Sr Software Engineer (.NET/C#/ASP.NET MVC)

Location: Costa Rica Remote

Time Type: Full time

Job Description

At Clario, part of Thermo Fisher Scientific, we are looking for a Senior Software Engineer with strong hands-on development experience to help design, build, enhance, and support software applications used by internal teams, clients, and partners.

In this role, you will contribute across the full software development lifecycle — from requirements analysis and solution design through development, testing, deployment, and production support.

Key Responsibilities

• Design, develop, test, debug, and maintain software applications and product enhancements

• Analyze business and technical requirements, identifying gaps, ambiguities, and improvement opportunities

• Build scalable and maintainable applications using established development standards and patterns

• Develop and maintain backend database logic, queries, and data structures

• Write clean, concise unit tests with appropriate code coverage

• Participate in code reviews and contribute to design discussions

• Troubleshoot production issues, isolate root causes, and implement fixes

• Collaborate closely with product, QA, and cross-functional teams in an Agile environment

• Prepare technical documentation to support development, maintenance, and troubleshooting activities

Required Qualifications

• Bachelor’s degree in computer science or any other related field

• 3+ years of software development experience

• Proven hands-on experience with .NET and C#

• Strong experience with ASP.NET MVC

• Solid experience with PostgreSQL and backend database development

• Experience conducting requirements analysis

• Experience writing unit test cases

• Ability to work effectively in Agile development environments

• Strong problem-solving, communication, and documentation skills

Nice to Have

• Experience with SQL

• Exposure to CI/CD tools such as Git and Jenkins

• Experience working in regulated environments such as healthcare, life sciences, clinical research, or pharmaceutical organizations

We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by law.

The duties and responsibilities listed in this job description represent the major responsibilities of the position. Other duties and responsibilities may be assigned, as required. Clario reserves the right to amend or change this job description to meet the needs of Clario. This job description and any attachments do not constitute or represent a contract. The Department Head has the discretion to hire personnel with a combination of experience and education, which may vary from the above listed qualifications.