Software Engineer

Sofia, Sofia City Province, Bulgaria

LatticeFlow

Accelerate your production models with robust and trustworthy AI LatticeFlow

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About Us 💡

At LatticeFlow AI, we’re on a mission to build robust, trustworthy AI systems that transform how we work, live, and solve problems. Our work has earned global recognition, including the US Army Global Award and a place on CB Insights’ AI100 list of the world’s most innovative AI companies.

Our platform helps companies conquer “The Last Mile of AI”—the critical gap between developing AI and delivering real-world, production-ready solutions. Whether it’s ensuring compliance with the latest regulations, validating complex systems, or monitoring performance under real-world conditions, LatticeFlow AI delivers results that companies and users can trust.

We believe the heart of innovation lies in our people. Our team culture empowers exceptionally talented individuals to do their best work, free from unnecessary obstacles. Together, we’re shaping the future of AI, guided by principles that prioritize transparency, collaboration, and bold, forward-thinking ideas.

Our team is growing and we are looking for a Mid/ Senior Software Engineer, to help us solve some of the most exciting and meaningful challenges in AI today. 

Requirements

Your Role at LatticeFlow AI  ♟️

As a member of our team, you’ll have a central role in designing, building, and scaling our product core backend infrastructure, focused on data management and MLOps integrations. 

Key Responsibilities:

  • Develop, maintain, and iterate on core backend infrastructure.
  • Collaborate with and support FE, ML, and QA Engineers on designing and building integrations to 3rd party MLOps tools.
  • Participate in product discussions and help deliver secure, robust, responsive, and scalable systems.
  • Optimize application performance and troubleshoot complex issues in production environments.
  • Help make decisions about our backend tech stack.

What you’ll bring to our team?

  • Fundamental knowledge of databases (PostgreSQL, Redis), networking, computer architecture and other backend technologies (e.g. caching, Ngnix, OAuth, …).
  • Strong proficiency in Python or another non-functional programming language and related tools for backend development.
  • Experience in building secure, scalable and reliable systems.

Preferred Qualifications

  • Familiarity with cloud platforms (AWS, Azure, GCP) or MLOps tools is a plus.

Soft Skills and Competencies

  • Strong motivation, self-drive, and a desire to work in an energetic and fast-paced environment.
  • Proactive and mentality for getting things done.
  • Constant urge to optimize things.

Benefits

Why LatticeFlow AI? ⭐

  • Work on challenges that genuinely matter, shaping the future of AI in industries like healthcare, defense, and manufacturing.
  • Gain hands-on experience solving complex problems with world-leading organizations.
  • Work alongside domain experts and leaders in their fields. As an ETH Zurich spin-off, we bring deep academic roots and entrepreneurial spirit. Our team includes people from over 12 nationalities, fostering a truly global and collaborative environment. At LatticeFlow AI, you’ll be part of an inclusive team where everyone feels valued and empowered.
  • Exceptional Benefits & Perks:
    • 25 days of paid vacation.
    • Learning & Development Coverage: We’ll support your growth by funding courses, trainings, or events that benefit both you and the company.
    • Private Health Insurance: Enjoy peace of mind with additional  health coverage.
    • Travel Perks: Our offices in Sofia and Zurich are amazing—prime locations with warm, collaborative environments. To foster connection between teams, we offer a travel pocket for self-organized trips between these locations.
    • Active Lifestyle: Join our company running club to stay active and connect with colleagues outside of work.
    • Team Events & Get-Togethers: Build deeper connections with the team at our regular events and annual retreats. Last year, we had an unforgettable trip to Lake Como in Italy!


Did we catch your attention?

If this role and our mission resonate with you, but you're hesitant because you don't check all the boxes, don't let that hold you back. Apply for the role below, we’d love to meet you and discuss and share more!

LatticeFlow AI is an Equal Opportunity Employer. 


Eligibility to work in either Bulgaria or Switzerland is required. Please submit your application in English.

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* Salary range is an estimate based on our AI, ML, Data Science Salary Index 💰

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Category: Engineering Jobs

Tags: Architecture AWS Azure Data management GCP Machine Learning MLOps PostgreSQL Python

Perks/benefits: Career development Health care Team events Transparency Travel

Region: Europe
Country: Bulgaria

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