Senior Full Stack Lead

ABOUT THE ROLE

We are looking for a highly experienced Senior Full Stack Lead Developer to take ownership of our flagship web-based Field Management Software platform. This is a hands-on technical leadership role: you will architect, build, and guide the evolution of a sophisticated single-page application (SPA) ecosystem backed by a robust .NET/C# Web API and SQL Server data layer. Roughly 80% of the application surface is built in JavaScript using our proprietary one-page app framework, making deep JavaScript expertise absolutely essential.

You will mentor junior and mid-level developers, drive code quality standards, own technical architecture decisions, and partner closely with product owners and stakeholders to deliver reliable, scalable solutions for field teams operating in demanding real-world environments.

WHAT YOU'LL DO

• Architect and lead development of our web-based Field Management SPA, ensuring performance, scalability, and maintainability across the full stack.
• Own the JavaScript front-end platform — our proprietary one-page application framework — driving design decisions, component standards, and API integration patterns.
• Design and implement RESTful Web APIs in ASP.NET / C# that power the front-end and integrate with third-party services.
• Write, optimize, and review complex T-SQL queries, stored procedures, and data models on SQL Server.
• Develop and maintain .NET Windows Services for background processing, scheduling, and system-level integration tasks.
• Establish and enforce coding standards, perform thorough code reviews, and champion engineering best practices across the team.
• Collaborate with product management, UX designers, and field operations stakeholders to translate requirements into technical solutions.
• Drive CI/CD pipeline improvements, deployment strategies, and DevOps practices.
• Identify, diagnose, and resolve complex performance bottlenecks and production issues.
• Mentor and grow junior and mid-level developers through pair programming, technical coaching, and knowledge sharing.

REQUIRED QUALIFICATIONS

• 8+ years of professional full stack software development experience.
• 3+ years in a technical lead, principal engineer, or software architect role.
• Expert-level JavaScript (ES6+) — deep understanding of async patterns, DOM, event loops, module systems, and SPA architecture.
• Strong proficiency in C# and .NET Framework / .NET Core for back-end Web API development.
• Solid hands-on experience with ASP.NET (MVC and/or Web API).
• Solid hands-on experience with SignalR or WebSockets for real-time data scenarios.
• Advanced T-SQL skills — query optimization, indexing strategies, stored procedures, and schema design on SQL Server.
• Experience building and maintaining .NET Windows Services.
• Proven ability to design RESTful APIs consumed by rich JavaScript clients.
• Demonstrated experience leading and mentoring engineering teams.
• Experience with source control (Git) and collaborative development workflows.

PREFERRED / NICE TO HAVE

• Experience with field service, workforce management, or operations software.
• Familiarity with modern JavaScript frameworks (React, Vue, Angular) alongside custom/proprietary SPA development.
• Experience with CSS architecture — responsive design, CSS pre-processors (LESS/SASS), and UI component libraries.
• Background in implementing offline-capable or mobile-first web applications for field use.
• Experience with automated testing frameworks for both front-end (Jest, Mocha) and back-end (.NET unit/integration testing).
• Prior work in industries such as utilities, construction, logistics, or facilities management.

CORE TECHNOLOGY STACK

JavaScript (ES6+) — Primary Language

C# / .NET Framework & .NET Core

ASP.NET Web API / MVC

T-SQL / Microsoft SQL Server

.NET Windows Services

CSS / Responsive Web Design

RESTful Web API Architecture

Custom SPA Framework (Proprietary)

Git Version Control

IIS / Windows Server

HOW TO APPLY

Submit your resume, a brief cover letter outlining your experience with large-scale JavaScript applications and .NET back-end systems, and any relevant portfolio links or GitHub profile. We review every application and will reach out to qualified candidates within two weeks.