Remote Source

    Senior Software Engineer - .NET Core/AWS

    Costa Rica
    Full-Time
    Senior (7+ yrs)
    Engineering & Development
    Posted on May 20, 2026

    🌟 Distinguished Tech Innovator:

    3Pillar warmly invites you to join an elite team of visionaries. Beyond software development, we are dedicated to engineering solutions that challenge conventional norms. Envision you: steering projects that redefine urban living, establish new media channels for enterprise companies or drive innovation in healthcare. Your invaluable expertise will serve as the cornerstone in shaping the future direction of our endeavors.

    This role transcends the ordinary realms of coding; it's about orchestrating technological marvels that disrupt industries. Seize this extraordinary opportunity in a team that is actively shaping the tech landscape for our clients, and set global standards along the way. 🌍🔥

    KEY RESPONSIBILITIES
  1. Independently work in a technical direction and implementation in a team within a defined architecture in all stages from conceptualization to deployment.
  2. Evaluate trade-offs between correctness, robustness, performance, and customer impact to ensure the development of the right solution, with client success at the forefront.

  3. Collaborate with product, design, and engineering teams to provide necessary oversight of architecture and dependencies influencing product strategy and direction.

  4. Contribute to code reviews, documentation, and addressing complex bug fixes with a focus on security, performance, and reliability.

  5. REQUIREMENTS
  6. A minimum of 7+ years of experience/expertise working as a Full Stack Engineer, with proficiency in the specified technologies.

  7. .NET CORE, C# / .NET 6+ with +3y experience

  8. Solid on working on AWS Cloud environments +3y experience (Lambdas, EKS, SQS)

  9. Solid on working with Relational and NoSQL experience DBs +3y experience each - SQL Server, MongoDB

  10. Experience working with Agile methodologies

  11. Solid experience working with microservices.

  12. Experience with Docker / Containerization - Kubernetes

  13. Solid experience working with APIs +3y experience

  14. Solid experience working with Unit Testing +2y experience

  15. Experience working with Object Oriented Programming and SOLID Principles

  16. Solid experience with multiple design patterns, theory, practice breaking down complexity, and their implementation.

  17. Ability to coach, help, and support peers, provide an accurate estimation of work
  18. CodeCommit

  19. GIT
  20. A high level of English proficiency is required to interact with a globally-based development team.

  21. Demonstrated experience following and adapting high-level architecture to project and client needs.

  22. Ability to verify/validate architecture implementations and influence overall architecture beyond the team.

  23. Expertise in applying object-oriented programming, with preferred experience in languages like Java/C#.

  24. High-level design proficiency following UML / C4 / ArchiMate.

  25. Experience in effectively working collaboratively among relevant information stakeholders to create and implement well-tested, scalable, secure, and performant enterprise-level systems that ultimately deliver the client’s desired business outcome.

  26. Demonstrated initiative in mentoring other engineers and decision-makers throughout the organization.

  27. Very good knowledge of architectural styles and design patterns, SOLID principles, and OWASP.

  28. ADDITIONAL EXPERIENCE DESIRED

  29. Ability to provide technical orchestration among the overall tasks.

  30. Experience in building CI/CD pipelines.

  31. Knowledge of building Cloud Native applications.

  32. Grafana (nice to have)
  33. BENEFITS
  34. Medical Insurance benefits as per company policy.
  35. Life Insurance as per company policy
  36. 12 days of paid vacation, sick leave and paid holidays as per local law
  37. Paternity and maternity leave as per as per local law
  38. Marriage, bereavement and graduation leaves as per company policy
  39. Sick leave and paid holidays as per local law
  40. Christmas bonus as per local law
  41. Saving Fund “Asociacion Solidarista”
  42. Beach house (Managed by the Asociacion Solidarista)
  43. Discounts in local shops
  44. Direct deposit of payroll.
  45. Paid professional certifications
  46. #Li-remote
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    Company:  3Pillar

    Product development and digital transformation services firm.
    1001-5000 employees
    Software & IT Services
    HQ: United States