Senior Go/Python Developer

AI overview

Maintain and optimize data-intensive applications processing billions of events using Go and Python, while actively improving systems and collaborating across teams.

About Klar

Let’s start with the basics! Klar is a Mexican fintech startup whose mission is to democratize and revolutionize the way in which financial services have been delivered so far in Mexico, especially since half of the population doesn’t have a bank account. We offer a rich set of products across our debit and credit offers and the future is bright for Klar! We have an exciting and ambitious roadmap to bring more features to our products so that we can better serve our users. We have served more than 2 million users since our launch in 2019! 


We are also proud to have been certified in 2023 as a “Great Place to Work” in Mexico - we’ve worked hard to make that happen and will continue to make bigger strides in the future! Sound like a place you’d like to be?


Our people

If you join us at Klar, you’ll be welcomed to a team which is rich in many talents and we are very proud! With our head office in Mexico City, and remote tech hubs in Berlin and Argentina, we are always learning something new about another culture or language. With so many people from different backgrounds and walks of life (young professionals, parents, LGBTQ+, neurodivergence), you’ll definitely find your people here! 


Our values

  • Ownership - We own our successes & our failures as a team.
  • Excellence - We do everything to the best of our ability & always seek to achieve a new level of excellence in our work.
  • Inclusion - We believe we are stronger together and actively work to promote a safe, diverse, inclusive, and respectful culture.
  • Customer Obsession - We understand the value Klar can bring to its customers & it’s always at the forefront of our decisions.
  • Klarity - We communicate clearly & with authenticity. It’s in our name & it’s what we do.


The position and your daily adventures

We are looking for a Senior Go/Python Developer who demonstrates strong ownership end-to-end. This means proactively anticipating problems before they surface, deeply understanding how the business operates, and how decisions made in one team impact others across the organisation. You won’t wait for detailed instructions — instead, you’ll actively identify opportunities to improve systems, performance, and processes, and take initiative to drive solutions forward. You are comfortable challenging assumptions, collaborating closely with product, data, and infrastructure teams, and going beyond your immediate scope to ensure outcomes are reliable, scalable, and aligned with business goals.


You will be responsible for maintaining many data-intensives applications that process billions of events. This role requires a profound understanding of Go/Python programming, strong problem-solving skills, and the ability to work effectively in a collaborative team environment. 


This is a full-time position remote position based in Argentina. 


What you can expect:

  • Maintain high-performance, scalable, and reliable applications using the Go and Python programming languages.
  • Write clean, maintainable, and efficient code.
  • Participate in code reviews and ensure code quality.
  • Troubleshoot and debug issues in production environments.
  • Optimize applications for performance and scalability.


What we are looking for:

  • Bachelor's degree in Computer Science, Engineering, or a related field.
  • 7+ years of experience in overall software development.
  • 5+ years of experience with Go & Python programming language.
  • Proven experience building data-intensive applications.
  • Strong understanding of data structures, algorithms, and design patterns.
  • Experience with Kafka.
  • Familiarity with cloud platforms AWS.
  • Excellent problem-solving and debugging skills.
  • Strong communication and collaboration skills.
  • Familiarity with observability tooling, like Prometheus and Grafana.


Our offer to you:

  • Competitive salary based on performance and experience
  • Chance of earning Klar stock options
  • 26 days of paid vacation per year
  • Computer devices
  • Wellhub subscription to offer mental and physical health
  • Sponsored coaching and therapy sessions via Modern Health
  • International work environment with amazing and highly skilled people
  • A world class team that helps you evolve your skills in areas you're interested in


Klar is a safe place for everyone!

We trust our highly skilled and diverse team and we’re committed to creating a welcoming and inclusive environment for new talents to flourish. We value diversity and welcome all applications regardless of gender, nationality, ethnic and social origin, religion/belief, physical abilities, age, sexual orientation and identity.


Should you require any accommodations through the recruitment process, please don’t hesitate to let us know how we can help!

Perks & Benefits Extracted with AI

  • Coaching and therapy sessions: Sponsored coaching and therapy sessions via Modern Health
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