Fullstack developer

Job Title : Full Stack Developer (Python + React.js)

Location : Gurgaon (Work From Office, 6 days a week)

Experience : 3+ Years

Job Overview :

We are looking for a skilled Full Stack Developer proficient in Python (Django) and React.js to develop scalable web applications. The ideal candidate must have experience in backend and frontend development, database management, and cloud technologies.

Mandatory Skills :

✅ Python, Django (Backend Development)

✅ PostgreSQL (Database Management)

✅ AWS (Cloud Services)

✅ RabbitMQ, Redis, Kafka, Celery (Messaging & Asynchronous Processing)

✅ React.js (Frontend Development)

Key Requirements :

• 3+ Years of experience in Full Stack Development.
• Strong expertise in RESTful APIs & Microservices.
• Experience with CI/CD, Git, and Agile methodologies.
• Strong problem-solving and communication skills.

Fountane Archipelago  ·  Island Role

A Little Bit About the Role

We are looking for a Senior Product Engineer (L3) who thrives in complexity. Most engineers build on blank canvases — you build on someone else’s mess and leave it better than you found it.

The majority of your work at L3 will be on existing, live codebases — disorganised, partially documented, built by multiple teams over multiple years. Your job is to enter those systems, understand them before touching them, extend and clean them without breaking what works, and progressively bring them up to a standard where AI tooling can accelerate further development. This is the core of what L3 does at Fountane. If you have only built greenfield projects, this role will be hard.

You are expected to be genuinely full stack: comfortable owning web applications and mobile apps, the frontend, backend, database, state management, and API integration layer — without needing to hand off to a specialist.

You will work closely with the Concept Engineer on your Island — translating their prototypes into production architecture, raising technical blockers early, and keeping the sprint honest. You will also review code, mentor junior engineers, respond to production incidents, and contribute to the network’s shared knowledge base.

All of this is done primarily with Cursor and Claude as your execution and reasoning tools. AI-assisted engineering is not a feature of this role — it is the method.

AI-First Engineering Expectation

Cursor and Claude are your primary tools — not supplements. Engineers at L3 who are not using AI at the codebase level are not operating at this level.

At L3, AI-assisted engineering means:

• Loading full codebase context into Cursor before writing a single line — understanding the system before touching it.
• Writing scoped, precise refactor prompts that isolate changes to one concern at a time.
• Using Cursor to generate tests that document existing behaviour before any restructuring begins.
• Using Claude for architecture reasoning, decision documentation, and translating CE briefs into structured technical plans.
• Producing inline documentation and decision records as part of the AI-assisted workflow — not as an afterthought.
• Sharing effective prompt patterns and Cursor discoveries with the broader Fountane network — kept to yourself, they are a missed contribution.

Key Responsibilities

Legacy Codebase Refactoring & the Cleaning Phase

This is the primary L3 engagement type at Fountane. You will be handed existing, partially documented codebases — built by previous teams, often without tests, with inconsistent patterns — and your job is to refactor them into a clean, AI-promptable state without losing existing functionality. You use Cursor’s codebase context window to navigate safely, write characterisation tests before touching anything, and make changes in small, reviewable increments. The standard is: every module you leave should be easier to extend by AI tooling than when you found it.

Full Stack Development — Web & Mobile

Build and own the full application layer: React / Next.js web frontends, React Native or Flutter mobile apps, Node.js / Python backends, and relational and non-relational databases. You should be able to pick up web or mobile on any engagement without needing a handoff. Schema design, data modelling, and state architecture are yours to own — including diagnosing and fixing broken or leaking state in existing frontends.

Third-Party API Integrations

Integrate complex third-party services — payments (Stripe), communications (Twilio), auth (Auth0), and others — reliably and without creating brittle dependencies. Own the integration layer end to end: error handling, retries, failure modes, and documentation. If a third-party integration is flaky in production, that is your problem to own.

