Fullstack Developer

Job Summary:  

We are seeking a skilled and motivated Python Django Developer with experience in building high-performance APIs using Django Ninja.  

The ideal candidate will have a strong background in web development, API design, and backend systems.  

Experience with IX-API and internet exchange operations is a plus.  

You will play a key role in developing scalable, secure, and efficient backend services that support our network infrastructure and service delivery.  

Key Responsibilities:  

Design, develop, and maintain backend services using Python Django and Django Ninja. Build and document RESTful APIs for internal and external integrations.  

Collaborate with frontend, DevOps, and network engineering teams to deliver end-to-end solutions. Ensure API implementations follow industry standards and best practices.  

Optimize performance and scalability of backend systems.  

Troubleshoot and resolve issues related to API functionality and performance.  

Participate in code reviews, testing, and deployment processes.  

Maintain clear and comprehensive documentation for APIs and workflows.  

Required Skills & Qualifications:  

Proven experience with Python Django and Django Ninja for API development.  

Strong understanding of RESTful API design, JSON, and Open API specifications.  

Proficiency in Python and familiarity with asynchronous programming.  

Experience with CI/CD tools (e.g., Jenkins, GitLab CI).  

Knowledge of relational databases (e.g., PostgreSQL, MySQL).  

Familiarity with version control systems (e.g., Git).  

Excellent problem-solving and communication skills.  

Preferred Qualifications:  

Experience with IX-API development and integration.  

Understanding of internet exchange operations and BGP routing.  

Exposure to network automation tools (e.g., Ansible, Terraform).  

Familiarity with containerization and orchestration tools (Docker, Kubernetes).  

Experience with cloud platforms (AWS, Azure, GCP).  

Contributions to open-source projects or community involvement

We’re building a powerful, AI-driven communication platform — a next-generation alternative to RingCentral or 8x8 — powered by OpenAI, LangChain, and SIP/WebRTC. We're looking for a Full-Stack Software Developer who’s passionate about building real-time, AI-enabled voice infrastructure and who’s excited to work in a fast-moving, founder-led environment.

This is an opportunity to build from scratch, take ownership of core systems, and innovate on the edge of VoIP + AI.

What You’ll Do

• Design and build AI-driven voice and messaging features (e.g. smart IVRs, call transcription, virtual agents)
• Develop backend services using Python, Node.js, or Golang
• Integrate OpenAI, Whisper, and LangChain with real-time VoIP systems like Twilio, SIP, or WebRTC
• Create scalable APIs, handle call logic, and build AI pipelines
• Collaborate with the founder and early team on product strategy and infrastructure
• Participate in occasional in-person strategy meetings (Delhi, Bangalore, or nearby)

Must-Have Skills

• Strong programming experience in Python, Node.js, or Go
• Hands-on experience with VoIP/SIP, WebRTC, or tools like Twilio, Asterisk, Plivo
• Experience integrating with LLM APIs, OpenAI, or speech-to-text models
• Solid understanding of backend design, Docker, Redis, PostgreSQL
• Ability to work independently and deliver production-grade code

Nice to Have

• Familiarity with LangChain or agent-based AI systems
• Knowledge of call routing logic, STUN/TURN, or media servers (e.g. FreeSWITCH)
• Interest in building scalable cloud-first SaaS products

Work Setup

• 🏠 Remote work (India-based, must be reachable for meetings)
• 🕐 Full-time role
• 💼 Direct collaboration with founder (technical)
• 🧘‍♂️ Flexible hours, strong ownership culture

About the Company

Our client is a leading manufacturer of TMT Bar and exporter in India. They are a well known group that achieves a turn over of 3000 Cr per annum. The group is setting a construction & architecture oriented omni channel B2B & B2C platform. Merito, a curated talent platform is responsible to identify key resources for this project.

Job Location: Kolkata

Job Description

• Full stack e-commerce developer is responsible for writing reusable, testable, and efficient code
• Design and implementation of low-latency, high-availability, and performance applications 
• Implementation of security and data protection 
• Understanding of performance testing and optimization techniques 
  
  

Requirements

• Fullstack developer should have the ability to translate Wireframes and PSD Designs into functional web apps.
• Binding of UI elements to JavaScript object models
• Creating RESTful services with Node.js
• Fullstack developer must have proven experience in front & back-end development
• Work in a cross-functional team to deliver a complete user experience
• Reactjs Nodejs developer must know MongoDB, Express, Node.js, & React.
• Create Unit and Integration tests to ensure the quality of code
• Be responsive to change requests and feature requests
• Write code that is cross-platform and cross-device compatible
• Full developer must have the ability to wear many hats and learn new technologies quickly
• Understanding & proficiency in REST APIs.
• Fullstack developer should know Git Repository and Jira.

