Full Stack Developer

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.

About Us

We are building the next generation of AI-powered products and platforms that redefine how businesses digitize, automate, and scale. Our flagship solutions span eCommerce, financial services, and enterprise automation, with an emerging focus on commercializing cutting-edge AI services across Grok, OpenAI, and the Azure Cloud ecosystem.

Role Overview

We are seeking a highly skilled Full-Stack Developer with a strong foundation in e-commerce product development and deep expertise in backend engineering using Python. The ideal candidate is passionate about designing scalable systems, has hands-on experience with cloud-native architectures, and is eager to drive the commercialization of AI-driven services and platforms.

Key Responsibilities

• Design, build, and scale full-stack applications with a strong emphasis on backend services (Python, Django/FastAPI/Flask).
• Lead development of eCommerce features including product catalogs, payments, order management, and personalized customer experiences.
• Integrate and operationalize AI services across Grok, OpenAI APIs, and Azure AI services to deliver intelligent workflows and user experiences.
• Build and maintain secure, scalable APIs and data pipelines for real-time analytics and automation.
• Collaborate with product, design, and AI research teams to bring experimental features into production.
• Ensure systems are cloud-ready (Azure preferred) with CI/CD, containerization (Docker/Kubernetes), and strong monitoring practices.
• Contribute to frontend development (React, Angular, or Vue) to deliver seamless, responsive, and intuitive user experiences.
• Champion best practices in coding, testing, DevOps, and Responsible AI integration.

Required Skills & Experience

• 5+ years of professional full-stack development experience.
• Proven track record in eCommerce product development (payments, cart, checkout, multi-tenant stores).
• Strong backend expertise in Python (Django, FastAPI, Flask).
• Experience with cloud services (Azure preferred; AWS/GCP is a plus).
• Hands-on with AI/ML integration using APIs like OpenAI, Grok, Azure Cognitive Services.
• Solid understanding of databases (SQL & NoSQL), caching, and API design.
• Familiarity with frontend frameworks such as React, Angular, or Vue.
• Experience with DevOps practices: GitHub/GitLab, CI/CD, Docker, Kubernetes.
• Strong problem-solving skills, adaptability, and a product-first mindset.

Nice to Have

• Knowledge of vector databases, RAG pipelines, and LLM fine-tuning.
• Experience in scalable SaaS architectures and subscription platforms.
• Familiarity with C2PA, identity security, or compliance-driven development.

What We Offer

• Opportunity to shape the commercialization of AI-driven products in fast-growing markets.
• A high-impact role with autonomy and visibility.
• Competitive compensation, equity opportunities, and growth into leadership roles.
• Collaborative environment working with seasoned entrepreneurs, AI researchers, and cloud architects.

Job Description:

We are looking for a full-stack Python Django developer to work on the latest technologies for global education. You’ll be part of a cross-functional team responsible for the entire software development life cycle, from conception to deployment.

As a Full Stack Developer, you should be comfortable around both front-end and back-end coding languages, development frameworks, and third-party libraries. With problem-solving approaches and rigorous thinking abilities, we are looking for a learner who may not know all the answers but are obsessive about finding them and know exactly where to look for them.

“If you’re also familiar with Agile methodologies, we’d like to meet you."

Why you should work with us:

Culture:

-  Fun and learning environment

-  Interact with stakeholders and clients from day one on a project

-  Work with professionals across the globe from marketing, to technology, and learn problem-solving from their experiences.

Technology exposure:

-  Exposure to the latest technologies like AWS Cloud Platform, Python Programming, and DevOps Processes.

-  Opportunity to work in Cloud-based Data Integration Solutions and Products.

-  Building our products and solutions on the latest technologies like Python, Django, AWS & Google Cloud, and Microservices.

-  Serverless services like AWS Lambda, SQS, SNS, DynamoDB, etc.

-  Container-based applications i.e. Microservices built on Dockers, we also use AI for data analytics and reporting.

- Work with agile methodology.

Benefits:

- 5-day working week

-  No location constraints

-  Competitive salary

-  Stable work environment

You are suitable if, you:

- Have 2+ yrs of Python experience.

- Have 2 yrs of experience in Django-powered web/mobile apps.

- Extensive experience in Full-Stack application design and development using Python.

