Senior Backend Developer (Platform team)

About Smartcat

Smartcat is building the future of work, where human expertise meets digital teammates to drive 10x to 1000x productivity gains for the world’s leading enterprises.

We’re on the frontier of an entirely new category: Agentic AI. We enable enterprises to build high-performing hybrid workforces made up of both humans and AI agents. These AI agents aren’t generic copilots. They’re fully trained digital teammates that learn from your best people, your content, and your business strategy—ready to get to work from day one.

Our platform combines generative AI, human-in-the-loop workflows, and a living Enterprise Skill Graph that continuously learns and improves. Whether you're launching a product globally, onboarding new hires, translating learning content, or aligning legal teams across regions, Smartcat turns knowledge into action and action into scale.

Over 1,000 companies, including 20% of the Fortune 500, rely on Smartcat to bring their business to the world—instantly, accurately, and in every language. As a Series C company with 130% year-over-year growth, we’re scaling fast and investing in people who want to shape the future of work with us.

Join us in unlocking global potential, one human and agent team at a time.

Smartcat was founded in 2016 to help global enterprises create and manage their multilingual content. Today, Smartcat is the essential language AI platform for the global enterprise. 

Our client-tailored language AI turns content in any format into any language, from documents to videos to complex websites and software, making global operations simple for any corporate team. It also allows any user to create new content by tapping into a multilingual enterprise library. 

More than 1,000 global companies including 25% of the Fortune 500 trust Smartcat to communicate their innovations and ideas all over the world.

Smartcat’s vision is to realise a world where there is equal access to innovations and ideas. 

Smartcat is backed by Matrix Partners, FJ Labs, and other leading VC firms focusing on SaaS, marketplaces and AI. You might recognize names like HubSpot, Zendesk, Uber, Stripe, RigUp, and Quora in their portfolios. Despite the economic recession, Smartcat is growing at 150% YoY. It's well-funded and capital efficient, providing a unique combination of a hyper-growth environment with downside protection and the ability to think and plan long-term.

Mission

Your mission will be to maintain and improve existing functionality and develop new application parts. This position will be remote-based in Europe. Ideal locations include: Serbia, Armenia, Bulgaria, Georgia and Romania.  

Outcomes 

• Deliver value for our customers 
• Improve the stability and observability of our product
• Develop parts of the application: design, refactoring, fixing bugs, and writing tests to maintain the quality and functionality of the product and libraries
• Review code and share knowledge with the team 

Requirements 

• Experience in .NET development and test coverage 
• Knowledge of OOP principles and design patterns  
• Experience with Database concurrency
• Upper-Intermediate English: both written and spoken
• A data-driven approach. Ability to justify decisions using concrete metrics
• Integrity and full commitment
• Growth mindset
• Readiness to work in an intense startup environment requiring extreme focus, a strong sense of ownership, and determination to break through
• Openness to constructive feedback and the opinions and ideas of others
  

Our technologies

• PL: .NET Core
• DB: MongoDB, PostgreSQL
• Hosting in the AWS 
• Elasticsearch cluster, indexes for several billion documents
• ELK (EFK) for logging, VM, Prometheus and Grafana for metrics and monitoring

Why joining Smartcat might be your best move so far

• Fully remote team
  We are a global team of 200+ enthusiastic people spread across 30 countries. We have been fully remote since 2020, with some locations populated with more Smartcatters than others, such as Boston, NYC, SF, the Bay Area, London, Lisbon, and Yerevan.
• Innovating the $50 Billion-old industry
  Smartcat’s innovative business model taps into this $50B language translation industry with a platform allowing enterprise end users to stop using traditional outsourcing and enjoy easy-to-use AI-powered SaaS that delivers immediate high-quality results at a fraction of the c