Senior Fullstack Engineer (.NET/React + Umbraco CMS) – (Part-time) – Digital Agency

Remote from: LATAM
Annual salary: Undisclosed
Salary information is not provided for this position. Check our Salary Directory to estimate the average compensation for similar roles.
Department: Software Engineering
Employment type: Part Time,
Job posted: 16 Jun 2026
Apply before: 16 Jul 2026
Experience level: Senior
Views / Applies: 13 / 2

About company

About Truelogic

Accelerate Your Digital Transformation

Computer Software
2011

Actively Hiring

AI Summary

Truelogic is seeking a Senior Fullstack Engineer for a part-time (20 hrs/week) role at a digital agency. You will work on multiple client-facing web projects using .NET, React/Angular, and Umbraco CMS. The role involves designing and maintaining full-stack features, integrating CMS platforms, and collaborating with cross-functional teams. Ideal candidates have 5+ years of experience, strong C# and .NET Core skills, and proficiency in modern frontend frameworks. This position offers autonomy and the opportunity to contribute to high-impact digital experiences.

Role DNA

Job Complexity

Easy Hard

Pace & Pressure

Relaxed Fast-paced

Autonomy Level

Guided Full Ownership

Communication Load

Independent Highly Collaborative

AI Insight Senior role requiring 5+ years of experience across both frontend and backend, including CMS integration and code review. The combination of .NET, React, and Umbraco adds technical breadth, and agency work demands adaptability and fast delivery.

Salary Analysis

AI Insight The job is part-time (20 hrs/week), so the full-time equivalent market median for this role is approximately $140,000. The part-time salary would be pro-rated to roughly $70,000. The offered salary is not specified, but factoring the seniority and niche Umbraco skills, it should be competitive for a part-time arrangement.

Key Skills

.NET C# React Umbraco REST APIs SQL Server Git CI/CD HTML/CSS JavaScript

Cover Letter Sample

Dear Hiring Manager,

I am writing to express my keen interest in the Senior Fullstack Engineer position at Truelogic. With over 5 years of experience in full-stack development using .NET, React, and Umbraco, I am confident in my ability to deliver high-quality solutions for your agency's clients. My background includes building scalable backend services, integrating CMS platforms, and leading code reviews to maintain engineering standards.

I thrive in collaborative, fast-paced environments and enjoy working closely with designers and strategists to bring digital products to life. My proficiency in REST APIs, SQL Server, and modern frontend frameworks ensures I can handle the technical demands of your projects independently.

I am excited about the opportunity to contribute to impactful projects while benefiting from the flexibility of a part-time role. I look forward to discussing how my skills align with your needs.

Sincerely,
[Your Name]

Possible Interview Questions

Can you describe a complex full-stack feature you built using .NET and React? How did you handle the integration with Umbraco?

I built a content-driven dashboard for a client using .NET Core for backend APIs and React for the frontend. The challenge was synchronizing Umbraco content with the React state. I implemented webhooks from Umbraco to trigger API calls and used SignalR for real-time updates. This ensured content editors saw changes immediately without full page reloads.

How do you ensure code quality and maintainability in a fast-paced agency environment with multiple projects?

I advocate for automated testing, code reviews, and consistent coding standards. For each project, I set up linting, unit tests, and integration tests in the CI/CD pipeline. I also document architectural decisions and maintain reusable component libraries to speed up development without sacrificing quality.

Describe your experience with Umbraco CMS. How did you extend its functionality for client-specific needs?

I have worked on several Umbraco projects, customizing document types, creating custom property editors, and integrating with external systems. For one client, I built a custom member authentication flow using Umbraco's membership provider and OAuth, and created custom surface controllers to handle form submissions with validation.

How do you approach collaborating with designers and strategists to translate requirements into technical implementations?

I participate in early design discussions to provide technical feasibility feedback. I create prototypes or proof-of-concepts to validate approaches. Throughout development, I maintain open communication, sharing progress and raising potential blockers. I use tools like Storybook to present component implementations to the team for feedback.

Since this is a part-time role, how would you manage your time across multiple client projects and ensure timely delivery?

I prioritize tasks based on project milestones and communicate my availability to the team. I use agile methodologies, breaking work into small, testable chunks. I also leverage async communication and thorough documentation to minimize meeting overhead. If risks arise, I escalate early with proposed solutions.

