Senior Backend Developer

We are looking for a senior backend developer

Ready to build in an AI-native environment, where LLMs, automation, and intelligent integrations are part of everyday engineering and not a future roadmap item.

You will work alongside developers, designers, project managers, and clients to deliver high-quality platforms that create real business value, using modern technologies and AI-powered tools where they add value.

About Significa

Significa is a strategic digital agency helping organizations create digital experiences and technology solutions since 2006.

Today, we are a team of 80+ professionals across our offices in Athens and Cairo, partnering with leading organizations in banking, finance, insurance, travel and tourism to deliver digital experiences and technology solutions that drive growth and innovation.

What you will do

Develop and maintain backend systems and web applications

Build integrations with APIs and third-party platforms

Design and implement new features and services

Participate in architecture and technical design decisions

Optimize and support existing applications

Collaborate with developers, designers, project managers, and clients

Mentor junior developers and contribute to engineering best practices

What we are looking for

Must have

5+ years of backend development experience

Strong knowledge of C# and ASP.NET MVC

Experience with .NET 5+ / .NET Core

Experience with REST APIs and web services

Experience with Sitecore, Umbraco or Kentico CMS platforms

Git version control

Understanding of SOLID principles and secure coding practices (OWASP)

Strong analytical and problem-solving skills

Comfortable using AI tools (e.g. Claude, Claude Code) to improve productivity and accelerate delivery, while maintaining full ownership, critical thinking, and accountability for the quality of your work

Professional proficiency in English

What makes you successful

Collaborative and team-oriented mindset

Respectful and professional communication

Ownership and accountability

Strong problem-solving skills

Curiosity and continuous learning

Nice to have

Docker

Azure or AWS

CI/CD pipelines

Microservices architecture

Experience integrating LLM APIs (OpenAI, Azure OpenAI, Anthropic)

Familiarity with vector databases (e.g. Pinecone, pgvector, Qdrant)

Exposure to AI agent frameworks (e.g. Semantic Kernel, LangChain)

Tech stack

C# • ASP.NET MVC • .NET Core • REST APIs • Git • Docker • Azure • OpenAI / Azure OpenAI

What we offer

Your balance

Hybrid working model

Flexible working hours

Competitive salary package

Private medical & life insurance

Your development

Structured onboarding and training program

Dedicated training budget for personal and professional development

Continuous development of competencies, including structured exposure to AI tools and practices

Exposure to challenging projects across multiple industries

Clear career progression opportunities

Your environment

Work alongside experienced designers, developers and project managers in a collaborative environment.

A modern workspace designed to encourage co-creation, collaboration, and innovation

A culture built on quality, teamwork and continuous improvement

Ready to join us?

If you're excited about building high-quality software in a world where AI is reshaping what's possible — and you want to be at the front of that — we would love to hear from you.