11+ FreeSWITCH Jobs in Mumbai | FreeSWITCH Job openings in Mumbai
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NodeJS (Node.js)
PHP
Javascript
React.jsString core PHP Hands-on experience.
Strong Expertise in CodeIgniter Framework.
Good Knowledge of PHP, MySQL, jQuery, Javascript, HTML5, CSS3, JSON
Sound knowledge of database designing and application architecture planning.
Good debugging skills.
A good understanding of asynchronous request handling, partial page updates, and AJAX will be preferred.
Basic UI Designing using Bootstrap and Jquery.
Node Js
Knowledge of Node.js and frameworks available for it, such as Express JS, Strong Loop, etc
Understanding the nature of asynchronous programming and Promises and its quirks and workarounds
Good understanding of server-side templating languages (such as Jade, EJS, etc depending on your technology stack)
Basic understanding of front-end technologies, such as HTML5, CSS3, and Bootstrap
Understanding accessibility and security compliance
User authentication and authorization between multiple systems(Internal or Third-party), servers, and environments
Integration of multiple data sources and databases into one system
Understanding fundamental design principles behind a scalable application
Proficient in code versioning tools, such as Git or TFS
Freeswitch, MYSQL
Good to have knowledge
Redis, Ubuntu, OpenSips, WebRTC
React.jsNodeJS (Node.js)
Express
PostgreSQLRole Overview
We are looking for a Senior Full Stack Developer to build and scale our fintech platform. You will own the entire lifecycle of our financial products, from designing high-performance relational schemas in PostgreSQL to building interactive dashboards in React.
Key Responsibilities
• Full Stack Development: Build and maintain end-to-end features using the PERN stack
(PostgreSQL, Express.js, React, Node.js).
• Database Optimization: Design complex relational models and optimize SQL queries to
handle high-volume financial data and audit trails.
• Security & Compliance: Implement rigorous security measures (e.g., JWT, OAuth, data
encryption) and ensure the platform adheres to fintech standards like PCI-DSS.
• API Architecture: Develop robust RESTful APIs to integrate with third-party banking APIs,
payment processors (Stripe/Plaid), and KYC providers.
Technical Requirements
• Front-end: Advanced proficiency in React.js (Hooks, Context API, Redux or TanStack Query)
and modern CSS (Tailwind/Styled Components).
• Back-end: Expert-level Node.js and Express.js experience, with a focus on asynchronous
programming and secure API design.
• Database: Deep knowledge of PostgreSQL (complex joins, indexing, triggers, and
migrations).
Additional skills
• Understanding of Event-Driven Architecture (using AWS SQS/SNS or Kafka).
• Familiarity with SOC2 or ISO 27001 compliance frameworks.
• Cloud (AWS): Proven experience with:
- RDS/Aurora for managed databases.
- IAM for secure access management.
- AWS Lambda & API Gateway for serverless architecture.
- CloudWatch for monitoring and alerting.
• Tools: Git, Docker, and experience with CI/CD workflows.
About US
RJ Fintech Solutions Pvt. Ltd. is a high-growth fintech startup on a mission to automate business financial operations. In a world where financial systems are often slow and opaque, we are building the "missing link"—a secure, transparent, and lightning-fast platform that puts banking and compliance first for various corporates.
We are not just another financial app; we are an engineering-first company. We believe that elegant code and robust architecture are the foundations of trust. By leveraging the PERN stack and AWS cloud-native infrastructure, we are replacing legacy complexity with modern, scalable solutions.
Why Work With Us?
1. Build the Foundation, Not Just Features
You won't be a small cog in a massive machine. As an early member of our engineering team, you will help define our technical architecture, choose our libraries, and set the coding standards for everyone who follows. Your fingerprints will be on the core DNA of our product.
2. Solve Problems That Matter
Fintech is one of the few industries where code has a direct, measurable impact on people's lives.
Whether we are [e.g., simplifying cross-border payments, democratizing investment, or building the next generation of credit], you will be solving high-stakes challenges around security, trust, and financial inclusion.
India’s fastest-growing premium cosmetics brand product company
NodeJS (Node.js)React.jsJavascriptFull Stack Developer responsible for managing back-end services and the interchange of data between the server and the users.
