Senior Software Engineer at Marsie – Argentina | Jobyssey

At MARSIE, we connect top-tier engineers from Latin America with leading global teams.

Our client is looking for a Senior Software Engineer to join its Customer Experience team who works holistically, designing strategic solutions that go beyond just writing code. A strong track record in understanding business needs, communicating effectively, and delivering impactful results is essential, along with leadership qualities to guide and inspire colleagues.

The daily tasks of this role will be as follows:

Dive into unfamiliar code to troubleshoot or add a new feature
Participate in feature development of larger projects
Technically lead smaller projects/initiatives
Propose technical designs, considering standard patterns, tradeoffs, and maintainability
Participate in Support tasks, including off-hours and weekend on-call rotations
Provide thorough and meaningful code reviews
Work with legacy as well as novel code bases
Prototype, develop, and debug new features
Implement and maintain DevOps cloud patterns

The ideal candidate will have the following profile:

Degree in Computer Science, Engineering, or related field.
5+ years of experience developing back-end services and APIs in a distributed, service-oriented architecture, and building large-scale front-end applications using modern frameworks.
Full Stack Development: Proficiency in at least 3 software languages, with a demonstrated ability to quickly learn new ones as needed. Python and React are a must.
Experience with data modeling using multiple databases and storage types
3+ years of experience designing and deploying services in the cloud (e.g. AWS, GCP, Azure, OCI).
Fluency in Spanish and English.

Bonus points for:

Prior healthcare or experience in other regulated industries, particularly with data privacy and compliance requirements .
Kubernetes.
Experience in ETL pipelines, orchestrators or workflow engines (e.g., Temporal, Airflow, Dagster)
Familiarity with Infrastructure as Code and DevOps practices (e.g., Terraform)
Experience using AI-powered coding tools (e.g., GitHub Copilot, Cursor, code assistants)

Benefits

Fully remote work
Fixed monthly compensation in USD
Full-time, long-term contract
Paid Time Off (PTO) & Paid Local National Holidays

About Marsie

Marsie is a technology partner that provides experienced software engineers to help companies with their product and platform development. We work in a staff augmentation model, embedding experienced engineers into our clients' teams to bring immediate impact, strong technical skills, and a collaborative mindset. Our engineers work on complex systems across modern stacks and cloud environments, while enjoying a remote culture built on trust and long-term relationships.

About The Client

You'll be working with a science-driven organization at the forefront of genetic testing and diagnostics, with over two decades of experience advancing the understanding of rare diseases. Their multidisciplinary team, composed of genetic counselors, clinicians, and genomics experts, combines deep technical and clinical expertise to deliver accurate, meaningful insights that directly impact patient care. From advanced sequencing technologies to rigorous data interpretation and ongoing research, they are committed to solving complex diagnostic challenges and continuously expanding knowledge in the field. Their culture emphasizes collaboration, curiosity, and accountability, fostering an environment where bold ideas, clear communication, and a strong sense of purpose come together to make a tangible difference in patients' lives.

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