Senior Full-Stack Developer

Senior Full Stack Developer

Location: Remote (European Time Zone), once per month in the office in Cracow

Contract Type: B2B

About Us:

ETFBOOK is a Swiss SaaS company providing data, analytics, and custom solutions in the Exchange Traded Funds (ETFs) space. Founded in 2020, we aim to make global ETF data accessible, actionable, and valuable for institutional participants, including ETF issuers, index providers, fund service providers, market makers, exchanges, and buy-side institutions.

We develop a platform which offers comprehensive insights through a user-friendly web application and robust APIs, covering areas such as product analysis, fund flow tracking, performance comparisons, and liquidity assessments.

About the role:

We are seeking a Full-Stack Software Developer with interest in Frontend development to join our fully remote team spread across Europe.

You’ll join a highly skilled technology team. This team develops and maintains a cutting-edge data analytics platform using most advanced technologies to support all core business functions. You’ll be a part of a collaborative team focused on the application development. This role offers the chance to make a visible impact in a dynamic, fast-evolving field.

Responsibilities:

• Develops and maintains complex end-to-end features across the latest Angular and .NET.
• Designs solutions covering front-end, backend, APIs, databases, and data processing.
• Leads solution design and requirements analysis for major initiatives.
• Ensures end-to-end performance, scalability, security, and reliability.
• Reviews code across the stack and promotes engineering standards.
• Troubleshoots complex cross-system issues and supports production stability.
• Mentors junior and mid-level full-stack engineers.

Requirements:

• 8+ years of experience in web application development.
• Strong expertise in latest Angular / TypeScript and the latest .NET/ C#.
• Strong understanding of front-end, backend, API and database architecture.
• Experience designing and delivering complex features end-to-end.
• Experience with automated testing and deployment.
• Strong understanding of application performance, scalability, and code quality.
• Experience with Azure and AI-assisted development tools.
• Good knowledge of Azure
• Works independently and takes ownership of complex tasks.
• Strong communication skills in English.
• Strong problem-solving skills.
• Able to work effectively with Product, Data and Technology teams.
• Able to review code and provide technical guidance.
• Able to mentor Junior and Mid-level engineers.
• Commitment to delivering high-quality solutions.

Nice to have:

• Experience with data visualization.
• Basics of UX/UI and ability to identify improvements.
• Interest in financial markets, especially ETFs.
• Experience with B2B SaaS products
• Able to make and explain technical decisions.

What we offer:

• 100% remote work from anywhere within the European time zone.
• Competitive B2B contract.
• Exciting growth opportunities in a fast-paced startup.
• Impactful work: help revolutionise ETF data market, currently fastest growing area of finance.
• Have a real impact of developing products: your work will directly influence live projects, delivering measurable results in real-world applications.
• Culture of innovation: collaborate with forward-thinking professionals in technology and finance where experimentation and creativity are encouraged.
• Team- buildings events at least twice a year, hosted in various European locations.