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 frontend elements built by your co-workers into the application. Therefore, a basic understanding of frontend technologies is necessary as well.
We are looking to recruit a candidate for a role that will require:
- Create and consume restful APIs
- Design, develop, and maintain internal and external applications
- Build efficient, testable, and reusable modules
- Write high quality, structured application/interface code and documentation
- Identify solutions through research and collaboration that resolves the root of problems as they arise
- Define functional and technical requirements for application software to develop skills and knowledge
- Troubleshoot, test and maintain the core product software and databases to ensure strong optimization and functionality
- Contribute in all phases of the development lifecycle
Requirement
∙ Proficient in Node.JS and ReactJS development stack
∙ 2+ years’ experience designing, querying, and updating databases in MySQL/nosql
∙ Basic understanding of web technologies including HTML, CSS, JavaScript, AJAX etc.
∙ Passion for best design and coding practices and a desire to develop new bold ideas
∙ Good to have knowledge of AWS, Redis, ElasticSearch
NodeJS (Node.js)
Amazon Web Services (AWS)Position Overview
We're seeking a skilled Full Stack Developer to build and maintain scalable web applications using modern technologies. You'll work across the entire development stack, from database design to user interface implementation.
Key Responsibilities
- Develop and maintain full-stack web applications using Node.js and TypeScript
- Design and implement RESTful APIs and microservices
- Build responsive, user-friendly front-end interfaces
- Design and optimize SQL databases and write efficient queries
- Collaborate with cross-functional teams on feature development
- Participate in code reviews and maintain high code quality standards
- Debug and troubleshoot application issues across the stack
Required Skills
- Backend: 3+ years experience with Node.js and TypeScript
- Database: Proficient in SQL (PostgreSQL, MySQL, or similar)
- Frontend: Experience with modern JavaScript frameworks (React, Vue, or Angular)
- Version Control: Git and collaborative development workflows
- API Development: RESTful services and API design principles
Preferred Qualifications
- Experience with cloud platforms (AWS, Azure, or GCP)
- Knowledge of containerization (Docker)
- Familiarity with testing frameworks (Jest, Mocha, or similar)
- Understanding of CI/CD pipelines
What We Offer
- Competitive salary and benefits
- Flexible work arrangements
- Professional development opportunities
- Collaborative team environment
React.js
Vue.jsNodeJS (Node.js)
Java
HTML/CSSWe are hiring a Founding Engineer to anchor our engineering team. We’re looking for an enterprising and climate-conscious young engineer to build scalable financial systems and innovate on the future of climate finance. You will help build the first version of our product(s) and work
directly with our founders. The ideal candidate has demonstrated experience in product development at an early stage and an interest in climate tech. Bonus points if you’ve worked on marketplaces or lending products at a FinTech in a previous role.
Location: Hybrid / In-office (Mumbai) depending on preference
Role Type: Full-time
What you’ll be doing
• Lead the development of first product(s) across all phases of software and web
development including ideation, prototyping, design, production, and maintenance.
• Work closely with founders and internal/external stakeholders to build products, tools, and
services from scratch and deliver high-quality software solutions.
• Be actively involved in requirements gathering, customer interviews and the creation of
robust product solutions.
• Brainstorm and lay the foundations of the technology and architectural roadmap as well as
the development processes.
• Share your technical expertise to help the team make thoughtful and scalable design
decisions and identify performance bottlenecks to troubleshoot quickly.
• Manage product development priorities, deadlines, and deliverables.
• Hire and manage a small team of engineers (internal/outsourced).
• Ensure high-performant and responsive web applications and websites.
Skills & Qualities we’re looking for
Hard Skills
• Bachelor’s/Master’s degree in Computer Science (or equivalent experience).
• 4-7 years of experience as a full-stack developer (rare exceptions for highly skilled
developers) at a fast-paced, preferably early / growth stage start-up.
• Proficient with frontend technologies - HTML, CSS, JavaScript & ReactJS/VueJS.
• Proficient with backend technologies - Java/NodeJs/Golang/Python/Ruby.
• Hands-on experience working with any cloud AWS/GCP/Azure/DigitalOcean.
• Knowledge of codebases and version control systems (Git).
