Senior .NET Developer at Marcus Thomas, LLC – Buenos Aires, Buenos Aires

Marcus Thomas is one of the country’s leading independent advertising and marketing agencies. From our offices in Cleveland and Cincinnati, Ohio; Buenos Aires, Argentina; and Santiago, Chile, we bring together thinkers, makers and storytellers who help brands grow by creating meaningful connections with people.

We offer a full range of services: creative, media, digital, PR, social, search and CRM, all working together to build ideas that make an impact. Our integrated approach has earned national recognition for work that blends strategy, creativity and technology to move businesses forward.

At Marcus Thomas, we believe great marketing makes people’s lives better. We call that the Value Exchange: a partnership where everyone benefits. Join us and help shape an agency driven by curiosity, collaboration and results.

Marcus Thomas offers a hybrid work environment for employees located near our Buenos Aires offices.

We are seeking a dynamic and results-driven Senior .NET Developer to join our Nucleus team (https://nucleus.mtllc.com )

The ideal candidate for this position will collaborate with the Nucleus product team to develop functionalities for the product based on our roadmap utilizing cutting edge development technologies and following our product development agile methodology.

Additionally, the candidate will work on client assignments related to Nucleus implementations or related technology projects.

The candidate needs to show proficiency not only in .NET Core framework but have flexibility to develop functionality utilizing Front End Development frameworks such as NEXTJS and Tailwind.

Nucleus is a Campaign Management Platform that allows marketers to centralize and simplify the process of creating and deploying marketing campaigns.

It sits on top of existing Marketing Automation tools such as Salesforce Marketing Cloud allowing marketing teams to simplify the campaign creation and approval process without having to login into the existing platforms.

Nucleus is a product that was created within Marcus Thomas as part of our product innovation initiative and is being offered as a SaaS platform.

· Develop custom code that meets the user story requirements, technical architecture and wireframes utilizing the technologies in which Nucleus is built upon.

· Work within a multi-discipline team, composed of technical and nontechnical members.

· Participate in the writing of technical/functional specifications, solution design and code documentation.

· Participate in weekly refinement meetings to brainstorm and identify optimal approaches to delivering against client wants/needs/requirements.

· Take initiative to research and learn about emerging technologies, trends and industry developments; and share that information with fellow staff members.

Required Skills and Experience:

· 5+ years of development experience with proven success in developing digital, web, online and/or mobile solutions.

· Demonstrated knowledge working with C#, NetCore, MVC, Entity Framework.

· Demonstrated knowledge developing API services and scheduled jobs.

· Experience working with Front End Frameworks such as NextJS and Tailwind.

· Experience working with cloud-based environments such as Azure, AWS, and GCP.

· Experience working with feature branches and pull requests in Git.

· Experience with relational database design and development such as SQL.

· Experience through all phases of development processes from discovery and definition through design and development.

· A commitment to clean, well-organized code and code documentation following best practices is mandatory.

· Experience utilizing AI coding agents to accelerate development time without compromising the quality or accuracy of deliverables.

· Experience working in SaaS product environments.

· Experience working with Docker and Kubernetes.

Long-Term Client Relationships: Our clients stay with us for over 12 years on average, showcasing our commitment and success in serving their needs.

Award-Winning Projects: Engage in projects that have received industry accolades, contributing to our reputation for excellence.

· Eligible for Monthly Recognition Awards.

· Kentico & Salesforce Certification exams paid for by Marcus Thomas.

· Monetary bonus for earning strategic certifications and accreditations.

· $20/month toward home internet/connectivity (the equivalent in local currency)

· Health and Wellness: You will be reimbursed up to $200 annually (the equivalent in local currency), per eligible staff member, for costs associated with health and wellness, including, but not limited to, gym memberships, psychology sessions, fitness watches and apps, fitness/soccer/yoga equipment and gear, and running shoes.

· Paid, flexible time off (Sick/Study/Vacation legal system)

· Paid, observed local National Holidays

· Paid, 1 week extra per year as personal time off

· Paid, Paternity leave: 4 weeks of time off

· Annual Diversity & Inclusion Training

· Time for Training / Certification

· English Classes

· Health insurance family pack (ARG: OSDE 310)

· Access to common spaces & events

· Travel opportunities

· Employee anniversary gift: breakfast delivery, except for Milestone anniversaries.

At Marcus Thomas, our values shape how we work with each other and with our clients.

Community – We contribute to the growth of our agency, our industry and our communities.Accountability – We show up, keep our word, and take ownership of our work and results.Collaboration – We lead with empathy, listen actively and value every voice.Curiosity – We stay curious, ask questions and bring new ideas to the table.Diversity – We respect and celebrate different perspectives because they make the work stronger.Make Work Play – We bring energy, creativity and joy into everything we do.

Our hiring process is designed to help us get to know you and give you a genuine feel for our culture and team. It typically includes short conversations with our recruiting team and hiring manager, a team and/or leader interview, and final selection.

To support fairness and consistency, we use AI tools to assist with parts of the process. Résumés may be reviewed initially with an AI assistant that compares experience and skills to the job description and highlights potential matches for our recruiting team. Candidates can choose to opt out of AI résumé screening when applying.

We also use AI to record and transcribe interviews to promote accuracy and equity. Transcripts may be reviewed by HR to confirm that all candidates are treated respectfully and evaluated fairly. Candidates can opt out of this transcription feature at any stage.

While AI helps us stay organized and consistent, every decision to move a candidate forward is made by real people. Our recruiting and hiring teams remain hands-on throughout the process and use AI only as a tool, not as a decision-maker for how to find talent.

At Marcus Thomas, we believe diversity is a strength and that great ideas come from different perspectives. We’re committed to creating opportunities for talented individuals who have been historically underrepresented in our industry and to fostering an inclusive culture where everyone can grow, thrive and do their best work.

We encourage women, people of color, LGBTQIA+ individuals, immigrants, people of all religions and nationalities, and people with disabilities to apply. All qualified applicants will receive consideration for employment regardless of race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, marital status, protected veteran status, or disability.