SR. ANDROID DEVELOPER / TEAM LEAD - KOTLIN

Webmyne Systems Private Limited; Kotlin; On-site; PLN 180,000 - 240,000; Full time

Job summary

Webmyne Systems Private Limited in Poland is seeking a Senior Full Stack Developer with strong .NET Core and Angular expertise to design, develop, and maintain scalable enterprise applications. You will lead modules or small teams while collaborating with cross-functional stakeholders to deliver high-impact solutions.

The role emphasizes REST API design, database optimization, CI/CD, and modern front-end technologies, with cloud familiarity being a plus.

Qualifications

• 5+ years of experience in full-stack web application development.
• Proficient in .NET Core and Angular; able to lead modules or small teams.
• Strong problem-solving and cross-functional collaboration skills.

Responsibilities

• Design, develop, and maintain enterprise applications using .NET Core and Angular.
• Implement RESTful APIs and integrate front-end with back-end systems.
• Lead modules, review code, and guide junior developers.
• Manage database design and performance for SQL Server / PostgreSQL.
• Implement CI/CD pipelines and ensure security, scalability, and performance.

Skills

Backend: .NET Core / ASP.NET Core

C#, LINQ, Entity Framework Core

REST API design

Angular (latest)

TypeScript, HTML5, CSS3

Responsive UI

MS SQL Server / PostgreSQL

Git / GitHub / GitLab / TFS

CI/CD (Jenkins / GitLab / Azure DevOps

Docker / Containerization

Azure / Cloud platforms

Tools

Postman

Swagger

Azure DevOps

Jenkins

Git

Docker

Job description

NO OF OPENINGS: 1

YEARS OF EXPERIENCE: 5+ years of experience in full-stack web application development

Job Description

We are seeking an experienced Senior Full Stack Developer proficient in .NET Core and Angular to design, develop, and maintain scalable enterprise applications. The ideal candidate should have a strong technical background, excellent problem-solving skills, and the ability to lead modules or small teams while working closely with cross-functional stakeholders.

• Design, develop, and maintain web applications using .NET Core (C#) and Angular (latest version).
• Work on RESTful API design, development, and integration between front-end and back-end systems.
• Implement clean architecture, reusable components, and optimized code.
• Manage SQL Server / PostgreSQL database design, queries, and performance tuning.
• Integrate third-party APIs, payment gateways, and external services as needed.
• Perform code reviews, enforce best practices, and guide junior developers.
• Proficient with version control tools such as TFS, Git.
• Collaborate with QA, Designer, Mobile teams, and Product teams for smooth operations and delivery.
• Familiarity with Agile development methodologies like Scrum or Kanban.
• Implement and maintain CI/CD pipelines for automated build, testing, and deployment processes (using Azure DevOps / Jenkins / GitHub Actions).
• Ensure application security, scalability, and performance optimization.
• Participate in requirement analysis, technical design discussions, and sprint planning.
• Stay updated with the latest technologies, frameworks, and industry trends.
• Excellent verbal and written communication skills.
• Experience working with Azure or other cloud platforms is a plus.
• Knowledge of Docker, and containerization is a plus.

Must have Skills

• Backend:
• .NET Core / ASP.NET Core (Web API, MVC)
• C#, LINQ, Entity Framework Core
• REST API design & development
• Microservices (optional but preferred)
• Frontend:
• Angular (latest versions preferred)
• TypeScript, HTML5, CSS3, SCSS, Bootstrap
• Responsive UI design and state management
• Database:
• MS SQL Server / PostgreSQL
• Stored procedures, triggers, performance tuning
• Tools & Practices:
• Git / GitHub / GitLab / TFS
• Postman / Swagger for API testing
• Agile methodologies (Scrum, Kanban)
• CI/CD pipelines using Jenkins, or GitLab
• Docker / Containerization (preferred)