• Well-versed with SQL database design & RDBMS concepts.
• Strong arithmetic reasoning, logical and analytical thinking skills.
• Strong knowledge of code quality maintenance and performance analysis.
Soft skills
• Thoughtful problem-solving: We expect you to solve problems. Solving starts with a clear
and accurate understanding of the context. You can decompose tricky problems and work
towards a clean solution, by yourself or with teammates. You're comfortable asking for help
when you get stuck.
• Pragmatic and business-oriented: You care about the business impact of what you're
building, and you prioritise projects accordingly. You're not just going after cool stuff—you
understand the balance between craft, speed, and the bottom line.
• The right attitude toward a sense of urgency, risk, and ambiguity that comes naturally with
working at an early-stage startup.
• Clear communication skills so you can easily convey your thoughts, opinions, and feelings to
customers and teammates.
• Comfortable working in a fluid, growing organisation with minimal supervision.
• Not ideological about technology: To you, technologies and programming languages are
about tradeoffs. You may be opinionated, but you're not ideological and can learn new
technologies as you go.
• Equally effective in individual contributor or team management roles.
Bonus Points if you
• Have a genuine passion for our mission - to solve climate change and its challenges.
• Have worked on the creation of marketplace products/loan management systems (LMS) or
risk assessment solutions.
• Understand object-oriented design principles and design patterns.
• Are familiar with Authentication, Security, XSD, and System Integration concepts.
• Are proficient at product testing - with and without QA support.
• Have experience in agile software development methodologies.
• Have interests outside of technology - could be in any unrelated field (design, sports,
economics, business etc.)
Why Work with us
Aside from being a highly-motivated, mission-driven organisation we offer:
• Highly competitive salaries including attractive stock options.
• Flexibility with location (Remote / In-person) and working hours.
• 25-days paid leave every year + top-ups for key life events.
• Unlimited sick leave.
• Insurance for you and your spouse.
• A yearly learning allowance to go learn a new skill / develop new talent.
• A yearly allowance to use towards the improvement of your physical and mental health.
HTML/CSSJavascript
Angular (2+)
AngularJS (1.x)About Apexon:
Apexon is a digital-first technology services firm specializing in accelerating business transformation and delivering human-centric digital experiences. For over 17 years, Apexon has been meeting customers wherever they are in the digital lifecycle and helping them outperform their competition through speed and innovation. Our reputation is built on a comprehensive suite of engineering services, a dedication to solving our clients’ toughest technology problems, and a commitment to continuous improvement. We focus on three broad areas of digital services: User Experience (UI/UX, Commerce); Engineering (QE/Automation, Cloud, Product/Platform); and Data (Foundation, Analytics, and AI/ML), and have deep expertise in BFSI, healthcare, and life sciences.
Apexon is backed by Goldman Sachs Asset Management and Everstone Capital.
To know more about us please visit: https://www.apexon.com/
About the role:
- Experience: 7+ years of experience building modern web applications working in the fullstack
- Proficiency in TypeScript and JavaScript with a thorough understanding of React.js or Vue.js and their core principles preferred
- Implementing RESTful APIs using .Net/C# preferred with experience with .Net Core, .Net 5 or 6 a bonus!
- Experience with SQL and relational database design with MS SQL Server experience is added advantage
- Experience with NoSQL/document database technologies
- Experience writing automated unit tests in the full stack environment
- Knowledge of modern authentication and authorization mechanisms
- Familiarity with modern front-end and backend build pipelines and tools
- Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
- Experience with modern responsive web application design & development Familiarity with Node.js
- Experience with microservice architecture
- Experience using Git version control
- Experience with VS Code, Visual Studio, or other relevant development tools
- Familiarity with Scrum/Agile principles
- Strong communication skills
- Ability to understand business requirements and translate them into technical requirements.
Required skill set:
- Candidate must be good in JavaScript and have experience in at least one modern JavaScript framework such as Vue/Angular/React. But must be willing to work in Vue/React.
- Must have experience in .NET Framework. Good to have experience in .NET Core/.NET 5/6/7. But must be willing and capable enough to learn .NET Core.
- Should be able to work independently with minimum supervision.
