
About us:
HappyFox is a software-as-a-service (SaaS) support platform. We offer an enterprise-grade help desk ticketing system and intuitively designed live chat software.
We serve over 12,000 companies in 70+ countries. HappyFox is used by companies that span across education, media, e-commerce, retail, information technology, manufacturing, non-profit, government and many other verticals that have an internal or external support function.
To know more, Visit! - https://www.happyfox.com/
We’re looking for an experienced Backend Engineer to join our growing team of engineers to help build and maintain our products. You should have prior experience being responsible for building sufficiently complex features by yourself.
Responsibilities:
- Implement product features by writing clean, robust, reusable code with tests
- Bring new ideas and best practices to improve the team and the codebase
Requirements:
- At least 3 years of relevant professional experience
- Sound knowledge of programming languages like Python
- Experience working with web application frameworks like Django
- Experience in building web services using relational databases like PostgreSQL or NoSQL databases like MongoDB
- Experience developing REST APIs and a good understanding of best practices around building APIs
- Good communication skills
- Passion to solve complex technical problems and troubleshoot the issue

About HappyFox
About
HappyFox is a software-as-a-service (SaaS) support platform. We offer an enterprise-grade help desk ticketing system and intuitively designed live chat software.
We serve over 12,000 companies in 70+ countries. HappyFox is used by companies that span across education, media, e-commerce, retail, information technology, manufacturing, non-profit, government and many other verticals that have an internal or external support function.
To know more, Visit! https://www.happyfox.com/
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Job Description: Python Developer
Experience: 2+ Years
Job Location: Nr. Iskcon Mega Mall, SG Highway, Ahmedabad
Timings: 10 AM to 7 PM
Job Description:
Technical Skills :
- Good knowledge of Python with 2+ years of minimum experience
- Strong understanding of various Python Libraries, APIs, and toolkits.
- Good experience in Django, Django REST Framework, and Flask framework.
- Understanding of AWS Serverless implementation using Lambda and API Gateway
- Hands-on Experience in Databases like Mysql, PostgreSQL.
- Good experience/understanding in Agentic AI / RAG.
- Proficient in NoSQL document databases especially MongoDB, Redis.
- Stronghold in Data Structures and Algorithm
- Thorough understanding of version control system concepts especially GIT.
- Understanding of the whole web stack and how all the pieces fit together (front-end, database, network layer, etc.) and how they impact the performance of your application.
- Excellent understanding of MVC and OOP. Bonus for the understanding of prevalent design patterns.
- Excellent debugging and optimization skills
Job Responsibilities :
- Building big, robust, scalable, and maintainable applications.
- Debugging, Fixing bugs, Identifying Performance Issues, and Improving App Performance.
- Continuously discover, evaluate, and implement new technologies to maximize development efficiency.
- Handling complex technical issues related to web app development & discussing solutions with the team.
- Developing, Deploying, and maintaining Multistage, Multi-tier applications.
- To write high-performing code and will be participating in key architectural decisions.
- Project Execution & Client Interaction
- Scrum Implementation
Role & Responsibilities
work with peers in Product, QA, and other Engineering departments;
coach and mentor team members;
cautiously drive adoption of new technologies and processes;
preserve our engineering values of quality, scalability, and maintainability;
“see around corners” — identify blind spots and prioritize work across teams;
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own the overall architecture and systems engineering for your products.
BACKEND DEVELOPER JOB DESCRIPTION
Job Title: Backend Developer - Node.js & MongoDB
Location: Hyderabad
Employment Type: Full-Time
Experience Required: 3–5 Years
About Us
Inncircles – THE INNGINEERING COMPANY
We are a forward-thinking construction-tech innovator building CRM solutions that manage crores of records with precision and speed. Our mission is to revolutionize the construction domain through scalable engineering and robust backend systems. Join us to solve complex challenges and shape the future of data-driven construction tech!
Job Description
We are hiring a Backend Developer with 3–5 years of hands-on experience in Node.js and MongoDB to design, optimize, and maintain high-performance backend systems. You will work on large-scale data processing, external integrations, and scalable architectures while ensuring best coding practices and efficient database design.
Key Responsibilities
Backend Development & Optimization
- Develop and maintain RESTful/GraphQL APIs using Node.js, adhering to best coding practices and reusable code structures.
- Write optimized MongoDB queries for collections with crores of records, ensuring efficient data retrieval and storage.
- Design MongoDB collections, implement indexing strategies, and optimize replica sets for performance and reliability.
