Angelos Konstantilieris

Full Stack Engineer

Greece2 yrs 4 mos experience

Most Likely To Switch

Key Highlights

Expert in building scalable applications with TypeScript.
Proficient in integrating complex back-end systems.
Strong focus on performance optimization and clean architecture.

Stackforce AI infers this person is a Full-Stack Developer specializing in SaaS solutions with a focus on scalable applications.

Contact

Skills

Core Skills

ReactJavascriptApplication DevelopmentWorkflow Management

Other Skills

BootstrapIonicNode.jsTypeScriptSequelizePostgreSQLGraphQLAWSDHTMLXApollo GraphQLAmazon Web Services (AWS)Ionic FrameworkBig DataReact NativeFirebase

About

Full-stack TypeScript developer building CRMs, booking systems, and multi-tenant platforms. I work across React, Next.js, Node.js, and NestJS to create scalable, intuitive applications with clean architecture and real-world reliability. My focus is turning complex requirements into simple, high-performing software.

Experience

Lgmar software

Fullstack Typescript Developer

Nov 2025 – Present · 5 mos · Athens, Attiki, Greece

I work as a Full-Stack TypeScript Developer at LG-MAR, building and maintaining OMNi, a multi-tenant enterprise email and communication platform used by maritime clients to manage operational correspondence at scale.
Within OMNi, I am responsible for the design and implementation of the OMNi AI Assistant — an agentic system that helps users navigate, understand, and act on large volumes of maritime email data efficiently and safely.

ReactJavaScript

Freelance (self employed)

Full Stack Engineer

Jan 2025 – Present · 1 yr 3 mos

Motion hellas ltd.

Full-stack Developer

Dec 2024 – Oct 2025 · 10 mos · Athens, Attiki, Greece · Hybrid

Motion Hellas
December 2024 – Present
Developing Scalable Solutions: Design and implement robust, scalable web applications for managing building systems, leveraging advanced technologies like React, Bootstrap, and Ionic for intuitive, responsive front-end interfaces.
End-to-End Development: Build and maintain comprehensive solutions, integrating back-end systems with Sequelize, PostgreSQL, and TypeScript, ensuring data consistency and efficient workflows.
API and GraphQL Integration: Develop and integrate GraphQL APIs using Apollo Client to enable efficient data querying and seamless interaction between front-end and back-end systems.
Cloud Infrastructure: Utilize Amazon Web Services (AWS) for deploying and scaling applications, ensuring reliability and performance under varying workloads.
Globalization and Localization: Implement multi-language support using i18next to deliver applications tailored to diverse user bases.
Performance Optimization: Focus on optimizing application performance by utilizing tools such as React Table for efficient data display and Lodash for streamlined operations.
Automation and CI/CD: Manage deployment pipelines with Serverless Framework, automating build and deployment processes for both development and production environments.
Code Quality and Collaboration: Ensure high code quality by adhering to best practices in ESLint, Prettier, and type-safe development with TypeScript, while participating in collaborative reviews and agile workflows.
Technologies and Tools:
Front-End: React, Bootstrap, Ionic, Styled-Components, React Icons
Back-End: Node.js, TypeScript, Sequelize, PostgreSQL, GraphQL
APIs: Apollo Client, REST, GraphQL
DevOps and CI/CD: AWS, Serverless Framework, CloudFront, S3
Utilities and Libraries: Lodash, ExcelJS, Axios, Formik, Moment.js, React Toastify