

Job Overview:
We are seeking an experienced JavaScript Reverse Engineer with deep expertise in reverse engineering obfuscated JavaScript code and bypassing modern web security techniques. This role requires a strong background in both JavaScript and Python, as well as advanced knowledge of browser automation and fingerprinting bypass techniques.
Key Responsibilities:
- Reverse engineer and deobfuscate JavaScript code and APIs for web scraping.
- Bypass popular anti-bot solutions such as Akamai, Datadome, Incapsula, Cloudflare and PerimeterX.
- Work with fingerprinting bypass methods, including TLS and Canvas fingerprinting.
- Reverse engineer and bypass JS Virtual Machine Protection (VMP) techniques.
- Implement custom Captcha solving solutions, utilising frameworks such as YOLO v8 or EfficientNet.
- Employ advanced browser automation techniques to optimise performance while bypassing web fingerprinting methods.
- Work with network engineering principles and have an in-depth understanding of the TCP/IP stack.
- Utilise MITM (Man-in-the-Middle) techniques to inspect and analyse Android app network traffic for scraping purposes.
- Leverage Python for scripting, automation, and integration with reverse engineering tasks.
Required Skills and Qualifications:
- 5+ years of experience with JavaScript and Web Scraping.
- Proven expertise in reverse engineering obfuscated JavaScript code and APIs.
- Strong knowledge of bypassing anti-fingerprinting techniques, including TLS and Canvas fingerprinting.
- Prior experience in overcoming anti bot solutions like Akamai, Datadome, Incapsula, and PerimeterX.
- Adequate understanding of JavaScript Virtual Machine Protection (JS VMP).
- Experience with custom Captcha solving solutions such as YOLO v8 or EfficientNet.
- Expertise in browser automation for efficient bypass of fingerprinting.
- Solid foundation in network engineering, with deep knowledge of the TCP/IP stack.
- Experience in using MITM techniques to inspect network traffic, especially for Android apps.
- Proficiency with containerisation and orchestration tools like Docker and Kubernetes.
Preferred Qualifications
- Experience working with security research and web vulnerability assessments.
- Familiarity with web scraping ethical guidelines and best practices.
- Strong collaboration skills and ability to work in an agile team.

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About us: our client is a deep-learning software company that specializes in conversational interfaces to solve specific, high-impact problems in the enterprise. our client is building fundamental AI technology across a broad area of neural networks, speech synthesis, and deep learning to make conversational computing for the enterprise a reality.
conversational AI platform is designed to make computers understand humans. our client enables large enterprises to deploy high-impact conversational assistants, offering vertical-specific solutions in various regulated industries, such as healthcare, finance, telecommunications, and others.
More about us:
- Working Experience of Ruby on raiils
- MS or BS in Computer Science or a related subject.
- Played the role of a core engineer for 3 years in at least one project/product.
- Excellent proficiency in Object-Oriented Programming
- Key Skills: Understands what world-class quality means
- Experience with one of Vue, AngularJS or Backbone or similar
- Thorough understanding of browser local cache
- Thorough knowledge of HTML, CSS, and Object-Oriented JavaScript
- Write clean code. Thorough knowledge of various security issues in-browser applications and the ability to fix them.
- Knowledge of LESS or Saas Proficient in responsive design

You will get to design, architect and develop complex enterprise software and SaaS web applications leveraging modern web stack.
Roles & Responsibilities
Design & build highly scalable, high performance, responsive web applications.
Take full ownership and responsibility for building, shipping, and maintaining core product features, end to end. Help out in building the backend & front-end infrastructure.
Translation of requirements, designs and wireframes into high quality code. Collaborate closely with designers, engineers, founders and product managers.
Mentor team members and review their work.
You will enjoy this role if you...
Are a geek with a desire to stay ahead of the curve.
Like building beautiful well-architected software products with millions of users.
Work collaboratively as part of a close-knit team of geeks, architects and leads.
Desired Skills & Experience:
2 - 6 years of production experience with modern web frameworks - Ruby on Rails, Phoenix/Elixir and/or Django/Python.
Should have sound experience in developing scalable / distributed SaaS apps
Should have good knowledge and work experience in REST API implementations, JSON format handling, caching, sessions, multi-threading, etc.
Should be comfortable with database schema design and leveraging SQL & NoSQL (PostgreSQL, MySQL, Redis, Elasticsearch, DynamoDB)
Experience developing, consuming and transforming internal and 3rd party API's (REST and GraphQL)
Experience with code quality and reusability practices (CI/CD for back-end & front-end repos)
Solid foundation in data structures, algorithms, distributed systems, design patterns.
Strong understanding of software engineering best practices, including unit testing, code reviews, design documentation, debugging, troubleshooting, and agile development
Communication: You like discussing a plan upfront, welcome collaboration, and are an excellent verbal and written communicator.
Bachelor’s degree in Computer Science or equivalent experience.
Bonus points if you have...
Exposure to front-end technologies like React/Redux, Javascript/Typescript etc.
Cloud native development on AWS or GCP
Experience with implementation of container technologies like Docker, Kubernetes. Knowledge of continuous integration, continuous delivery and enterprise DevOps concepts.
BillTrim uses ML + Human to negotiate and monitor all utility bills such as cable, internet, cell phone, electricity, auto insurance, etc
BillTrim negotiates a better rate and protects our customers from overpaying.
BillTrim is San Francisco-based growing startup funded by well-respected and proven investors.
Why work with us?
BillTrim is here to make history. We are passionate to solve problems.
We deeply care about our customers.
To work on something great, something big not average.
We do not compromise with quality. To make SAAS that customers will love and appreciate.
To witness crazy growth and take your career and take it to new heights.
We believe in one outstanding employee gets more done and costs less than two adequate employees.
Less is better, do not clutter unnecessary text, images, buttons, or even a line of code.
We follow Silicon Valley culture.
Personality traits to become a part of BillTrimmer's famiy:
Go to attitude
Tenacious and hungry to make a name
Willing to learn and adapt
Willing to work on weekends if need be
Filled with curiosity and not afraid to ask questions
Think independently and be open-minded to possibilities
Do not apply:
If you are looking for a regular 9 to 5 job
If you are not willing to make BillTrim a priority in your life
If you are not willing to give your best.
If you do not enjoy working in fast pace startup
If you are not comfortable in doing a job you aren't hired for
If you need someone to explain to you every single detail
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We want a MEAN stack developer who is definitely not mean but is enthusiastic, quick at grasping, and has experience in handling multiple projects and codebases.
You should be energetic, authoritative, focused, and experimental at work.
We are looking for experienced backend engineers only.
Apply only if you have 8 YES out of the following 10 qualifying criteria :
-Strong grip over HTML, CSS, and Angular 9+
-Good with CSS styling and theming
-Expert at API development using NodeJS
-Experienced with MongoDB DB
-Self-starter with good communication skills
-At least 2+ years of experience
-Must be willing to work from Bangalore (HSR)
-Have than 2 years of experience with multiple frontend projects in MEAN Stack?
-HAVE worked in a B2C Startup for at least a year?
-CAN join in within 30-45 days?

