Fullstack Software Engineer (JavaScript / Node.JS)

We’re building a cross-browser Fingerprint SDK and a high-performance backend for fraud detection and risk analysis. 

We’re looking for a Software Engineer who enjoys
working close to the browser, handling large-scale data, and solving non-trivial engineering problems.

DARLY SOLUTIONS is an international IT company specializing in delivering innovative solutions across FinTech, MedTech, SaaS, etc.

With years of experience in web and mobile development, UI/UX design, Quality Assurance, AI, and machine learning, we pride ourselves on creating impactful products that drive success for our clients.

Since 2018, we have successfully completed over 250 projects.
Examples of our work across various domains can be found on our website - https://www.darly.solutions/

We leverage cutting-edge technologies to craft powerful, forward-thinking solutions tailored to our clients’ needs. Our team is proficient in a diverse range of tools, including Angular, NestJS, React, Vue, PHP, Ruby, NodeJS, and many others.
 

What You’ll Work On
- Develop and maintain a cross-browser Fingerprint SDK using Vanilla;
- JavaScript/TypeScript, focused on performance, accuracy, and resilience against ad blockers and privacy restrictions;
- Build backend services with Node.js (Express) to process and analyze large volumes of collected data;
- Work with ClickHouse for analytical workloads and MySQL for transactional data;
- Design and optimize raw SQL queries for high-performance data access;
- Contribute to fraud detection and risk analysis systems by identifying patterns and anomalies in data.

What We’re Looking For
- 3+ years of experience with JavaScript/TypeScript and raw Node.js (Express)
- Strong experience with JavaScript in the browser

- Experience writing and optimizing raw SQL queries
- Familiarity with high-volume data processing or analytics systems
- Bonus: experience with fingerprinting, anti-fraud systems, or cybersecurity

Nice to Have
- Experience dealing with ad blockers, tracking prevention (Safari/Firefox), or
similar constraints
- Background in security, fraud detection, or risk analysis

What we offer:

- Flexible work format - remote, 8-hour working day without time trackers;
- Competitive salary;
- TIght-knit and friendly team;
- Personalized career growth;
- Up to 50% coverage of the cost of professional courses;
- Vacation time, sick-leaves, national holidays ;
- Competitive bonuses for a personal recommendation of new employees;
-Professional development tools (mentorship program, tech talks and workshops);
- English classes with a teacher;
- Corporate events and team buildings.