CE Collaboration & Sprint Integrity

Work directly with the Concept Engineer to translate prototypes into buildable technical plans. Review CE briefs before the sprint starts — if the scope is technically unrealistic, the time to say so is before work begins, not on demo day. Raise blockers against acceptance criteria proactively. You are the technical check on what the CE promises the client.

Security Awareness

Write code that does not require the Lead to security-audit every line. This means: input validation by default, no hardcoded secrets, correct auth scoping, safe handling of user data, and awareness of common vulnerabilities (injection, broken auth, insecure direct object references) in the context of the stacks you work in. You are not the security architect — the Lead owns that — but you are expected to produce code that does not introduce obvious vulnerabilities.

Production Incident Response

When something breaks in production, you are on it. Diagnose the issue, apply a safe fix or rollback, document what happened and why, and hand a clear summary to the Lead for the client post-mortem. Speed matters, but a bad fix that causes a second incident is worse than a slow fix that is correct. Response expectation: acknowledged within 1 hour, resolved or escalated with a clear status within 4 hours.

Codebase Navigation & Safe Refactoring

On all engagements — not just Cleaning Phase work — keep changes small, focused, and reviewable. One type of change per commit. Write tests that document existing behaviour before restructuring. Leave every module easier to understand than when you found it.

Code Review

Review pull requests from L1 and L2 engineers with specific, actionable feedback — not rubber-stamp approvals. A good code review at L3 leaves the author understanding what to do differently next time, not just what to fix now. Review weekly; do not let PRs age.

Mentoring

Review junior engineers’ code weekly with specific, useful feedback — this is distinct from quality-gate code review. The goal here is teaching, not gatekeeping. Run monthly pairing sessions to help them grow. The measure of good mentoring is whether they are becoming more capable and less dependent on you over time.

Documentation

Write short decision records when you make significant technical choices. Leave every module you touch easier to understand than when you found it. Treat documentation as part of the engineering work, not a separate task you do at the end.

Qualifications

• 5+ years of experience as a software engineer, with a strong track record on real production codebases you did not build from scratch — incomplete documentation, inconsistent patterns, other people’s decisions. If your experience is primarily greenfield, this role will be a difficult fit.
• Genuinely full stack across web and mobile: proficient in React / Next.js and at least one of React Native or Flutter, Node.js or Python on the backend, and comfortable with both relational and non-relational databases including schema design.
• Hands-on, daily Cursor and Claude usage at the codebase level. You should be able to describe concretely how you use AI in your engineering workflow — not in general terms.
• Experience integrating complex third-party APIs in production environments — not just following a quickstart guide. You should be able to describe an integration that failed in production and what you did about it.
• Solid security awareness for the stacks you work in: input validation, auth scoping, safe data handling. You do not need a security specialism, but you should not be writing code that introduces obvious vulnerabilities.
• Has conducted meaningful code reviews that improved the code and the author, not just approved the PR.
• Has coached or mentored junior engineers before, and done it well.
• Comfortable with production incident response — diagnosing issues under pressure, applying safe fixes, and communicating clearly to a Lead or client about what happened.
• Treats documentation as part of the job, not an afterthought.
• Bachelor’s or Master’s in Computer Science or a related field, or equivalent experience.

About Fountane

Fountane is a technology ventures lab - one part product studio, one part startup engine. We build high-quality software and AI products for clients ranging from fast-moving startups to large enterprises, and we co-build and invest in new companies when we see the right opportunity.

Founded in 2017 and headquartered in Minneapolis, we have grown to 60+ people across four continents and were recognised as one of America’s fastest-growing companies, ranking No. 699 on the Inc. 5000 with 595% three-year growth.

We are radically open-minded, serious about craft, and direct about expectations. If you want to do meaningful work without politics, this is the place.

Designing, building, and automating ETL processes using AWS services like Apache Sqoop, AWS S3, AWS CLI, Amazon 

EMR, Amazon MSK, Amazon Sagemaker. 

∙Developing and maintaining data pipelines to move and transform data from diverse sources into data warehouses or 

data lakes. 