Work as a member of a team responsible for developing a large-scale, highly available and fault-tolerant SaaS based Leasing & Asset management solution in the commercial real estate space in accordance with established processes. You will apply your knowledge of building scalable, distributed applications and have the opportunity to work with technologies & frameworks such as Ruby on Rails, NodeJS, ReactJS, Heroku, AWS, Postgres DB
Essential Functions include but are not limited to the following.
You will be expected to:
- Contribute to all phases in the software lifecycle – requirements analysis, solution design, development, and deployment
- Maintain high quality standards for the work undertaken and be responsible for the quality of deliverables.
- Ensure assigned projects are developed in accordance with established engineering processes, adhering to scope, schedule constraints and agile project plans
- Guide/mentor the less experienced team members
- Participate in code reviews
- Work effectively as part of a distributed team
- Document the features worked by him/her
Key technical expertise areas expected for this role:
- Strong programming skills in Ruby with clear understanding of Object-Oriented and Functional programming.
- Experience working with Ruby on Rails framework
- Experience on REST API Programming preferably based on a Microservices Architecture
- Good Understanding of Databases (Postgres) and proficiency in database schema designing & writing efficient SQL Queries.
- Strong troubleshooting skills
- Demonstrable ability to learn new programming languages and frameworks quickly
- Experience with distributed systems with specific focus on security and scalability
- Experience with modern cloud technologies such as AWS
Additional areas that would add value:
- Experience working with Cloud Service providers & platforms like AWS, Heroku
- Strong understanding of Design Patterns & their application in system design
- Test Driven & Behavior Driven Development
- Automated Unit/Integration testing
- Using DevOps & Infrastructure tooling such as GoCD/Jenkins, Git
- Frontend web development with JavaScript frameworks like React
- Experience working on projects, preferably in the real estate domain
- Experience working with Virtualization and Containerization technologies including Docker, Kubernetes.
- Experience working in Agile Scrum/Kanban methodologies
- Experience working with Linux and Shell scripting
Education:
- Bachelors or Master’s in Computer Science or related fields

We are looking for a Node.js Developer who is proficient with writing API's, working with data, using AWS and capable of applying algorithms mainly machine learning-based to solve problems and create/modify features for our students. Your primary focus will be the development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is necessary as well.
Responsibilities
- Integration of user-facing elements developed by front-end developers with server-side logic
- Writing reusable, testable, and efficient code
- Design and implementation of low-latency, high-availability, and performant applications
- Implementation of security and data protection
- Use of algorithms to drive data analytics and features.
- Ability to use AWS to solve scale issues.
Apply if you can only arrive for a face to face interview in Bangalore.
SKILLS WE ARE LOOKING FOR
Build reusable APIs for our client-facing apps in Node.js
Create and maintain scalable infrastructure leveraging modern cloud platforms Write tests and documentation as you implement features with your team Maintain expertise in current and emerging technologies and tools
THE PERSON WE ARE LOOKING FOR
4+ years’ Experience with NodeJS
BS degree or higher in Computer Science or Engineering Experience documenting and testing RESTful APIs
Experience working with databases in PostgreSQL, MongoDB or Redis
Experience and enthusiasm for working collaboratively with others in an Agile environment




A great Application Developer has excellent knowledge of Javascript.
They must be familiar with a variety of operating systems and platforms. The ideal candidate will also have an analytical mindset and a keen eye for detail.
The goal is to write “clean” and flawless code to produce fully functional software applications according to requirements.
Responsibilities
Understand requirements and how they translate in application features
Collaborate with a team of IT professionals to set specifications for new applications
Design creative prototypes according to specifications
Write high quality source code to program complete applications within deadlines
Perform unit and integration testing before launch
Conduct functional and non-functional testing
Troubleshoot and debug applications
Evaluate existing applications to reprogram, update and add new features
Requirements
Proven experience as application developer
Experience in designing and building applications
Ability to program in NodeJS and AngularJS
In-depth knowledge of programming for diverse operating systems and platforms using development tools
Excellent understanding of software design and programming principles.
A team player with excellent communication skills
Analytical thinking and problem-solving capability
Great attention to detail and time-management skills

