Senior Software Engineer

LE001 Mastercorp, Inc.; Florida; Hybrid; USD 120,000 - 160,000; Full time

Benefits offered by this job

Competitive pay

401(k) matching

Paid vacation and sick time

Medical, dental and vision benefits

Life insurance

Tuition reimbursement

Job summary

MasterCorp, Inc. is seeking a Senior Software Engineer to lead hands-on development across the full stack, APIs, and integrations. You will contribute to message-driven and distributed systems with NServiceBus, ensuring reliability and scalability.

The role mentors engineers, shapes technical direction, and takes operational ownership of critical services, while adapting to AI-assisted development practices to improve speed and quality.

Qualifications

• Seven or more years of professional software development experience with strong hands-on C# and .NET.
• Experience building, enhancing, and supporting production-grade full stack applications and backend services.
• Strong experience with distributed systems, service-oriented architecture, and asynchronous workflow patterns.

Responsibilities

• Design, develop, and maintain full stack software across front-end, backend, APIs, and integrations.
• Develop scalable software using C# and .NET for internal systems and customer-facing apps.
• Build and enhance message-driven and distributed systems using NServiceBus and related patterns.
• Design for distributed system reliability, observability, and recovery.
• Extend microservices, APIs, and data workflows to improve business capabilities.
• Write and maintain tests to ensure quality, stability, and reliability.

Skills

Full stack

C#

NET

NServiceBus

Azure

Blazor

ASP.NET Core

UI design

Distributed systems

Messaging patterns

Education

Bachelor's degree in CS/Engineering

Tools

NServiceBus

Azure

Service Bus/Queues

Job description

Join Our Team at MasterCorp, Inc.! At MasterCorp, Inc., we provide exceptional service and innovative solutions in the hospitality industry. As a leader in our field, we believe in the power of teamwork, integrity, and a commitment to excellence. Our dynamic and inclusive workplace fosters growth, creativity, and the opportunity to make an impact. We are looking for passionate and driven individuals to join our team and help us continue to deliver outstanding results for our clients.

The Senior Software Engineer is a hands‑on technical leader on a small, high‑impact engineering team responsible for designing, building, operating, and continuously improving critical business applications, platform services, and integrations. This role is expected to contribute across the full technology stack, including user‑facing applications, APIs, data models, asynchronous workflows, distributed integrations, messaging infrastructure, and production support. The position requires strong full stack development experience, deep backend engineering instincts, and the ability to make sound technical decisions in message‑driven and distributed system environments. The Senior Software Engineer will help shape technical direction, deliver business‑critical capabilities, mentor other engineers, and take operational ownership of assigned systems and functional areas. The ideal candidate is curious, adaptable, AI‑aware, and eager to learn and responsibly apply emerging tools and practices that improve engineering speed, software quality, and team effectiveness.

COMPETENCIES REQUIRED

• Action Oriented – Takes on new opportunities and tough challenges with a sense of urgency, high energy, and enthusiasm.
• Optimizes Work Processes – Knows the most effective and efficient processes to get things done, with a focus on continuous improvement.
• Collaborates – Builds partnerships and works collaboratively with others to meet shared objectives.
• Courage – Steps up to address difficult issues and says what needs to be said.
• Situational Adaptability – Adapts approach and demeanor in real time to match the shifting demands of different situations.
• Customer Focus – Builds strong customer relationships and delivers customer‑centric solutions.
• Drives Results – Consistently achieves results, even under tough circumstances.

ESSENTIAL FUNCTIONS

• Design, develop, and maintain full stack software solutions across front‑end applications, backend services, APIs, integrations, and supporting data systems.
• Develop scalable, maintainable software using C# and .NET across both internal business systems and customer‑facing applications.
• Build and enhance message‑driven and distributed systems using patterns and frameworks such as NServiceBus, including asynchronous processing, command and event handling, sagas, durable workflows, and message handlers where appropriate.
• Design for distributed system reliability, including retries, idempotency, deduplication, eventual consistency, observability, resiliency, dead‑letter handling, graceful failure handling, and recovery strategies.
• Extend existing microservices and create new APIs, service endpoints, background processing components, data workflows, and integration services that improve business capability and operational efficiency.
• Create and evolve data schemas, persistence models, service contracts, message contracts, and integration patterns across multiple storage and communication mechanisms.
• Make pragmatic architecture and design decisions related to service boundaries, data flow, scalability, performance, maintainability, security, and operational simplicity.
• Write and maintain unit, integration, and automated regression tests to ensure quality, stability, and confidence in delivered solutions.
• Investigate, troubleshoot, and resolve defects, production issues, and performance bottlenecks across application, service, infrastructure, data, and integration layers.
• Take operational ownership of assigned systems and functional areas, including monitoring, support, root cause analysis, ongoing optimization, and long‑term stewardship.
• Partner with Service Desk, business stakeholders, architects, engineers, and support teams to respond to production issues, support requests, and workflow‑impacting incidents.
• Participate actively in agile development meetings, technical design sessions, code reviews, cross‑functional planning discussions, and presentations.
• Provide code review feedback focused on correctness, maintainability, testability, operational reliability, security, and architectural fit.
• Mentor and guide other team members through collaboration, design guidance, technical leadership, and hands‑on support in delivery work.
• Stay current with emerging engineering practices, including AI‑assisted development tools, and apply them thoughtfully and responsibly to improve engineering effectiveness, software quality, security, and team productivity.
• Build and maintain strong knowledge and understanding of MasterCorp business processes, operational workflows, system interactions, and terminology.