- Have hands-on experience in HTML, JS, Bootstrap, Angular, and server-side APIs integration.

- Have worked on Agile projects

- Have a learning attitude, and excellent communication & interpersonal skills.

- Have the ability to work both in teams and individually.

Leaders at The Seenit Co. are passionate about using technology to create an impact on the world they live in. At Seenit, you will get to collaborate with an accomplished team that loves solving real-world problems. You will get to work on cutting edge projects that will shape the next phase of growth for the global luxury industry.

Seenit’s suite of products (http://www.styleade.com/" target="_blank">www.styleade.com) enables the leading luxury retailers around the world to transform their customer experience and build loyal relationships with their customers. The apps allow retailers to make use of their existing infrastructure and resources to deliver a truly omnichannel experience in today's rapidly changing world of shopping. The product has added 50 million USD to the top-line of one of the largest luxury retailers in the world. Store Associates and Stylists have assisted upwards of 100,000 consumers till date.

We would welcome someone to the team who wishes to:

• take ownership of the quality of code powering the product
• take an active role in the definition and evolution of best industry practices and procedures
• design, develop and test the core product software and databases to ensure strong optimization and functionality
• contribute in all phases of the development lifecycle
• support others to succeed and shine in a supportive team culture

• 4+ years experience in building consumer products
• experience of leading a team of 3 or more full stack developer
• Codeigniter Preferred 
• Good knowledge of Mysql and query optimisation
• Experience with PHP 7, HTML5, AJAX, JavaScript, JQuery, CSS, MVC frameworks (Bootstrap), API
• Experience with Ubuntu OS is a plus
• experience deploying softwares to cloud providers such as GCP, AWS

• Proven experience as a Full Stack Developer or similar role with 2+ years of experience.
• Experience developing desktop and mobile applications
• Strong knowledge of at least one back-end languages (preferably Python/Ruby/ Node.js) and JavaScript frameworks (e.g. Angular, React)
• Familiarity with databases (e.g. MySQL, MongoDB), web servers (e.g. Apache) and UI/UX design
• Database design and management, including being up on the latest practices and associated versions
• For us, security is of utmost importance - You understand security concepts deeply and write code to protect us and our users.
• Should be able to architect robust Restful APIs
• Proactive, Strong Result orientation (propose solutions based on product capabilities) and Creativity.
• Good knowledge and understanding of the product development life cycles.
• Good verbal and written communication skills (Advanced English)
• Ability to work independently and as part of a team

Vah Vah! is an ed-tech company that offers online makeup courses in micro-batches to students across India to learn from the leading teachers in top cities. We provide holistic education with lots of practical training that makes our students job-ready with not just the base skills but also the soft skills for great customer service. Our teachers have more than 15+ years of experience in training makeup and have certified more than 1000+ students. Vah Vah! is founded by executives with extensive experience running consumer business and mobile games at scale (over 100 million players) at Zynga. Vah Vah! is backed by a leading investment firm.

Website Link: https://vahvah.com/

The Mission

Vah Vah teaches professional makeup to budding makeup artists and influencers through live online classes. We have students from Srinagar, all the way to the Andamans. And experienced teachers who have worked in Bridal Makeup, Ramp Shoots, Film and more. We empower our students to join the workforce as fully trained makeup artists. This is the future of vocational education, and you can help build it.

Our Culture

• Amazing workplace and colleagues to work with
• We have the right mixture of creativity, analytics and hustle to move fast in the right direction.
• You will work with colleagues who don’t take themselves too seriously but move mountains.
• See yourself evolving every month with new problems to solve and new skill to master.
• Work with the smartest engineers so you can learn from them.
• Competitive salary at par with the best in the industry
• Great stock options so you can benefit from the company's growth.
• Immense exposure to new technologies

Responsibilities:

• Complete ownership of building and maintaining Web APP
• Deliver across the entire app life cycle design, build, deploy, test, release to production and support
• Should be comfortable in building a great consumer user interface and responsive web apps.