About Truelogic

At Truelogic we are a leading provider of nearshore staff augmentation services headquartered in New York. For over two decades, we’ve been delivering top-tier technology solutions to companies of all sizes, from innovative startups to industry leaders, helping them achieve their digital transformation goals.

Our team of 600+ highly skilled tech professionals, based in Latin America, drives digital disruption by partnering with U.S. companies on their most impactful projects. Whether collaborating with Fortune 500 giants or scaling startups, we deliver results that make a difference.

By applying for this position, you’re taking the first step in joining a dynamic team that values your expertise and aspirations. We aim to align your skills with opportunities that foster exceptional career growth and success while contributing to transformative projects that shape the future.

Our Client

Our client is a digital agency focused on delivering scalable, high-quality web solutions for enterprise organizations. The company specializes in modern web development, CMS implementations, and digital experience platforms, partnering with cross-functional teams of engineers, designers, strategists, and producers to build impactful digital products. Their engineering culture emphasizes collaboration, code quality, maintainable architectures, and successful delivery in fast-paced client environments.

Job Summary

We are looking for a Senior Full-stack Engineer to contribute to multiple client-facing web projects, building and maintaining scalable applications using .NET technologies and modern frontend frameworks. This role is ideal for an engineer who enjoys working across the stack, developing backend services and frontend experiences, integrating CMS-driven solutions, collaborating with multidisciplinary teams, and delivering high-quality technical implementations in a fast-paced agency environment.
Please note: this is a part-time position (20 hours per week) with the possibility of transitioning to full-time in the future, although such transition is not guaranteed.

Responsibilities

Design, develop, and maintain full-stack web application features across multiple client projects.
Build scalable backend services using C# and .NET Core.
Develop responsive and maintainable frontend applications using JavaScript and React or Angular.
Integrate CMS platforms, APIs, and third-party services to support content-driven digital experiences.
Participate in technical architecture discussions and contribute to technical decision-making.
Conduct and participate in code reviews to maintain engineering quality standards.
Collaborate closely with designers, strategists, producers, and fellow engineers throughout the development lifecycle.
Ensure code quality through testing, performance optimization, and adherence to development best practices.
Work independently while proactively communicating progress, risks, blockers, and recommendations.
Maintain technical documentation and support continuous improvement initiatives across projects.

Qualifications and Job Requirements

5+ years of experience as a developer
Strong professional experience with C# and .NET Core.
Strong frontend development experience with JavaScript and React (Angular experience is also acceptable).
Strong HTML, CSS, and JavaScript fundamentals.
Experience building and consuming REST APIs.
Experience integrating CMS platforms, with Umbraco experience strongly preferred.
Experience working with Microsoft SQL Server.
Experience using Git and CI/CD workflows.
Ability to work independently with minimal supervision and manage priorities effectively.
Advanced English communication skills, both written and verbal.

Nice to Have

Recent hands-on experience with Umbraco CMS.
Familiarity with Node.js.
Experience using AI-assisted development tools as part of the software development workflow.
Experience optimizing web performance, page speed, and frontend user experience.
Experience building reusable frontend component libraries or design system implementations.
Experience working with AWS cloud services.
Previous experience in digital agencies or fast-paced client delivery environments.
Knowledge of accessibility standards and responsive design best practices.
Participation in architecture discussions and technical design decisions.
Strong ownership mindset with the ability to drive work from requirements through delivery.

What We Offer

100% Remote Work: Enjoy the freedom to work from the location that helps you thrive. All it takes is a laptop and a reliable internet connection.
Highly Competitive USD Pay: Earn an excellent, market-leading compensation in USD, that goes beyond typical market offerings.
Paid Time Off: We value your well-being. Our paid time off policies ensure you have the chance to unwind and recharge when needed.
Work with Autonomy: Enjoy the freedom to manage your time as long as the work gets done. Focus on results, not the clock.
Work with Top American Companies: Grow your expertise working on innovative, high-impact projects with Industry-Leading U.S. Companies.

Why You’ll Like Working Here

A Culture That Values You: We prioritize well-being and work-life balance, offering engagement activities and fostering dynamic teams to ensure you thrive both personally and professionally.
Diverse, Global Network: Connect with over 600 professionals in 25+ countries, expand your network, and collaborate with a multicultural team from Latin America.
Team Up with Skilled Professionals: Join forces with senior talent. All of our team members are seasoned experts, ensuring you’re working with the best in your field.

Apply now!

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