinical assessment as a basis for continued treatment. Clients are always told what the proposed treatment will cost before the measures are taken. The platform works with most major insurance companies, and clients' pet insurance covers the visit and treatment.

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Responsibilities:
  • Architected and implemented the Back-end;
  • Led technical designs and conducted code reviews;
  • Established the development processes.
Project Tech stack:
Spring Boot
PostgreSQL
OAuth
Tech Lead
Aug 2021 - Jan 20225 months
Project Overview

This is a group of companies focused on products for children and personal hygiene.

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Responsibilities:
  • Set the tech strategy;
  • Led technical designs and conducted code reviews;
  • Established the development processes.
Project Tech stack:
Spring Boot
PostgreSQL
Redis
OAuth
Tech Lead
Sep 2017 - Aug 20213 years 11 months
Project Overview

This is a cloud-native, open, and microservices-based BSS product solution for a chain of companies. This product's Flex technology redefines how CSPs run their business and operations for a new level of autonomy, faster time to market, and flexibility to adapt to changing business needs.

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Responsibilities:
  • Designed and led the BPMN (Business Process Model and Notation) product component and related microservices implementation;
  • Managed a distributed RnD team of developers and architects from Ukraine, Finland, and Sweden, including EMP setting and performance review;
  • Mentored teams during the transition to Agile (SCRUM/ Kanban) methodology;
  • Led the transition to an event-driven architecture.
Project Tech stack:
Java
Spring Boot
PostgreSQL
Cassandra
Redis
Kubernetes
Kafka
Microservices
REST API
GraphQL
Team Lead
May 2013 - Sep 20174 years 3 months
Project Overview

B2B product solution for the biggest telecommunications companies worldwide.

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Responsibilities:
  • Led implementation and delivery of CRM, OSS, and BSS components;
  • Managed a distributed team from Ukraine, Belarus, and India.
Project Tech stack:
Java
Spring Boot
Oracle
GWT
REST API

Education

2015
Information Technology
Master's

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