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.

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