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Software MindSM

(8DF) Senior Full-Stack Engineer (.NET)

Software Mind is a global digital transformation partner, providing software development services and expert teams to companies across various industries. Founded in 1999 and headquartered in Krakow, Poland, the company has expanded its operations throughout Europe, the US, and Latin America.

Software Mind

Employee count: 1001-5000

Costa Rica only

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We are seeking a Senior Full Stack .NET Engineer to join a small, high-impact engineering team responsible for building and modernizing core business applications. This role will play a critical part in developing new platforms, enhancing existing systems, and introducing automation across the organization.

You will work across the full software development lifecycle—from design and development through testing and deployment—while adhering to established coding standards and engineering best practices. The environment requires a high degree of ownership, attention to detail, and the ability to operate independently within a structured development framework.

Key responsibilities include:

  • Designing and developing full stack applications using .NET technologies, with MVC-based front-end architecture

  • Modernizing and migrating legacy Python-based logic into scalable .NET solutions

  • Building automation tools and improving operational workflows

  • Writing clean, maintainable, and well-tested code with a strong emphasis on unit testing (targeting high code coverage)

  • Collaborating closely with architecture leadership to align with system design, standards, and long-term technical direction

  • Contributing to continuous improvement of development processes, tooling, and application performance

  • Supporting and maintaining existing applications, including occasional work with legacy automation tools

This role requires engineers who are comfortable working in a lean team environment, capable of handling ambiguity, and willing to take ownership of both technical execution and delivery outcomes.

Required:

  • 5+ years of experience in software engineering with a strong focus on .NET / C#

  • Experience building full stack applications using ASP.NET MVC

  • Strong understanding of relational databases, preferably PostgreSQL

  • Experience with Entity Framework or similar ORM tools

  • Proven ability to work across the full SDLC, including design, development, testing, and deployment

  • Strong experience with unit testing and writing testable, maintainable code

  • Ability to follow structured coding standards and incorporate technical feedback effectively

  • Experience working in small teams with high ownership and accountability

Preferred:

  • Experience migrating or refactoring legacy systems (e.g., Python to .NET)

  • Familiarity with automation tools or workflow optimization

  • Exposure to Power Automate or similar low-code platforms

  • Experience working in cloud environments (Azure preferred)

  • Strong communication skills and ability to work closely with technical leadership in a highly collaborative environment

We are Software Mind, an awesome team of engineers who are ready to ramp up any top-notch company’s projects! Our aim? To always be one step ahead. Become part of a multicultural company in constant growth with an excellent work environment certified by Great Place To Work!

About the job

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Job type

Full Time

Experience level

Experience

5 years minimum

Location requirements

Hiring timezones

Costa Rica +/- 0 hours

About Software Mind

Learn more about Software Mind and their company culture.

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What began in 1999 as the vision of two ambitious Polish developers in their final years of college, eager to build interesting business apps for international markets using emerging technologies, has blossomed into Software Mind, a global digital transformation partner. For over two decades, this Krakow-based company has been at the forefront of software development, evolving from a boutique Polish software house into a significant player with a robust presence across Europe, the US, and Latin America. This journey has been marked by organic growth, strategic external investments, and key acquisitions, including companies like ValueLogic, Code Factory, Chmurowisko, Virtualmind, and number8. These moves have not only expanded Software Mind's geographical reach but also deepened its expertise and service offerings.

Software Mind's core mission is to provide organizations worldwide with the critical expertise, resources, and product engineering necessary to drive their business forward. They empower companies with skilled software engineers and autonomous, cross-functional development teams that manage the entire software lifecycle, from the initial spark of an idea to its release and ongoing support. The company prides itself on a culture that prioritizes openness, ownership, and respect, fostering a global team that is encouraged to 'crave more, act as a true partner, and deliver meaningful value'. This people-centric approach, combined with a strong technological foundation in areas like cloud computing, AI, data science, and embedded software, allows Software Mind to accelerate digital transformations and enhance software delivery for a diverse clientele that includes scale-ups, unicorns, and large enterprise-level companies. Their path has mirrored the challenges many of their clients face – navigating new markets, cultivating deep domain knowledge, and integrating cutting-edge technologies – which uniquely positions them to guide digital accelerations and engineer software that not only impacts today but also inspires tomorrow.

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Software Mind

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