Senior Back-End Developer

Senior Back-End Developer

Position Overview

Appspace is seeking a passionate Senior Back-End Developer to join our team. You will be responsible for the end-to-end ownership of backend features, focusing on clean code, scalable architecture, and elegant technical solutions. This role involves close collaboration with cross-functional teams to ensure the reliability, performance, and maintainability of our software. You will play a key role in driving our backend strategy, contributing to our engineering culture, and continuously improving our development processes.

About Appspace

At Appspace, we are dedicated to creating better work experiences for people everywhere. Our global office locations and flexible work culture empower you to work at your best, wherever and however you choose. We foster an environment where you can enjoy your work, build lasting connections, and grow your career. Join Appspace and be part of a culture that helps people love where they work.

Your Role as a Senior Back-End Developer

We are looking for a seasoned Senior Back-End Developer who is passionate about clean code, scalable architecture, and solving real-world problems with elegant technical solutions. In this role, you’ll take full ownership of backend features—from technical design to delivery—while working closely with cross-functional teams to ensure what we build is reliable, performant, and maintainable. You'll help drive our backend strategy forward, contribute to our engineering culture, and continuously look for ways to improve how we build software.

This role is perfect for someone who thrives in a collaborative, fast-moving environment and enjoys diving deep into frameworks like .NET, building secure and scalable APIs, and working with a modern tech stack that includes relational and NoSQL databases, containerization, and cloud infrastructure. If you’re someone who values craftsmanship, enjoys mentoring others, and stays curious about new tools and practices, we’d love to meet you.

A Day in the Life of a Senior Back-End Developer:

• Own and drive product features from technical design to delivery, collaborating closely with Product, QA, and other stakeholders.
• Tackle tech debt head-on—identify weak spots and propose real, scalable solutions.
• Write clean, testable, and high-performance code that follows our internal standards and makes future-you proud.
• Contribute to milestones by ensuring every piece of code meets our Definition of Done (DoD).
• Share technical ideas and solutions in a way that’s easy for the whole team to understand and rally around.
• Stay curious—research and test new tools, frameworks, and strategies to keep our stack modern and efficient.

Requirements

• 5+ years of experience building and delivering enterprise-grade applications using an object-oriented language.
• Solid experience with .NET Framework and ASP.NET (skill is prioritized over years of experience).
• Strong hands-on experience with MVC, Web API frameworks (ASP.NET or similar), and RESTful APIs.
• Familiarity with ORM frameworks like Entity Framework, NHibernate, or similar.
• Proficiency in relational database design and SQL querying.
• Deep understanding of SOLID principles and their practical application.
• Solid testing skills, including unit, integration, API, and performance testing.
• Excellent communication and interpersonal skills, with the ability to collaborate effectively across geographies and disciplines.
• A strong focus on writing maintainable, testable, well-crafted code using design patterns and best practices.
• Passion for clean code and craftsmanship (experience with TDD, BDD, or Code Calisthenics is a plus).

Nice to Have’s

• Experience with SharePoint and Office 365 development.
• DevOps experience and a CI/CD mindset.
• Familiarity with OAuth, OpenID, and modern authentication protocols.
• Experience with GraphQL APIs.
• Knowledge of NoSQL databases (e.g., document-based or key-value stores).
• Exposure to Microservices or Modular Monolith architecture.
• Understanding of advanced architectural patterns (DDD, Onion, Hexagonal, Ports & Adapters, CQRS).
• Experience with cloud-native applications and Azure cloud services.
• Familiarity with event-driven systems (Kafka, RabbitMQ, etc.).
• Experience working with containerized applications (Docker).

The Perks of Working for Appspace

Appspace offers a variety of benefits to all team members, including:

• Competitive salaries
• Employer-paid medical, dental, and vision coverage
• Mental health support

Application Instructions

• [Details on how to apply would typically go here, but are not provided in the original text.]

Company Information

• Name: Appspace
• Mission: Creating better work experiences for people everywhere.
• Culture: Flexible, collaborative, focused on growth and connection.