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Othonas – Golang, Java, Docker, experts in Lemon.io

Othonas

From Greece (GMT+3)

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Back-end Web DeveloperSenior
Hire developer
8 years of commercial experience
Accounting
Cloud computing
Cybersecurity
Fintech
Healthtech
IoT
Enterprise software
Platforms
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Othonas – Golang, Java, Docker

Othonas is a skilled software engineer with a strong passion for research and a proven track record of success in the industries like enterprise software, cybersecurity and healthcare. With Senior expertise in Golang and a solid foundation in computer science, Othonas has established himself as a standout professional, holding a Bachelor's Degree in Computer Science. He brings to the table a range of strengths, including a deep understanding of memory management and experience with niche technologies.

Main technologies
Golang
5 years
Additional skills
Java
Docker
MySQL
Apache Kafka
Cloud development
Apache Tomcat
Spring Boot
Java EE
GitLab CI/CD
MongoDB
Kafka
PostgreSQL
Jenkins
ActiveMQ
NoSQL
SQL
Kubernetes
Amazon S3
Amazon EC2
AWS
REST API
K8s
DynamoDB
Serverless Computing
Protobuf
Ready to start
1st July
Direct hire
Potentially possible

Experience Highlights

Senior software engineer
Nov 2023 - Mar 20244 months
Project Overview

An invoicing platform to send digital invoices through Peppol.eu network

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Responsibilities:
  • Created low-level design documents for authentication and authorisation and implemented them using AWS serverless technologies
  • Designed and implemented a backend for frontend framework using rest APIS and lambda functions
  • Created the test design plan for the backend
  • Wrote Golang code for serverless architecture
  • Wrote Typescript code for infrastructure as code using AWS CDK
  • Design single table schema using Amazon DynamoDB
Project Tech stack:
Golang
Serverless Computing
DynamoDB
Senior Golang Software Engineer
Jul 2022 - Nov 20223 months
Project Overview

The primary objective of the Issuance API is to integrate the origination workflows from the Origin Platform to provide an automated issuance process from origination to direct market settlement within Clearstream.

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Responsibilities:
  • Created new platform features
  • Did bug investigation and fix
  • Provided code optimization
  • Tested write-up from BDD
Project Tech stack:
Golang
Kafka
Agile
MongoDB
BDD
Senior Back-End Engineer
Mar 2022 - Jul 20224 months
Project Overview

Changing the award-winning and most well-known attribute-based authorization framework, that of axiomatics, and making it cloud native.

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Responsibilities:
  • Optimized the company's CI/CD pipeline and achieved 20% faster builds
  • Created a monitoring framework to handle the company's servers
  • Did bug fixing
  • Provided code optimization
Project Tech stack:
Java
Jenkins
Senior Back-End Developer
Mar 2020 - Apr 20222 years
Project Overview

An integrated suite of tools that provides comprehensive cyber security risk detection and management for enterprise systems.

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Responsibilities:
  • Created microservices responsible for analyzing vulnerabilities of assets of the platform
  • Created microservices to handle the retrieval of new vulnerabilities from public data sources
  • Created a new domain-specific language to handle the propagation of vulnerabilities based on asset relationships
  • Designed and developed the progression and simulation engine for the company's cyber-range
  • Assisted in the creation of cyber-security learning material
  • Was responsible for the Authentication and Authorization aspects of the platform
Project Tech stack:
Spring Boot
Golang
GitLab CI
CD
K8s
Agile
PostgreSQL
Senior Backend Software Engineer
Mar 2020 - Feb 20221 year 11 months
Project Overview

The platform aims to integrate heterogeneous sensors, assistive medical and mobile devices to enable the continuous data collection from the everyday life of older people, which will be analyzed to obtain the evidence needed to offer personalized interventions promoting their healthy and independent living

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Responsibilities:
  • Created the pseudo anonymization framework for the framework needs. Achieved 100% integration without changing legacy code
  • Created microservices for patient registration and association with medical data and devices
  • Was responsible for the Authentication and Authorization of the platform.
  • Did integration with k8s and GitLab CI/CD pipelines
Project Tech stack:
Golang
Java EE
GitLab CI
CD
PostgreSQL

Education

2014
Computer Science
Bachelor

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