ZennoPoster/BAS Developer in ST Staffwork

About us:
FraudFinder is an international team of experts bringing analytics and security technologies to the mobile world. We discover vulnerabilities in SMS delivery systems, develop systems for monitoring and blocking malicious traffic. Our solutions help telecom giants around the world save millions, improve reliability and protect end users.

We are currently looking for a BAS Developer to strengthen our R&D team, where instead of routine tasks, there are challenges that no one has solved yet.

Your role:
You will develop and improve automated scripts in BAS (Browser Automation Studio) / ZennoPoster for testing and analyzing telecom services, bypassing anti-fraud systems, integration with web and mobile interfaces, as well as imitating various types of users.

Main duties:

• Development and optimization of automated scripts (work with web interfaces, JavaScript processing, work with API) in BAS/ZennoPoster.

• Bypassing modern security systems: captcha, Cloudflare, Akamai, and others anti-bot solutions.

• Integration of scripts with internal systems via REST API and Python services.

• Working with mobile emulators, proxy servers and anonymity settings.

• Optimization of productivity and stability of automation systems.

• Documentation of technological solutions and processes.

We are looking for someone who has:

• Automation experience (3+ years) using BAS, ZennoPoster or other tools (Playwright, Puppeteer, Selenium).

• Ability to work with HTTP/HTTPS, WebSocket, DevTools, configure cookies, headers, user-agent.

• Understanding the principles of client-server interaction and working with APIs.

• Knowledge of Python for data integration and processing will be a strong plus.

• Analytical mindset, search for non-standard solutions, attention to details.

It will be ideal if you also:

• Had experience in the field of security, anti-fraud systems or mobile traffic analysis.

• Know how to circumvent complex protections (interactive captchas, JS-challenges, behavioral analysis).

• You have a basic understanding of Linux, Docker, CI/CD or reverse engineering principles.

We offer:

• Work inglobal product company, where your decisions affect iindustry.

• Remote format and flexible schedule - work from anywhere in the world.

• Competitive salary + bonuses for the result and depth of solved tasks.

• R&D environment: your main tasks will be research and breakthrough solutions.

• Direct communication with technical leaders — without bureaucracy and unnecessary levels of approval.

• Career trajectory in the field cyber security, reverse engineering and mobile analytics.

• Opportunity to work with modern stacks and complex technological challenges.

If you want:
Don't write another parser, and resolve the logic of complex defenses;
Not perform TOR, but determine the technological strategy together with the team - you are up to us.