Senior Full Stack Software Engineer (C#/.NET and Vue.js)

N-iX; Poland; On-site; PLN 120,000 - 160,000; Full time

Benefits offered by this job

Flexible working format

Competitive salary

Personalized career growth

Professional development tools

Education reimbursement

Job summary

N-iX is seeking a skilled Senior Full Stack Software Engineer in Poland. The role involves designing, developing, and maintaining web applications using C# and Vue.js, while collaborating with product and engineering teams. With a minimum of 6 years in software development, candidates should have strong proficiency in C#/.NET and Vue.js. The position offers flexible working formats, opportunities for career growth, and professional development tools, making it ideal for tech enthusiasts who value collaboration and continuous learning.

Qualifications

• 6+ years of professional software development experience.
• Proficient in Modern C#/.NET and Vue.js with 2+ years of experience.
• Strong coding experience focusing on maintainability and reliability.

Responsibilities

• Design, develop, and maintain scalable web applications using C# and Vue.js.
• Collaborate with teams to scope and deliver features.
• Lead and mentor junior developers on best practices.

Skills

C#/.NET

Vue.js

CSS and modern front-end styling

Database technologies

Version control systems

Code reviews

Education

University degree in Software Engineering or related field

Tools

GCP

PostgreSQL

DevOps (CI/CD pipelines, K8s, Helm)

Job description

We are looking for a skilled and driven Senior Full Stack Software Engineer to join our growing team.

Responsibilities

• Design, develop, and maintain scalable and reliable web applications using C# and Vue.js
• Collaborate with product and engineering managers, stakeholders, and other teams to scope, prioritize, and deliver value‑adding features to our consumers
• Write clean and testable code
• Lead and mentor more junior developers in code quality, clean architecture, and best practices

Requirements

• 6+ years of professional software development experience
• Proficient (2+ years experience) in each of the following, with senior‑level expertise in at least one:
  • Modern C#/.NET
  • Vue.js (or similar reactive frameworks, e.g. React, Angular)
  • CSS and modern front‑end styling practices
  • Database technologies
• Experience leading complex engineering initiative design and execution
• Strong clean coding experience (maintainability, flexibility, extensibility, reliability)
• Strong communication skills and experience giving and receiving code reviews
• Experience with version control systems
• Experience mentoring other developers, formally or informally

What Makes You Stand Out (nice‑to‑haves)

• University degree in Software Engineering or related field
• Experience with GCP, GKE, GCS (or similar cloud technologies)
• Experience with PostgreSQL
• Familiarity with DevOps (CI/CD pipelines, K8s, Helm, Argo CD, Terraform)
• Experience with Application Security, SecOps, Cloud Security, or similar
• Experience with migration patterns (strangler‑fig, dual‑write, CDC, etc)
• Experience with rollout strategies (blue‑green, canary, phased)

Qualities that will make you successful

• Strong interpersonal and communication skills
• Ability to work collaboratively in a remote environment
• Growth mindset and motivated by constructive feedback
• Proven ability to work independently, manage schedules, and meet deadlines
• Passion for education and building solutions that support students and educators

We Offer

• Flexible working format – remote, office‑based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location‑specific benefits
• Not applicable for freelancers