∙Ensuring data quality and integrity through validation, cleansing, and monitoring ETL processes. 

∙Optimizing ETL workflows for performance, scalability, and cost efficiency within the AWS environment. 

∙Troubleshooting and resolving issues related to data processing and ETL workflows. 

∙Implementing and maintaining security measures and compliance standards for data pipelines and infrastructure. 

∙Documenting ETL processes, data mappings, and system architecture. 

We are seeking talented and motivated Full Stack Web Developer to join our team. The ideal candidate should have hands-on experience in front-end, back-end, databases, and cloud deployment. You will be responsible for designing, developing, and maintaining scalable web applications, working closely with cross-functional teams in a fast-paced environment.

Responsibilities

• Design and develop responsive front-end applications using modern frameworks (React.js / Angular / Vue.js).
• Build and maintain RESTful APIs / GraphQL services using Node.js, Express, Django, or similar.
• Develop robust back-end systems with focus on performance, scalability, and security.
• Work with databases (MySQL, PostgreSQL, MongoDB, etc.).
• Deploy and manage applications on cloud platforms (AWS / Azure / GCP).
• Collaborate with designers, product managers, and DevOps engineers in an Agile environment.
• Write clean, reusable, and testable code following best practices.
• Debug, troubleshoot, and optimize application performance.

Required Skills

• Front-end: React.js / Angular / Vue.js, HTML5, CSS3, JavaScript (ES6+).
• Back-end: Node.js / Express.js / Django / Spring Boot.
• Databases: MySQL, PostgreSQL, MongoDB.
• Version Control: Git, GitHub, GitLab.
• Cloud Deployment: AWS / Azure / GCP.
• CI/CD basics and DevOps awareness.

Preferred Skills (Good to Have)

• TypeScript for scalable front-end development.
• Experience with Docker / Kubernetes.
• Familiarity with microservices architecture.
• Test automation (Jest, Mocha, Cypress).
• Exposure to Agile/Scrum methodologies.

Eligibility

• B.E / B.Tech / M.E / M.Tech / MCA / M.Sc (IT/CS).
• 2–5 years of experience as a Full Stack Developer.
• Strong problem-solving and analytical skills.

.

Role Senior Dot Net Developer

Location India, Remote (Work from Anywhere in India)

Minimum Qualification B. Tech. (or equivalent) from an accredited institution

Indicative Experience 5+ years

Domain : Preferably Life-Sciences/Pharma

Customer Profile : Captive research and development pods for a $ 500 million group of pharma data research companies that help patients gain access to life-saving therapies. We help our clients navigate the complexities at each step of the drug development life cycle, from pipeline to patient.

Other benefits Health Insurance, Provident Fund, Life Insurance, Reimbursement of Certification Expenses, Gratuity, 24x7 Health Desk.

Overview:

The Senior .NET Developer plays a crucial role in the organization, responsible for developing, testing, and maintaining high-quality software solutions using .NET technologies. They are essential in ensuring the stability and scalability of our systems, contributing to the overall success of our software products.

Key Responsibilities:

• Designing, coding, and testing software applications using C# and the .NET framework.
• Collaborating with cross-functional teams to analyze user requirements and deliver robust solutions.
• Implementing and maintaining ASP.NET MVC applications, ensuring high performance and responsiveness.
• Developing database structures and queries using SQL Server for data storage and retrieval.
• Integrating front-end elements with server-side logic using JavaScript and other web technologies.
• Utilizing Entity Framework to map and access data from the database.
• Creating and consuming web services using Web API to support system integrations.
• Participating in code reviews, identifying areas for improvement and implementing best practices.
• Resolving technical issues and debugging software to optimize functionality.
• Collaborating with the QA team to perform thorough testing and ensure product quality.
• Keeping abreast of industry trends and technologies to enhance technical capabilities.
• Providing technical guidance and mentorship to junior team members.
• Contributing to the continuous improvement of development processes and methodologies.
• Adhering to project timelines and delivering high-quality code within established deadlines.

