Senior Fullstack Developer (C#, JS) Lisboa

Senior Fullstack Developer (C#, JS)
Lisboa
Lisboa, Lisboa, Portugal

3 weeks ago Be among the first 25 applicants

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.

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
- 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,
-
-
- 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 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.

Mission

As a Senior Fullstack Engineer at Smartcat, you'll be at the forefront of shaping our platform's future. You'll lead the development of
- edge features, optimize our application's performance and scalability, and ensure our growing global client base enjoys an exceptional user experience.

Team - Growth

• Experience working in a growth team, implementing projects with
  - ended technical requirements, and the ability to solve problems on the fly.
• Skilled in working with data and understanding the principles of product analytics and A/B testing.
• Ability to quickly adapt to changes, collaborate effectively with other departments, and formulate technical solutions aligned with business goals is essential.
• Willingness to learn new technologies and tackle tasks in conditions of uncertainty.
  
  

• Design, develop, and deploy backend services and APIs that solve
  - world customer challenges
• Optimize application performance, scalability, and security
• Collaborate with product managers, frontend engineers, and Dev
  Ops to ensure seamless integration of services
• Troubleshoot and resolve production issues efficiently
• Actively participate in code reviews, knowledge sharing, and continuous learning
  
  

• 7+ years of proven professional experience as a Software Engineer, with at least 3 years in. NET and C#
• 2+ years of experience in product companies (Saa
  S)
• 2 years of commercial experience with modern web frameworks like React/Angular/Vue
• Passion and strong skill for writing clean, maintainable, and testable code and
  - documented C# code
• Experience with writing and maintaining Unit tests and E2E tests
• Advanced experience with Mongo
  DB
• Upper-intermediate or higher English proficiency
• Experience with usage of the LLM-based solutions in daily workflow (Chat
  GPT, Co
  Pilot, Jet
  Brains AI Assistant, etc).
• Understanding of vector databases, embeddings, and RAG implementations
• Strong
  - solving skills and a growth mindset
• Experience working in a growth team, implementing projects with open technical specifications, and the ability to solve problems "on the fly. "
• Proficient in data analysis, with an understanding of product analytics principles and A/B testing.
• Ability to quickly adapt to changes is crucial.
• Effectively collaborate with other departments.
• Formulate technical solutions aligned with business goals.
• Willingness to learn new technologies and solve problems in uncertain conditions.
  
  

• Frontend: Vue. js 2/3, Nuxt 3, Typescript
• Backend:. NET Core (C#), Python
• Databases: Mongo
  DB, Postgre
  SQL, Elasticsearch
• Messaging Queue: Kafka
• Cloud Provider: Amazon AWS
• Monitoring & Logging: ELK (EFK), Prometheus, Grafana
  
  

• 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, NYC, SF, the Bay Area, London, and Lisbon.
• Innovating a $100 Billion industry Smartcat's innovative approach towards multilingual content, taps into a $100B industry. Our platform enables enterprise end users to stop using traditional outsourcing methods, and start enjoying an
  -
  - use, AI-powered Saa
  S, that delivers immediate
  - 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
  - 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
  - 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
  - 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% Yo
  Y, thanks to our strong
  - market fit and
  - 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 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.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  Technology, Information and Internet

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