- Scalability & Performance
- Implement horizontal and vertical scaling strategies to handle growing data and traffic.
- Optimize database performance through indexing, aggregation pipelines, and query tuning.
- External Integrations & Debugging
- Integrate third-party APIs (payment gateways, analytics tools, etc.) and SDKs seamlessly into backend systems.
- Debug and resolve complex issues in production environments with a systematic, data-driven approach.
AWS & Cloud Services
Work with AWS services like Lambda (serverless), SQS (message queuing), S3 (storage), and EC2 (compute) to build resilient and scalable solutions.
Collaboration & Best Practices
Collaborate with frontend teams to ensure smooth API integrations and data flow.
Document code, write unit/integration tests, and enforce coding standards.
Mandatory Requirements
3–5 years of professional experience in Node.js and MongoDB.
Expertise in:
- MongoDB: Collection design, indexing, aggregation pipelines, replica sets, and sharding.
- Node.js: Asynchronous programming, middleware, and API development (Express.js/Fastify).
- Query Optimization: Writing efficient queries for large datasets (crores of records).
- Strong debugging skills and experience in resolving production issues.
- Hands-on experience with external integrations (APIs, SDKs, webhooks).
- Knowledge of horizontal/vertical scaling techniques and performance tuning.
- Familiarity with AWS services (Lambda, SQS, S3, EC2).
Preferred Skills
- Experience with microservices architecture.
- Knowledge of CI/CD pipelines (GitLab CI, Jenkins).
- Understanding of Docker, Kubernetes, or serverless frameworks.
- Exposure to monitoring tools like Prometheus, Grafana, or New Relic.
Why Join Inncircles?
Solve large-scale data challenges in the construction domain.
Work on cutting-edge cloud-native backend systems.
Competitive salary, flexible work culture, and growth opportunities.
Apply Now:
If you’re passionate about building scalable backend systems and thrive in a data-heavy environment, share your resume and a GitHub/portfolio link showcasing projects with Node.js, MongoDB, and AWS integrations.
Inncircles – THE INNGINEERING COMPANY
📍 Hyderabad | 🚀 Building Tomorrow’s Tech Today
What kind of work will you get?
We are looking for a Python developer.
Examples of technical tasks:
Working on our backend SDK to implement APIs that will be consumed by the frontend widgets
Designing APIs for different auth recipes
Architecting auth flows
You will also be given non technical tasks like product brain storming, competitor analysis and writing documentation.
Note: Compensation is as per the applicant's geography
Requirements
Well versed in Python with 2+ years of professional experience
Familiar with and comfortable working with Web frameworks like FastAPI, Django and Flask
Familiar with HTTP networking in Python
Strong understanding of async and sync modes in Python
Bonus:
Contributed to open source, or have your own open source repo with a community and many github stars
Built an in-house authentication or authorization solution or worked with solutions such as Keycloak, Auth0, Ory, Okta etc
The tech stack looks like the below (expect this to change as we scale):
- Typescript for APIs (REST and GraphQL)
- Kafka, Spark, and data warehouses for ML pipelines (spark on python/scala)
- Solidity + hardhat for smart contracts (in the future, rust, go and move)
- AWS & Terraform
- Full nodes
You can expect to do some or all of the following:
- Read through protocols’ whitepapers and smart contracts to derive metrics and analyze risks
- Architect the backend for APIs, async jobs, and blockchain integration
- Build clean, concise APIs for customer integration, along with the documentation
- Setup, run and maintain full and archive nodes across different chains
- Integrate with multiple partners like exchanges and custody providers
- Fool-proof security across the stack - encryption, hashing, privacy, VPC, etc.
- Infrastructure as code - build terraform scripts and ensure easy replication of the infra across different regions
- Research the top DeFi protocols to uncover better insights for our customers and evaluate their risk profiles, security, and historical returns
- Manage production deployments, logging, and monitoring
We expect you to be fairly comfortable with working with both web3 and web2 stacks. We do not expect that you have web3 experience on day 1, but you should be willing to wear multiple hats, learn things quickly and move fast.