EXPERIENCE AND EDUCATION

• Bachelor’s degree in Computer Science, Mathematics, Engineering, or a related technical field; or equivalent combination of education and professional experience.
• Seven (7) or more years of professional software development experience, with strong hands‑on expertise in C# and .NET.
• Proven experience building, enhancing, and supporting production‑grade full stack applications and backend services.
• Strong experience with distributed systems, service‑oriented architecture, message‑based or event‑driven design, and asynchronous workflow patterns.
• Experience implementing asynchronous workflows and inter‑service communication using technologies such as NServiceBus, service buses, queues, or event‑driven platforms.
• Experience designing and supporting APIs, microservices, background services, system‑to‑system integrations, service contracts, and message contracts.
• Strong understanding of relational database design, query optimization, indexing, transactions, caching, and data performance tuning.
• Familiarity with Azure, cloud‑hosted environments, managed databases, application hosting, CI/CD pipelines, source control workflows, and modern software delivery practices.
• Experience building modern web and cross‑platform applications using Blazor, ASP.NET Core, and .NET MAUI.
• Experience with mobile application deployment and release processes for the Apple App Store and Google Play is a plus.
• Experience with component‑based UI development, dependency injection, API integration, authentication and authorization, reusable UI patterns, and responsive application design.
• Experience with front‑end web technologies including HTML5, CSS3, JavaScript, and modern web application patterns.
• Experience with software development lifecycle (SDLC), agile development methodologies, and production support practices.
• Experience communicating complex technical concepts clearly to both technical and non‑technical audiences.

OTHER QUALIFICATIONS

• Deep understanding of distributed systems concepts, including service boundaries, consistency tradeoffs, failure modes, message contracts, asynchronous communication patterns, scalability, and maintainability.
• Experience with NServiceBus in production environments, including sagas, durable workflows, background processing, retries, error queues, and operational recovery, is strongly preferred.
• Strong verbal and written communication skills with the ability to lead technical conversations effectively across teams and translate engineering considerations into business context.
• Demonstrated technical leadership, sound judgment, ownership mindset, and ability to operate effectively in a lean team where engineers are expected to be self‑directed, versatile, and highly accountable.
• Comfortable moving between strategic architecture discussions and hands‑on implementation, debugging, testing, and production support.
• High degree of adaptability, curiosity, and willingness to learn new frameworks, tools, business domains, and emerging technologies.
• Strong awareness of the evolving role of AI in software engineering, with eagerness to adopt useful tools, experiment responsibly, and continuously improve individual and team effectiveness without sacrificing rigor, security, or engineering discipline.

TRAVEL REQUIREMENTS

Rarely – on average 5% of travel on a quarterly basis

The Senior Software Engineer is not limited to the above-mentioned job description and may be requested to do additional tasks as directed by MasterCorp Management.

PHYSICAL REQUIREMENTS

This position frequently requires standing, walking, pushing, pulling, moving, lifting (up to 25 lbs), bending, reaching, occasional ascending/descending, and repetitive motions. Employee must be able to perform the essential functions of the position satisfactorily, reasonable accommodations may be made to enable employees with disabilities to perform the essential functions of their job.

Equal Opportunity Employer Statement

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Company Perks

• Competitive Pay at All Levels.
• Our Housekeepers make more with Piece Rate Pay – designed to reward efficiency and timeliness!
• 401(k) Retirement Plan with Company Matching.
• Paid Vacation and Sick Time.
• Medical, Dental and Vision Benefits.
• Company-Paid Life Insurance and Short-Term Disability.
• Tuition Reimbursement.

About Us

With over 40 years of experience, MasterCorp is a leader in hospitality services, renowned for our expertise, quality, and commitment to excellence. We provide a comprehensive range of services, including Housekeeping; Commercial Facility Maintenance and Janitorial; Floor Care; Engineering; and Commercial Laundry, supporting clients across diverse industries with dependable, fully customizable solutions. At MasterCorp, our People Proud culture is guided by our Core Values of Integrity, Respect, Dependability, Pride, and Quality. Our Associates are more than a team—they’re family. We believe in recognizing each individual’s contributions and fostering a welcoming environment where teamwork thrives, and growth is encouraged. Whether on the frontlines or behind the scenes, their efforts are essential to our success.