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I'm Sofia Baltzi, a software engineer with a passion for building reliable, user-friendly applications. I enjoy working across the full stack—from frontend experiences with React and Angular to robust backend services in C#, .NET, and REST—across banking, postal services, and research domains. Currently based in Zürich, I value collaboration in Agile teams, continuous learning, and delivering value to users. In my spare time I mentor women in tech and contribute to community tech spaces.…I'm Sofia Baltzi, a software engineer with a passion for building reliable, user-friendly applications. I enjoy working across the full stack—from frontend experiences with React and Angular to robust backend services in C#, .NET, and REST—across banking, postal services, and research domains. Currently based in Zürich, I value collaboration in Agile teams, continuous learning, and delivering value to users. In my spare time I mentor women in tech and contribute to community tech spaces.

Sofia Baltzi

Full Stack Developer, Web Developer, Front-End Developer, +3

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I'm Sofia Baltzi, a software engineer with a passion for building reliable, user-friendly applications. I enjoy working across the full stack—from frontend experiences with React and Angular to robust backend services in C#, .NET, and REST—across banking, postal services, and research domains. Currently based in Zürich, I value collaboration in Agile teams, continuous learning, and delivering value to users. In my spare time I mentor women in tech and contribute to community tech spaces.…I'm Sofia Baltzi, a software engineer with a passion for building reliable, user-friendly applications. I enjoy working across the full stack—from frontend experiences with React and Angular to robust backend services in C#, .NET, and REST—across banking, postal services, and research domains. Currently based in Zürich, I value collaboration in Agile teams, continuous learning, and delivering value to users. In my spare time I mentor women in tech and contribute to community tech spaces.

Available to hire

I’m Sofia Baltzi, a software engineer with a passion for building reliable, user-friendly applications. I enjoy working across the full stack—from frontend experiences with React and Angular to robust backend services in C#, .NET, and REST—across banking, postal services, and research domains.

Currently based in Zürich, I value collaboration in Agile teams, continuous learning, and delivering value to users. In my spare time I mentor women in tech and contribute to community tech spaces.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Greek, Modern

Fluent

English

Fluent

French

Beginner

Spanish; Castilian

Beginner

German

Beginner

Work Experience

Software Engineer at COSMOS Business Systems (Remote)

February 1, 2025 - Present

Developed an in-house document management platform; frontend stack included React, JavaScript, DevExtreme, CSS, HTML, and UI/UX work; implemented authentication and built features to support Cyprus Post’s postal services and products.

Software Engineer at Alpha Bank via UniSystems (Kalithea, Greece)

January 1, 2025 - October 25, 2025

Core Banking System Project: UI and API development to facilitate frontend-backend communication; ported bond/stocks and other transactions to Angular, Telerik UI, and .NET Core; implemented a horizontal file upload component (client-side).

Software Engineer (Full-Stack) at Interamerican via Syntax (Cholargos, Greece)

January 1, 2020 - October 25, 2025

Worked on MyAccount project (mostly frontend) for insurance contracts and accounts; improved UI consistency using Sass for Anytime Cyprus, supported contract-related functionality (auto pay, insurance coverages).

Software Engineer at ATHENA - Research and Innovation Center (Maroussi, Greece)

December 31, 2018 - October 25, 2025

OpenAIRE projects providing e-infrastructure for researchers. Extended user notification/subscription functionality (Angular 4 and UIKit 3). Designed and implemented a unified login portal with third-party logins; used in 35 countries and ~20 websites (Zenodo) with RESTful services and LDAP + PostgreSQL data layer; OpenID Connect authentication.

Web Development & UI/UX Design Intern at Centro de Estudios B.N.C. (Granada, Spain)

July 31, 2015 - October 25, 2025

Redesigned the Center’s website, produced mockups, and addressed user feedback; identified database schema shortcomings and suggested improvements.

Web Development & Digital Marketing Intern at Means4/NexuSlab (Cholargos, Greece)

September 30, 2014 - October 25, 2025

Designed and implemented a new e-shop using OpenCart with custom themes and modules; updated existing e-shops and conducted social media promotion and SEO.

Software Engineer at Cosmos Business Systems (Remote)

February 1, 2025 - Present

Contributed to an in-house document management platform using React, JavaScript, DevExtreme, CSS, HTML, and UI/UX principles; implemented authentication flows and polished user interfaces. Also improved the internal web application used by Cyprus Post to manage a wide range of postal services and products.

Software Engineer at Alpha Bank via UniSystems (Kalithea, Greece)

January 1, 2025 - October 25, 2025

Worked on Core Banking System Project to enable internal tellers to access and manage core banking services. Implemented frontend-to-backend communication via UI and API layers; ported bond/stocks and other transactions to Angular, Telerik UI, and C#/.NET Core. Implemented a horizontal file upload component (client-side).

Software Engineer (Full-Stack) at Interamerican via Syntax (Cholargos, Greece)

January 1, 2020 - October 25, 2025

Contributed primarily on frontend development for the MyAccount project, including forms for user registration and account updates; supported contract-related functionality (e.g., auto pay and insurance coverages). Used Sass to maintain theme consistency during rebranding and worked in an Agile Scrum environment.

Software Engineer at ATHENA - Research and Innovation Center (Maroussi, Greece)

December 1, 2018 - October 25, 2025

Extended user community notification/subscription functionality using Angular 4 and UIKit 3; designed and implemented a unified login portal (client-side) with 3rd-party login: OpenID Connect and OAuth, RESTful services, and a Postgres data layer. The login portal was used across ~35 countries and ~20 websites (e.g., Zenodo).

Web Developer & Digital Marketing Intern at Means4/Nexuslab (Cholargos, Greece)

September 1, 2014 - October 25, 2025

Designed and implemented a new e-shop using OpenCart with custom themes and modules, updated existing e-shops, and performed social media promotion and SEO.