Job Title: Senior Fullstack Engineer - Fintech

Location: Bangalore

Company: TIFIN Give

About Us:

TIFIN Give is an early growth-stage fintech company offering a modern, tech-driven Donor Advised Fund to empower charitable giving. We have a lean, hungry team building a feature-rich product and automated operations platform, through which we are servicing multiple enterprise clients. Our roadmap and deal pipeline is full to the bursting, and we’re looking for someone to join our team in this exciting stage. As we continue to scale, we’re looking for a Senior Fullstack Engineer to lead our engineering teams and drive the successful delivery of our ambitious product roadmap.

OUR VALUES: Go with your GUT

• Grow at the Edge: We strive for personal growth by stepping out of our comfort zones and finding our genius zones with self-awareness and integrity. No excuses.
• Understanding through Listening and Speaking the Truth: We value transparency, communicating with radical candor, authenticity, and precision to create shared understanding. We challenge, but once a decision is made, we commit fully.
• I Win for Teamwin: We work within our genius zones to succeed, taking full ownership of our work. We inspire each other with our energy and attitude, flying in formation to win together.

Role Overview:

Experienced Full Stack Developer with 8 years of hands-on expertise in designing, developing, and deploying web applications.

• Proficient in backend development using Python, with strong skills in frameworks such as Django and FastAPI.
• Skilled in frontend development using ReactJS, ensuring seamless user interfaces and responsive design.
• Skilled at SQL database management, with a focus on performance optimization and data integrity.
• Capable of contributing to system design and architecture discussions, ensuring scalability, reliability, and security.
• Strong communicator with a track record of collaborating effectively within cross-functional teams and delivering high-quality solutions.
• Open to transitioning into Data Engineering roles leveraging strong SQL skills and understanding of data pipelines.
• Good debugging skills.

Key Skills:

• Backend Development: Extensive experience in Python-based backend development with Django and FastAPI frameworks. Proficient in building RESTful APIs, handling authentication, authorization, and data validation.
• Frontend Development: Skilled in frontend technologies, particularly ReactJS, for creating dynamic and responsive user interfaces. Familiar with state management libraries like Redux and context API.
• Database Management: Strong command over SQL for designing schemas, writing complex queries, and optimizing database performance. Experience with ORM frameworks like Django ORM.
• System Design: Understanding of system design principles, including scalability, performance optimization, and microservices architecture. Ability to contribute to architectural decisions and technical design discussions.
• Data Engineering: Open to roles in Data Engineering, with skills in SQL, data pipelines, ETL processes, and data warehousing concepts.
• Communication: Effective communicator with experience in team collaboration, client interactions, and articulating technical concepts to non-technical stakeholders. Proven ability to work in Agile development environments.

Note: Completely IC Role and Hands-on coding is mandatory.

Additional Skills (Good to Have):

• Experience with Next.js for server-side rendering and building React applications.
• Familiarity with Snowflake / Redshift for cloud-based data warehousing and analytics.
• Knowledge of data manipulation and analysis tools such as Pandas and NumPy.
• Exposure to Salesforce platform APIs and extensions or similar CRM functionalities.

Technical Proficiency:

• Backend: Python, Django, FastAPI, Flask, RESTful APIs, GraphQL
• Frontend: JavaScript, ReactJS, Redux, HTML5, CSS3, Responsive Design
• Databases: PostgreSQL, MySQL, SQLite, MongoDB, ORM (Django ORM)
• Data Engineering: SQL, ETL Processes, Data Warehousing Concepts
• Tools & DevOps: Git, Docker, AWS (EC2, S3, RDS), CI/CD pipelines, Agile methodologies

Professional Experience:

• Developed and maintained scalable web applications using Django and FastAPI, ensuring high performance and reliability.
• Designed and implemented frontend components and user interfaces using ReactJS, enhancing user experience and interactivity.
• Optimized SQL queries and database schema design to improve application performance and data integrity.
• Collaborated with cross-functional teams in Agile environments to deliver features and meet project milestones.
• Open to transitioning into Data Engineering roles, leveraging SQL skills and understanding of data pipelines to contribute to data-driven solutions.

