Why is this role so important at Similarweb?
We are looking for a Senior Full Stack Engineer with strong frontend and product orientation to build modern, scalable, AI-powered product experiences. This role combines deep expertise in client-side architecture and user experience with the ability to contribute across backend services, APIs, and platform infrastructure. You will work closely with product, design, backend, and data/AI teams to deliver end-to-end features while driving engineering excellence and leveraging AI throughout the development lifecycle. We are looking for engineers who are passionate about building great products, care deeply about user experience, and enjoy owning solutions from concept to production.
So, what will you be doing all day?
Full Stack Engineering
- Build end-to-end product experiences across frontend and backend systems
- Develop modern web applications using React, TypeScript, Vite, and NestJS
- Design scalable frontend architectures, reusable UI components, and shared platform capabilities
- Own complex features from concept to production across client and server layers
- Design and implement APIs, business logic, and integrations with internal and external services
- Optimize application performance, reliability, accessibility, and developer experience
- Collaborate closely with product, design, data, and infrastructure teams
- Contribute to testing strategies, observability, deployment pipelines, and platform improvements
- Lead technical decisions spanning frontend and backend domains
- Drive engineering best practices, maintainability, and scalability across the codebase
Backend & Platform Development
- Design, build, and maintain backend services using NestJS
- Define API contracts and integration patterns across systems
- Participate in architectural decisions across frontend and backend systems
- Build scalable and reliable services supporting AI-powered product experiences
- Contribute to authentication, authorization, and platform capabilities
- Understand and optimize system performance across the full stack
- Support production operations, monitoring, troubleshooting, and incident resolution when needed
Product & UX
- Translate product requirements into polished and intuitive user experiences
- Work closely with product designers to improve usability and interaction quality
- Balance speed, quality, technical excellence, and business impact
- Advocate for accessible, user-centric, and data-informed interfaces
- Contribute product ideas and technical insights throughout the product lifecycle
Technical Leadership
- Provide technical leadership across frontend and backend domains
- Mentor engineers and conduct high-quality code reviews
- Drive architectural discussions and engineering best practices
- Improve testing, observability, CI/CD, and application reliability
- Promote ownership and accountability from design through production
- Help establish scalable engineering processes and standards
AI-Augmented Engineering
- Use AI coding tools effectively (Cursor, Copilot, Claude, ChatGPT, etc.)
- Critically evaluate, validate, and improve AI-generated code
- Design efficient workflows for AI-assisted development
- Integrate AI capabilities into product experiences where relevant
- Understand the limitations, risks, and tradeoffs of LLM-based systems
- Contribute to engineering productivity through AI tooling and automation
- Collaborate with AI and data teams to build AI-native product experiences
This is the perfect job for someone who:
- 5+ years of software engineering experience
- Strong experience building production-grade web applications across frontend and backend layers
- Expert-level proficiency in React, TypeScript, HTML, and CSS
- Experience developing backend services using Node.js, NestJS, or similar frameworks
- Strong understanding of API design, authentication, and integration patterns
- Experience designing scalable frontend architectures and reusable component systems
- Deep understanding of state management, rendering, caching, and performance optimization
- Experience working with REST APIs and modern frontend data-fetching patterns
- Strong understanding of web application performance, accessibility, and responsive design
- Experience with testing methodologies, monitoring, and observability practices
- Strong product mindset and user experience intuition
- Excellent communication, collaboration, and problem-solving skills
AI & Modern Engineering
- Hands-on experience using AI development tools in daily workflows
- Ability to validate, debug, and improve AI-generated code
- Understanding of prompt engineering for software development workflows
- Familiarity with AI-powered product patterns and user experiences
- Ability to work effectively in fast-paced, iterative environments
Nice to Have
- Experience building AI-native or AI-assisted product experiences
- Experience integrating LLMs, agents, RAG systems, or AI platforms into products
- Experience working in high-growth SaaS or product-driven companies
- Familiarity with cloud infrastructure and modern DevOps practices
- Experience with analytics, experimentation, and product measurement frameworks
What We’re Looking For
A product-minded engineer who enjoys building exceptional user experiences while owning technical solutions end-to-end. Someone who can comfortably move between frontend, backend, architecture, and product discussions, leverage AI effectively in their workflow, and help shape the next generation of AI-powered products