About you
- Generalist, a solid engineer who can learn things on your own and have an eye for clean, tested, and well-documented code
- We don’t look at the number of years of work experience as a criterion, but rather see what you have done in your life so far (side projects, open-source contributions, blogs, etc.). We don’t care about degrees, the institutions you went to, or the companies you worked for before. We are open to talking as long as you have good judgment, great clarity, align with our values and have a strong track record of thoughtful work
- Understand the fundamentals of building and integrating APIs and secure systems. Bonus if you know a bit about blockchains and protocols
- You can be strong on the backend, front-end, or can dabble everywhere. We want you to play to your strengths and will provide enough opportunities to learn and do things outside of your comfort zone
Pay and benefits We offer a solid, competitive package (including early-stage equity) that is location agnostic. We give you the flexibility to choose the split between cash and equity.
- Candidate should have strong work experience in JavaScript(ES6+)
- Hands on application development using Node JS, Express JS, MongoDB and Mongoose
- Good understanding of Web Technology, RESTful APIs, JSON structures
- Proficient understanding of code versioning tools, such as Git
- Exposure in AWS Services will be an added advantage
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- Design, code, test and document software according to the functional requirements.
- Analyze, diagnose and resolve errors related to applications.
- Provide application and user support.
About Prêtture
We are India’s coolest SaaS ERP for Fashion, Lifestyle and Home Decor brands. Currently working across 100 brands like House of Masaba, Rahul Mishra, Raw Mango, Anamika Khanna and many others across India, helping them organise their end to end business workflow through our application.
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The ideal candidate is a creative problem solver who understands the requirement and comes up with the solution keeping in mind the impact of the solution on existing code
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- Understand the problem statement and get the code done for the server side programming of our software including the database and other internal/external micro services communication
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- Impact analysis before actually writing any code
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- Bachelor's degree or equivalent experience in Computer Science
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Navi Mumbai
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Three Wheels United works in the exciting fintech domain by developing novel solutions to improve financial inclusion and reduce pollution. Our solutions are backed by cutting edge technology which helps streamline complex financial instruments and improve operational efficiency between various partners. Three Wheels United has won several awards for its efforts in driving sustainable use of resources and promoting clean technology and not surprisingly is backed by multiple international and national venture funds.
Being a start-up, Three Wheels United offers a challenging fast-paced environment to learn and grow by providing you opportunities to step out of comfort zone and tinker with your creative and innovative side and host various responsibilities.
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In collaboration with Microsoft Research, we are developing a data-driven lending platform catered towards the needs of “emerging markets” users. The complete platform has various components, all working in tandem to provide a “comfortable” loan journey for our borrowers by working on increasing their ability to earn more as well as improving their willingness to repay. As someone joining the technology team, you’ll have the chance to experience and lead efforts into scaling the existing systems to thousands of users across India and outside. You’ll also get a chance to learn the various nuances of working in the domain of finance and sustainable technology development.
We are looking for outstanding engineers to assist building up the core components as well as designing new components. Knowledge of existing technologies is preferred, but ultimately, we are looking for individuals with a growth mindset, willing to learn and contribute to their growth and the growth of their peers.
Funding and Partnerships:
Our lending model has been identified as one of the most innovative in global south by the Climate Finance Lab and we have raised seed funds from global Angel investors to scale our operations. We work closely with Microsoft Research India and Mahindra Electric as our technology partners. The technology team is being incubated at Microsoft Research’s Center of AI and Societal Impact and will work closely with Researchers to iron out the platform. https://hashedin.com/blog/acm-sigchis-1st-bangalore-chapter-user-research-in-action/">HashedIn and Diode cover in brief our partnership with Microsoft Research’s TEM group and the work around financial inclusion and sustainable technology development.
Responsibilities:
- Develop, modify, and maintain code base of various applications.
- Coordinating with a remote team and applying appropriate branching, labelling using GIT.
- Adding features to the existing web dashboard for monitoring and supporting field operations.
- Implementing application testability and diagnostics and fixing bug with REDUX architecture.
Good to Have:
- 2+ years’ experience with development of Restful APIs.
- Knowledge of MVC architecture.
- Strong Knowledge of Database management and OOP.
- Any prior experience of using CD/CI pipelines and experience with azure web services.
Great to Have:
- Contributions to Opensource projects.
- Contributions to developer community through Stack Overflow, TopCoder, CodeChef, Google Developer Groups etc.
- Relevant personal or public technical blogs
-Strong logic and analytical skills.
-Experience with Node.js, Javascript, HTML5, CSS3.
-Database Experience - Postgres or other relational databases.
-Proficient understanding of code versioning tools, such as Git.
- Experience with performance debugging and benchmarking
- Integration of user-facing elements developed by front-end developers with server-side logic
- Must understand the project requirement and technical documents.
- Ability to complete the task within a specified time with full accuracy.
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