AI First Developer
9 hours ago
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.
Senior Backend Developer 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
- 5+ years of 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 cost. - High impact role enabling innovation and inclusion in organizations
You will enjoy building with us. You will drive changes in how an old-fashioned global language industry operates while improving how hundreds of thousands of people work and millions of people exchange knowledge and ideas worldwide. - Join the rocketship to scale-up 10x and beyond together
We are looking for someone to become an integral part of our team and play a crucial role in the most exciting part of our journey: transitioning from a post-Series B startup to a company exceeding $100M in ARR and $1B in valuation. Our journey isn't for the faint of heart. We are growing at 150% YoY, thanks to our strong product-market fit and high-performing team. - Smartcat Culture: Where Diversity Meets High Performance
At Smartcat, we are committed to building a culture that highlights respect and appreciation for each individual's unique background and perspective, while maintaining a strong focus on results and clear, honest and direct communication. We believe in welcoming everyone and fostering an inclusive environment where team members can be their authentic selves at work. Our commitment to diversity and inclusion is steadfast, and we stand firmly against discrimination and harassment.
- 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 Smartcaters than others, such as Boston, Belgrade, Lisbon, Tbilisi and Yerevan. - Be part of an AI Native Organization
We are highly innovative, using AI across all areas of the organization to accelerate decision-making and free people to focus on strategy and high-impact work. We embrace new ideas and encourage all Smartcaters, regardless of level or department, to manage their own AI Agents. At Smartcat you'll shape how AI transforms the workplace and play an integral role in ensuring Smartcat remains a leader in AI innovation. - Innovating a $100 Billion industry
Smartcat is reshaping the $100B multilingual content industry with an AI-powered platform that makes it easy for companies to create, translate, and localize global content at scale. Our platform enables enterprise teams to move away from slow, traditional outsourcing methods, and achieve fast, high-quality results, at a fraction of the cost. - Join the rocketship to scale-up 10x and beyond together
We are looking for someone to become an integral part of our team and play a crucial role in the most exciting part of our journey: transitioning from a post-Series C startup to a company exceeding $100M in ARR and $1B in valuation. Our journey isn't for the faint of heart. We are growing at 130% YoY, thanks to our strong product-market fit and high-performing team, and plan to accelerate from here. - Smartcat Culture: Where Diversity Meets High Performance
At Smartcat, we are committed to building a culture that highlights respect and appreciation for each individual's unique background and perspective, while maintaining a strong focus on results and engagement. We believe in welcoming everyone and fostering an inclusive environment where team members can be their authentic selves at work. Our commitment to inclusion is steadfast, and we stand firmly against discrimination and harassment.
-
AI First Developer
9 hours ago
Belgrade, Central Serbia Smartcat Full time €80,000 - €120,000 per year*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...
-
Customer Success Manager
9 hours ago
Belgrade, Central Serbia Siena AI Full time 40,000 - 120,000 per yearMeet SienaSiena is the first intelligence layer for customer experience. We're creating an operating system of AI agents that learn, remember, and act across every customer touchpoint—from support conversations to shopping experiences to voice and social media interactions.Siena doesn't just automate support; it powers shopping agents, builds persistent...
-
Head of AI
9 hours ago
Belgrade, Central Serbia Smartcat Full time €150,000 - €250,000 per yearAbout SmartcatSmartcat 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...
-
Middle AI Engineer
2 weeks ago
Belgrade, Central Serbia CloudLinux Full time 30,000 - 60,000 per yearCloudLinuxis a global remote-first company. We are driven by our principles:do the right thing,employees first,we are remote first, andwe deliver high volume, low-cost Linux infrastructure and security products that help companies to increase the efficiency of their operations. Every person on our team supports each other and does what we can to ensure we...
-
Creatives AI Artist
9 hours ago
Belgrade, Central Serbia Playrix Full time €30,000 - €60,000 per yearAbout the companyPlayrix is one of the most successful mobile game development companies in the world. In terms of mobile application revenue, we rank first in Europe and are in the top 3 worldwide. Our games have been installed 2.3 billion times (that's a third of the world's population), and more than 30 million people around the world play them every...
-
Machine Learning Engineer
9 hours ago
Belgrade, Central Serbia EchoTwin AI Full time €40,000 - €80,000 per yearCompany OverviewEchoTwin AI is pioneering AI-driven infrastructure intelligence, redefining how cities are managed. Powered by a proprietary visual intelligence engine with full spatial reasoning, EchoTwin transforms municipal fleets into mobile urban sensors—creating living digital twins that provide real-time insights into infrastructure, compliance, and...
-
Full Stack PHP Developer
2 weeks ago
Belgrade, Central Serbia First Line Software Full time €30,000 - €60,000 per yearAbout the CompanyFirst Line Software works with some of the world's top businesses and organizations in industries like healthcare, data engineering, warehouse automation, retail digitalization, mobile app development, and e-commerce. Our projects are as varied as our people, and our people are as talented as they come. We prefer working as a transparent and...
-
Developer Experience
9 hours ago
Belgrade, Central Serbia Cloudlinux Full time 15,000 - 60,000 per yearCloudLinux is a global remote-first company. We are driven by our principles: do the right thing, employees first, we are remote first, and we deliver high volume, low-cost Linux infrastructure and security products that help companies to increase the efficiency of their operations. Every person on our team supports each other and does what we can to ensure...
-
First-Line Customer Technical Support Engineer
9 hours ago
Belgrade, Central Serbia Speechmatics Full time 30,000 - 60,000 per yearThe RoleAs a First Line Technical Support Engineer, you will provide high-quality support to both internal and external customers, working closely with our skilled R&D teams to resolve software and system issues quickly. You will address customer requests, ensuring exceptional service delivery. Strong communication, analytical, and problem-solving skills,...
-
First-Line Customer Technical Support Engineer
9 hours ago
Belgrade, Central Serbia Speechmatics Full time €30,000 - €60,000 per yearThe RoleAs a First Line Technical Support Engineer, you will provide high-quality support to both internal and external customers, working closely with our skilled R&D teams to resolve software and system issues quickly. You will address customer requests, ensuring exceptional service delivery. Strong communication, analytical, and problem-solving skills,...