Sr. Backend Developer

Projectmates by Systemates Inc.; Richardson (TX); Hybrid; USD 90,000 - 120,000; Full time

Job summary

Projectmates by Systemates Inc. is looking for a Sr. Backend Developer based in Richardson, TX, to design and maintain backend systems for our Projectmates platform. This role involves database design, API development, and mentoring other developers.

The ideal candidate will have over 5 years of experience in software development with strong skills in C#, .NET Core, and Azure SQL Server. The position offers a hybrid work schedule, requiring in-office presence on Tuesdays and Thursdays.

Qualifications

• 5+ years of professional software development experience with a strong backend focus.
• Expert-level proficiency in C# and the Microsoft .NET technology stack.
• Deep experience with Azure SQL Server including query optimization and indexing.

Responsibilities

• Design and develop robust, scalable backend systems and RESTful APIs.
• Own database architecture in Azure SQL including stored procedures and schema design.
• Lead performance tuning and optimization of backend services and database queries.

Skills

C#

.NET Core

ASP.NET

Azure SQL Server

RESTful APIs

Azure services

problem-solving

communication

collaboration

Education

Bachelor's degree in computer science or related field

Job description

From our corporate offices in DFW, Systemates is not-so-quietly plotting the construction industry on a course to a more tech-focused future. Our award-winning software, Projectmates, contains all of the functionality needed to unite and streamline complex construction project management processes. Put simply, Projectmates users are more efficient, more cost-effective, and better prepared for the changing construction landscape.

Now, this is where you come in.

We're searching for people who thrive in a small, growth-focused environment. You need to be passionate about helping customers solve problems and focused on self-improvement. Our talented and diverse team is working to take Systemates to the next level.

Help us build something great.

About the Job

The Sr. Backend Developer is a senior individual contributor responsible for designing, building, and maintaining the server-side architecture that powers the Projectmates platform. You will own complex backend systems end-to-end — from database design and API development to performance optimization and cloud infrastructure — while serving as a technical mentor to other developers on the team. This position reports to the Development Manager.

What You'll Be Doing

• Design and develop robust, scalable backend systems and RESTful APIs supporting the Projectmates web application
• Own database architecture including stored procedures, views, triggers, functions, and schema design in Azure SQL
• Lead performance tuning and optimization of backend services and database queries
• Collaborate with frontend developers to define and implement API contracts that support a ReactJS-based UI
• Participate actively in code reviews, enforcing best practices, security standards, and software craftsmanship
• Investigate and resolve complex system faults, identifying root causes and implementing permanent fixes rather than workarounds
• Contribute to architectural decisions — evaluating current system design and recommending improvements for scalability, reliability, and maintainability
• Support third-party integrations and API connections with external platforms
• Write comprehensive unit and integration tests and champion test-driven development practices
• Mentor other developers through code reviews and technical guidance
• Perform other duties and special projects as assigned

Desired Skills & Experience

• 5+ years of professional software development experience with a strong backend focus
• Expert-level proficiency in C# and the Microsoft .NET technology stack (.NET Core, ASP.NET)
• Deep experience with Azure SQL Server — query optimization, indexing strategies, and complex database object development
• Proven experience designing and building RESTful APIs consumed by modern frontend frameworks
• Solid understanding of Azure cloud services — including App Services, Azure DevOps, and related infrastructure
• Strong grasp of software architecture principles — separation of concerns, SOLID principles, design patterns
• Experience with third-party API integrations a strong plus
• Excellent problem-solving, communication, and collaboration skills
• Bachelor's degree in computer science, Software Engineering, or related field preferred; equivalent experience considered

Where You'll Be Working

This is a hybrid full-time role based out of our Richardson, TX office. Tuesday & Thursday in office, Monday, Wednesday & Friday work from home.

EEO Statement

Systemates Inc. is committed to creating a diverse environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.