Senior Technical Lead – .NET Core

EX Squared

. Lead the design, development, and deployment of applications using C#, .NET Core, ASP.NET MVC 5, and Microsoft SQL Server .

Posted 11/10/2026full-timeRemote • MexicoSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in leading software development teams, with a strong focus on C#, .NET technologies, and Microsoft SQL Server. Proven ability to design scalable applications, mentor developers, and communicate effectively with stakeholders.

Highest-signal resume keywords

C# DevelopmentASP.NET MVCMicrosoft SQL ServerTechnical LeadershipCloud-Based Architectures

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

C#ASP.NET CoreMicrosoft SQL ServerObject-Oriented ProgrammingHTML5CSSJavaScriptJSONJQueryCI/CD Pipelines

Soft Skills

Problem-SolvingOrganizational SkillsDecision-MakingStakeholder ManagementMentoring

Tools & Technologies

ClickUpJiraMicrosoft AzureAgile/ScrumDevOps Practices

Industry Keywords

SaaS PlatformsEnterprise ApplicationsHigh-Availability SystemsTechnical ArchitectureSoftware Engineering Standards

Tech Stack

Tools & technologies

ASP.NETAzureCloudJavaScriptjQueryMS SQL ServerSQL.NET

About the role

Key responsibilities & impact

Lead the design, development, and deployment of applications using C#, .NET Core, ASP.NET MVC 5, and Microsoft SQL Server
Define technical architecture, design patterns, and development standards for scalable, maintainable, and high-performing solutions
Provide hands-on technical leadership through development, code reviews, debugging, and troubleshooting
Guide and mentor software developers
Own technical decisions and evaluate implementation approaches
Collaborate with product managers, stakeholders, and cross-functional teams to define priorities and deliver technical solutions
Coordinate development activities, identify dependencies, remove technical blockers, and ensure team alignment
Communicate project progress, technical decisions, risks, and delivery timelines
Ensure code quality, application performance, system reliability, and adherence to software engineering standards
Support cloud-based deployments, application integrations, and continuous improvements to existing systems
Track development progress and provide regular updates using ClickUp or similar project management tools
Lead technical development and evolution of a U.S.-based employee wellness platform

Requirements

What you’ll need

8+ years of professional experience in software development, with a strong focus on Microsoft technologies
3+ years of experience as a Technical Lead, Lead Developer, or Software Architect, with demonstrated responsibility for guiding development teams
5+ years of hands-on experience with C# and .NET technologies, including .NET Core and ASP.NET MVC
4+ years of experience with Microsoft SQL Server (MSSQL), including database design, queries, stored procedures, and performance optimization
Strong understanding of Object-Oriented Programming (OOP), SOLID principles, design patterns, and software architecture
Experience developing web applications using HTML5, CSS, JavaScript, JSON, and jQuery
Proven experience designing and maintaining scalable, reliable, and high-performance enterprise applications
Experience with cloud-based architectures, application deployment, and cloud services
Demonstrated experience leading code reviews, mentoring developers, establishing technical standards, and resolving complex technical challenges
Experience working with Agile/Scrum methodologies and project management tools such as ClickUp, Jira, or similar
Strong stakeholder management skills, with the ability to communicate technical decisions, project progress, and risks effectively
Excellent problem-solving, organizational, and decision-making skills
Advanced English proficiency (B2+/C1), both written and spoken
Experience modernizing legacy .NET applications or migrating systems to newer .NET versions
Hands-on experience with Microsoft Azure, including application hosting, deployment, and cloud architecture
Experience leading distributed engineering teams working with U.S.-based stakeholders
Background in SaaS platforms, enterprise applications, or high-availability systems
Experience implementing CI/CD pipelines, automated testing, and DevOps practices
Familiarity with system integrations, REST APIs, and third-party services
Experience balancing hands-on development responsibilities with team leadership and technical planning

Benefits

Comp & perks

100% remote opportunity for professionals based in Latin America
Continuous learning
Collaboration-focused work environment
Opportunity to solve meaningful challenges and deliver solutions with real business impact