- Must be good in programming concepts such as OOPS, Unit Tests, Web API, SQL, etc
NodeJS (Node.js)JavascriptReact.js
MongoDB- You will play a key strategic and consultative role in developing, delivering and maintaining digital ad tech
products
- Work as part of the engineering and product teams to develop complex platforms and systems that are
scalable to millions of users
- Result-oriented full-stack development for world-class products with high degree of performance and
quality
- Developers in our teams are also adept at formulating product strategies, research best practices, bring in
expertise and mentor younger talent and drive the organization’s goals higher with a self-starter attitude
- Strong sense of commitment, problem-solving, professional ethics and willingness to learn new things are a
standard requirement for all our openings.
Requirement:
- Knowledge of digital ad tech ecosystem
- Minimum 2+ years of experience working in a professional environment on full-stack development
- Proven expertise in creating and developing scalable enterprise or B2C web applications
- Experience in REST API development and MVC/MVVM development methodologies
- Deep understanding of the underlying architecture of web servers, load balancing, and browser nuances.
Basically, a solid understanding of fundamentals - including execution models, asynchronous programming,
object-oriented concepts, relational concepts, etc.
- Proficiency in one or more of Node.js/MEAN stack, Python, Java or other frameworks and willing to be
flexible on stack as per the requirement of the project. Most of our current development is on the MEAN
stack - expertise in the stack will be a definite plus
- Proficiency in one or more of databases such as MySQL, MongoDB, Cassandra or other equivalent databases
and willing to be flexible as per the requirement of the project. Most of our current development is on
MongoDB and MySQL - expertise in these will be a definite plus
- Good understanding of developer tools and devops such as Git, Ansible, cloud platforms such as AWS,
Docker, etc.
- Candidates with Github profiles or blogs with demonstrated knowledge, experience and/or contributions to
open source will have an added advantage
.NETAngularJS (1.x)Angular (2+)Javascript
Skill set: ASP.Net, Web, MySQL, C+, HTML, ASP.Net Angular(good to have),
Job Description as mentioned below: ·
MS SQL; Database design,
Stored Procedure, Functions,
Views, triggers, and advanced queries ·
C# version 4 or higher. ·
Visual Studio 2013 or later. ·
ASP.NET web forms knowledge ·
Advanced JQuery/JavaScript ·
Ability to understand the existing applications and work on enhancements · Ability to understand requirements quickly · Documentation skills , Requirement Analysis ·
Good Communication skills
PHP
CodeIgniter
jQuery- Developing and maintaining dynamic websites and web applications
- Ensure foolproof performance of the deliverable
- Coordinate with co-developers and other related departments.
- Experience own and work on end to end on an application.
- Set Milestones and deadline.
- Fine-tuning and resolve performance issues
- Mentor colleagues and code walk through.
Must have Skills:
PHP, OOP, codeigniter, Jquery, MySQL
Location: Job Location : Senapati Bapat Marg, Elphinstone Road.
NodeJS (Node.js)React.jsJavascript
PHPJavascriptExpertrons is an initiative by experienced professionals turned entrepreneurs (IITB alum) having built a few of India's largest companies across multiple domains. This will be an opportunity to directly work with the founders. What we are looking for: An entrepreneurial, thoughtful and positive mindset/approach to solving large problems, capable of adapting to changing market conditions, willing to join a growing startup, a rational and no-nonsense approach and practical thought process.
Good-to-Have Attributes: Start-up experience, Android experience would be a plus. What we are looking for: An entrepreneurial, thoughtful and positive mindset/approach to solving large problems, capable of building a robust, scalable tech platform adaptable to changing market conditions, willing to join a growing startup, a rational and no non-sense approach and practical thought process.
Responsibilities and Duties
Good-to-Have Attributes: Start-up experience, Android experience would be a plus. What we are looking for: An entrepreneurial, thoughtful and positive mindset/approach to solving large problems, capable of building a robust, scalable tech platform adaptable to changing market conditions, willing to join a growing startup, a rational and no non-sense approach and practical thought process.
Required Experience, Skills and Qualifications
Required Skills: Database - MySQL, NoSQL (MongoDB), Restful Architectures, AWS, SAAS, JavaScript, PHP, Cordova
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