Required Qualifications:

• Bachelor's degree in Computer Science, Software Engineering, or a related field.
• Proven experience as a .NET Developer, with a strong portfolio of successful projects.
• Proficiency in C#, .NET Framework, ASP.NET, and MVC for developing web applications.
• Solid understanding of SQL Server and database design principles for efficient data management.
• Experience in client-side scripting using JavaScript, HTML, and CSS.
• Familiarity with Entity Framework for ORM, and Web API for building RESTful services.
• Strong knowledge of software development best practices and design patterns.
• Ability to work collaboratively in a team environment and communicate effectively.
• Excellent problem-solving skills and attention to detail in writing clean, maintainable code.
• Proactive attitude towards learning and applying new technologies to enhance development processes.
• Working knowledge of version control systems, such as Git, for code management.
• Certifications in relevant technologies, such as Microsoft Certified: Azure Developer Associate, are a plus.
• Experience with agile methodologies, such as Scrum or Kanban, for iterative and adaptive development.
• Strong analytical and troubleshooting abilities to identify and resolve complex technical issues.
• Understanding of software security principles and implementation of best practices to safeguard applications.

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.
• Expertise in backend programming with Node.js and MongoDB.
• Experience with React.js and redux.
• Material UI and 3rd party libraries.
• Experience with clean code writing practices like avoiding callback hell like promises, async.
• Thorough understanding of Node.js and its core principles.
• Experience with popular React.js workflows (such as Flux or Redux).
• Familiarity with newer specifications of ECMAScript.
• Experience with data structure libraries (e.g., Immutable.js).
• Familiarity with RESTful APIs.
• Knowledge of modern authorization mechanisms, such as JSON Web Token.
• Familiarity with modern front-end builds pipelines and tools.
• A knack for benchmarking and optimization.
• Familiarity with code versioning tools (such as Git, SVN, and Mercurial).

Responsibilities:

• Build Node.js APIs using microservices.
• Rewriting backend code with microservices architecture & Unit tests.
• Developing new user-facing features using React.js.
• Building reusable components and front-end libraries for future use.
• Translating designs and wireframes into high-quality code.
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers.

Job Description: Full Stack Developer – RattanIndia Technologies Private Limited

Based at: New Delhi

Overview:

Required Full Stack developer with 3 to 6 years of experience with competencies in development of web applications in financial services domain on salesforce development platform and shall be responsible for requirement analysis, design, coding, testing and implementation of web applications.

Key Accountabilities:

• Working closely with business teams on the analysis to understand the requirements.
• Shall be responsible for designing, coding, testing and implementation of web application.
• Will be responsible for system design and application development of web applications.
• Work closely with the product managers and other team members to build features, functionality, and application.
• Design and implementation of low-latency, high-availability, and high performance applications.
• Implementation of security and data protection.
• Demonstrate creativity and sound analytical skills in identifying effective approaches to develop solutions independently.
• Deliver features with high quality, on-time as per project plans and delivery commitments.
• Delivering status updates to the management and stakeholders regularly.
• Demonstrate creativity and sound analytical skills in identifying effective approaches to develop solutions independently.

Academic Qualification:

• Tech Computer Science/MCA from Top Tier Institutes.

Skillset Requirements:

• Expertise with Node.JS and associated technologies such as React and Express.
• Fluent in HTML5, CSS3, and JavaScript
• Experience with SQL (Postgres) data models
• Extensive experience developing and working with REST APIs.
• Experience working in a DevOps environment and using tools like Travis, Jenkins.
• Solid experience with containerization using Docker and Kubernetes.
• Proficiency with source control and team collaboration tools (GitHub, Asana, Jira, Slack)
• Experience with data interchange formats such as XML or JSON.
• Solid Experience with AWS, Heroku and Salesforce.

About RattanIndia ltd.

For Details visit: http://www.rattanindia.com">www.rattanindia.com

https://rattanindia.in/">https://rattanindia.in/