Compensation and Benefits Package:

• Competitive compensation with a discretionary annual bonus.
• Performance-linked variable compensation.
• Medical insurance.

Note on Location:

While we have team centers in Boulder, New York City, San Francisco, Charlotte, this role is based out of Bangalore

TIFIN is an equal-opportunity workplace, and we value diversity in our workforce. All qualified applicants will receive consideration for employment without regard to any discrimination.

· Salary Package: As per Company Standards

Job Description:

Technologies/Frameworks –

·        Core Java, J2EE,

·        Spring Core and Spring MVC, Sprint Boot, Spring Security,

·        JDBC, Hibernate, RESTful APIs, SOAP WebServices

·        Knowledge of JavaScript, JQuery, AJAX, HTML5, and CSS3, Angular is added advantage

·        Junit or Mockito frameworks

·        Maven, Git

·        Knowledge Data Structures,

·        SQL, MySQL

·        Designing relational database schemas                                                                                                                                                

·        Basics of AWS, Cloud, Microservices

Must have strong knowledge and experience in Agile based software development methodologies. Knowledge of an Agile tool like Jira.

Strong knowledge of working in Integrations of 3rd party APIs and creating the new APIs.

Must have good knowledge of creating Flow diagrams, UMLs and all the required documentations.

Must have Team Lead exposure

Domain Preference

What you need to have:

• Cross-platform mobile applications for Android & iOS
• Web service integration (SOAP, REST/JSON, GraphQL)
• Identification of application issues when deploying the apps
• Timely App deployment to Play Store & ios app store

Skills & Requirement:

• Minimum 2 years Experience required.
• Previous mobile app development experience using Flutter framework and DART programming is essential
• Experience with Material Design and Android UI design principles, patterns and best practices
• Experience with third party libraries and API integration experience is essential.
• Strong knowledge of Design patterns and good UI design ability
• Dynamic form building experience is essential
• Diagnose performance issues, fix bugs (including crashes) to increase the functionality of the application
• Performance optimization is required.
• Previous experience on IOT Projects will be added advantage

Work Location: 1st Sector, HSR Layout, Bengaluru - 560102

Office Timings : Monday to Saturday – 9:00AM to 6:00PM

Work From Office Only

Tech9 India is looking for Software Developers to join our team.  We have mid level to principal roles available.  Depending on the role, the position requires the use of Front and back End Technologies. This is a great opportunity to work with a company that has a primary focus of making our customers happy by delivering value, without all the burdensome policies and rules that have become typical for outsourced software development companies.

If you are looking for a change this is what we can promise you:

• You will have challenging problems to solve
• You will have flexibility and autonomy to solve problems and deliver solutions
• We will provide a highly collaborative environment with skilled and super friendly teammates
• We will fully support you in developing software the right way
• We won't burden you with useless policies and procedures
• We will provide you the tools you need to do your job right

If this sounds attractive please apply! We'd love to talk to you!

Responsibilities:
 

• Work with cross-functional teams, using agile practices, write, debug and deliver code
• Produce solid, thoroughly tested features

           ​​​​​​​Requirements:

• 3+ years of experience in Javascript engineering, frameworks, unit testing frameworks 
• At least 3 years of experience developing in Node, React, and nice  to have experience on Go Language
• Strong verbal and written communication skills
• Experience working with product managers and scrum teams to effectively translate business requirements into workflows  
• Demonstrated ability to remove problems and overcome roadblocks
• Cloud platform experience 

        Good to have for Mid/Sr. and must have for Principal role 

• Hands-on experience with APIs, microservices
• Experience with CI/CD systems such as Jenkins
• Experience with JSON and developing REST Services
• Expert experience leveraging container based technologies
• Multiple years of experience delivery solutions through an Agile delivery methodology
• Experience with bash shell scripts, LINUX utilities & UNIX Commands
• Ability to understand complex systems and solve challenging analytical problems
• Ability to leverage multiple tools and programming languages to analyze and manipulate data sets from disparate data sources
• Strong collaboration and communication skills within and across teams
• Strong problem solving skills and critical thinking ability