VoIP Developer

Job Title: Software Developer (Contractor)

Location: Remote, Up to 1-year contract

Compensation: Hourly

About Us: CipherSonic Labs is a cutting-edge technology company specializing in data security and privacy solutions for enterprises processing sensitive data in the cloud. We develop high-performance cryptographic software and hardware acceleration techniques to enable secure computing. Our team is looking for talented individuals to contribute to innovative projects in secure computing and high-performance software development.

Job Description: We are seeking a Software Developer to assist in the development of high-performance software solutions. This role will involve working on low-level programming, optimizing cryptographic algorithms, and improving performance for security-critical applications. The ideal candidate will have a passion for systems programming, algorithm optimization, and working in a high-performance computing environment.

Key Responsibilities:

·     Develop and optimize software using C/C++ for high-performance computing applications.

·     Work on cryptographic algorithm implementations and performance tuning.

·     Optimize memory management, threading, and parallel computing techniques.

·     Debug, profile, and test software for performance and reliability.

·     Write clean, efficient, and well-documented code.

Qualifications:

·     Completed a B.S. or higher degree in Computer Science, Computer Engineering.

·     Strong programming skills in C and C++.

·     Familiarity with Linux-based development environments.

·     Basic understanding of cryptographic algorithms and security principles is a plus.

·     Experience with AWS Lambda, EC2, S3, DynamoDB, API Gateway, Containerization (like Docker, Kubernetes) is a plus.

·     Knowledge of other programming languages such as Python, Rust, or Go is a plus.

·     Strong problem-solving skills and attention to detail.

·     Ability to work independently and collaboratively in a fast-paced startup environment.

What You’ll Gain:

·     Hands-on experience in systems programming, cryptography, and high-performance computing.

·     Opportunities to work on real-world security and privacy-focused projects.

·     Mentorship from experienced software engineers and researchers.

·     Exposure to cutting-edge cryptographic acceleration and secure computing techniques.

·     Potential for future full-time employment based on performance.

Role Summary 

We have an existing Android-based POS application that needs to be migrated and rebuilt as a Windows 

desktop application using WPF. You will re-architect the Android app's features, UI flows, and business logic 

into a full-featured WPF application with SQLite local storage, EF Core, and existing REST API integration. 

Responsibilities 

Analyze the existing Android POS app and re-architect it as a WPF desktop application. 

Rebuild all screens and workflows (billing, cart, product catalog, orders, reports) in WPF / XAML 

following MVVM pattern. 

Implement local data storage using SQLite + Entity Framework Core (Code First, migrations). 

Integrate with the existing backend REST APIs (same APIs used by Android app) for product sync, 

orders, payments, and authentication. 

Ensure feature parity between Android and Windows versions. 

Integrate Windows-specific hardware — barcode scanners, receipt printers, cash drawers. 

Apply Dependency Injection, async/await, and SOLID principles throughout. 

Required Skills 

C# (.NET 6/8), WPF, XAML, MVVM 

Entity Framework Core + SQLite 

REST API consumption (HttpClient, JWT auth, JSON handling) 

Ability to read and understand Android (Java/Kotlin) code and translate logic to C# 

Git, Visual Studio 

Good to Have 

Prior Android-to-Windows or mobile-to-desktop migration experience 

Payment gateway integration (Razorpay / Stripe / Paytm) 

PDF / receipt generation (RDLC / FastReport) 

POS, billing, or retail domain experience 

AI-Assisted Development (Mandatory Mindset) 

We expect the candidate to actively leverage AI tools to accelerate the migration and development process: 

Use GitHub Copilot / Cursor / Claude to convert Android (Java/Kotlin) logic to C# WPF code 

efficiently. 

Use AI tools for boilerplate generation — ViewModels, EF Core models, API service classes, XAML 

layouts. 

Leverage AI for code review, refactoring suggestions, and identifying platform-specific differences 

(Android vs Windows). 

Use AI-assisted documentation and inline commenting to maintain code clarity during migration. 

Comfortable evaluating, validating, and refining AI-generated code — not just accepting output blindly. 

Qualification 

B.E. / B.Tech / MCA in Computer Science | 2–4 years WPF desktop development experience

.

Job description

Responsibilities:

Designing and developing user interfaces using C++.

Adapting interface for modern internet/web applications using the latest C/C++.

Having experinced in Linux.

Making complex technical and design decisions for C/C++ projects.

Development using C/C++ latest versions & Linux.

Participate in development from concept to execution to launch and ensure the application fully serves the needs of the end-user

Work with the team to gain an initial understanding of the desired solution, and iteratively

Develop documentation, provide technical assistance and support as required

Technical Key Skills:

A strong fundamental knowledge of C/C++ development

Extensive knowledge in Linux.

Thorough orientation towards Code reviews, Coding standards, Design Standards, and Code Documentation

Knowledge in design patterns

Should have worked on enterprise-class applications

Excellent team player and strong interpersonal communication skills.

Role- Software Development Engineer-2

As a Software Development Engineer at Amazon, you have industry-leading technical abilities and demonstrate breadth and depth of knowledge. You build software to deliver business impact, making smart technology choices. You work in a team and drive things forward.

Top Skills

You write high quality, maintainable, and robust code, often in Java or C++ or C#

You recognize and adopt best practices in software engineering: design, testing, version control, documentation, build, deployment, and operations.

You have experience building scalable software systems that are high-performance, highly-available, highly transactional, low latency and massively distributed.

Roles & Responsibilities

You solve problems at their root, stepping back to understand the broader context.

You develop pragmatic solutions and build flexible systems that balance engineering complexity and timely delivery, creating business impact.

You understand a broad range of data structures and algorithms and apply them to deliver high-performing applications.

You recognize and use design patterns to solve business problems.

You understand how operating systems work, perform and scale.

You continually align your work with Amazon’s business objectives and seek to deliver business value.

You collaborate to ensure that decisions are based on the merit of the proposal, not the proposer.

You proactively support knowledge-sharing and build good working relationships within the team and with others in Amazon.

You communicate clearly with your team and with other groups and listen effectively.

Skills & Experience

Bachelors or Masters in Computer Science or relevant technical field.

Experience in software development and full product life-cycle.

Excellent programming skills in any object-oriented programming languages - preferably Java, C/C++/C#, Perl, Python, or Ruby.

Strong knowledge of data structures, algorithms, and designing for performance, scalability, and availability.

Proficiency in SQL and data modeling.

• 2 - 7 years of experience in building applications using C++ programming language.
• Comfortable with core programming concepts and techniques (e.g. concurrency, memory management).
• Enjoys working with algorithms and data structures (e.g. trees, hash maps, queues).
• Strong in Data structure and good in problem solving.
• Strong debugging skills.
• Certifying the application – White box testing, black box testing.