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Middle JavaScript Developer (Cybersecurity Platform)

Remote: 
Full Remote
Contract: 
Full time
Experience: 
Mid-level (2-5 years)
Work from: 
Poland

Offer summary

Qualifications:

3+ years pure JavaScript/TypeScript, OOP knowledge, browser APIs, CS fundamentals, CI/CD pipelines experience, HTTP/WebSocket protocols.

Key responsabilities:

  • Support, fix script on publisher sites
  • Write functional tests using Selenium
  • Enhance script performance, effectiveness
  • Perform investigative tasks to resolve issues
Sigma Software Group logo
Sigma Software Group Large https://www.sigma.software
1001 - 5000 Employees
About Sigma Software Group
Sigma Software Group, an award-winning and trusted IT partner, has been serving customers for over 21 years, providing comprehensive IT solutions to various businesses, ranging from startups to established software product houses. As one of Europe's substantial IT consultancies, it brings together a dedicated workforce of over 2,100 professionals in 40 offices across 19 countries. With a diverse client base, including more than 300 enterprises, including Fortune 500 stalwarts, Sigma Software Group is a preferred choice for developing solutions that help businesses create cutting-edge products while meeting their unique needs.Sigma Software Group operates as a dynamic ecosystem of tech companies, offering 25 ready-to-implement innovative products and 40+ value-added services. Furthermore, Sigma Software Group is committed to fostering innovation through initiatives such as the Sigma Software Labs business incubator, Sigma Software University, the SID Venture Partners VC Fund, UA Tech Network, Techosystem, the European Business Association, and other collaborative efforts.Since 2015, Sigma Software Group has consistently earned recognition on the IAOP's prestigious World's Top 100 Outsourcing list. The company's accomplishments have also been acknowledged by prominent global media outlets such as Forbes, CNBC, The Times, and Reuters.
See more Sigma Software Group offers

Job description

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Your missions

Company Description

We are seeking a JavaScript Developer for our product focused on mitigating malicious ads in digital advertising.  

Our core tool is a script designed to detect and block harmful or unauthorized ads. This script is deployed on publisher websites to identify malicious ads and is also integrated into certain ads served by SSPs to publishers.  

Sounds interesting? Join us!

CUSTOMER

Our client is a Brooklyn-based company founded in 2012. Starting from humble beginnings, the company developed the Defense Platform, the cornerstone of all our products, which protects enterprises from advanced bot attacks, fraud, and account misuse. Today, we authenticate more than 20 trillion interactions every week for large companies and leading online platforms, verifying their authenticity.  

Job Description
  • Support the Script: Address and fix issues as they arise on publisher sites 
  • Develop Functional Tests: Write functional tests using Selenium 
  • Improve Script: Enhance and refine the script to improve performance and effectiveness 
  • Investigative Tasks: Perform various investigative tasks to address and resolve issues 

Qualifications
  • 3+ years working with pure JavaScript/TypeScript 
  • Good knowledge of OOP 
  • Knowledge of what the iFrame element is 
  • Knowledge of different browser APIs 
  • Knowledge of CS fundamentals, algorithms, and data structures 
  • Basic understanding of HTTP and WebSocket protocols 
  • Experience building CI/CD pipelines on GitHub and/or GitLab and/or Bitbucket 
  • Upper-Intermediate or higher level of English  

WOULD BE A PLUS

  • Experience with obfuscation and deobfuscation 
  • 1+ years of experience with any web driver-based technology (selenium, puppeteer, etc.) 
  • Good understanding of code transformation tools and/or bundlers 
  • Bulletproof coding skills in terms of "can"/"cannot", not "should"/"should not" 

Additional Information

PERSONAL PROFILE 

  • Readiness to take ownership of problem-solving  
  • Independence and self-reliance 
  • Good communication skills to collaborate with distributed teams 

Required profile

Experience

Level of experience: Mid-level (2-5 years)
Spoken language(s):
Check out the description to know which languages are mandatory.

Hard Skills

TypeScriptData StructuresBundlerWebSocketJavaScript (Programming Language)Http ProtocolsSelenium (Software)AlgorithmsProgramming ConceptsWeb Browser EngineCI/CDObject-Oriented Programming (OOP)

Soft Skills

  • Verbal Communication Skills
  • Problem Solving
Are you interested?

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