Requirements:

• Overall experience of 2-4 years
• React Web Developer with 2+ years of experience
• Should have worked on NodeJS with express framework
• Understanding of Backend services, API implementation, and database systems. - Familiarity with MySQL and Mongo databases
• We encourage all our devs to have a base level of DevOps skills & w.r.t
• Source Control, CI/CD systems, Cloud Services such as AWS, Firebase, GCP Minimum 1 year of experience in responsive app development
• Ability to implement designs and functionality provided by UI/UX teams
• Strong knowledge of JavaScript ES6
• knowledge of Java/J2EE, Spring, Spring Boot, Spring Cloud is a plus

Key Skills:

• React/JS, NodeJS, Typescript
• Familiarity with Analytics integrations
• Conversant with Github, CI/CD pipeline

What you get:

• Amazing workplace and colleagues to work with
• Competitive salary at par with the best in the industry
• Immense exposure to new technologies

Technology Development Manager

Location : Bangalore (5 Days WFH)

Education Qualification : B.Tech/M.Tech

(Must have good communication skills)

Skills Required : Java, JEE, Spring Frameworks, REST, Object Oriented Analysis and Design,Microservices Architecture, MySQL, MongoDb, ElasticSearch, Git, Jenkins, Microservices, JSON, Javascript, Node.js, Amazon Web Services or any other cloud 

Experience : 8 to 17 years

Role :

• As a Technology Development Manager, be passionate about technology strategy & vision, hands-on solution design, critical analytical thinking and team management
• Responsible for Peer review, design, deployment, production support & mentoring the team
• Be a self-starter based on your experience and be able to deliver world-class capabilities for one of the fastest growing startups in the Global Digital Identity space
• Ability to thrive in a fast-paced, results-oriented, execution-focused environment while handling the day to day operations and having full control over the business technology organization

• Be energised in the fine balance between managing team and being a technologist
• Be comfortable with ambiguity. As with any startup, this role and the company will evolve and pivot and times will show more unknowns than known.

Requirements:

• 8-15 years of progressive technology experience as an engineer, an architect, project manager, and a team leader in cross functional teams
• Results driven! Demonstrated ability to successfully have brought a product to market
• Experience with full-stack software development including newer front-end frameworks
• Java, JEE, Python, Spring Frameworks, REST, Object Oriented Analysis and Design, Microservices Architecture, MySQL, MongoDb, ElasticSearch, Git, Jenkins, Microservices, JSON, Javascript, Node.js, Amazon Web Services all important

• Experience and knowledge in Machine Learning & Computer Vision a plus
• Hands-on product management and software development life-cycle experience (especially Agile methodologies)

• Experience leading teams in the successful delivery of large technology projects
• Demonstrated ability to make good technology trade-off decisions, i.e. managing technical debt

• Drives the CI/CD strategy for the product
• Served as technical lead throughout the full development lifecycle, end-to-end, from scoping, planning, conception, design, implementation and testing to documentation, delivery and maintenance

Competencies:

• Can identify leading indicators for problems that is likely to surface in the future
• Can identify large problem patterns, systemic issues and opportunities for larger re-architecture and redesign
• Can troubleshoot the entire product ecosystem effectively
• Considered as a Guru in a language, its internals and the application of the language in a wider context
• Defines coding standards and design approaches across the organization
• Can independently design multi systems and systems with complex interactions
• Can design generic platforms for a wider usage across teams
• Accountable for all designs in the team
• Deep knowledge, understanding and experience with working of different architectural styles 
• Responsible and accountable for NFR aspects of the product
• Responsible for Architecture and Tech stack across the team(s)
• Ability to define (in collaboration with cross functions), plan, deliver and operationalize large releases.
• Create formal mentoring plans and identify mentoring needs for a team
• Contribution to open source projects, open standards
• Flag bearer of
• Freedom and responsibility
• First Principles
• Bias for action
• Earn your badge
• Customer Empathy
• Truth seeking

We are looking for a skilled computer programmer who is comfortable with both front and back end programming. Full Stack Developers are responsible for developing and designing front end web architecture, ensuring the responsiveness of applications and working alongside graphic designers for web design features, among other duties.

Responsibilities

• Developing front end website architecture.
• Designing user interactions on web pages.
• Developing back end website applications.
• Creating servers and databases for functionality.
• Ensuring cross-platform optimization for mobile phones.
• Ensuring responsiveness of applications.
• Working alongside graphic designers for web design features.
• Seeing through a project from conception to finished product.
• Designing and developing APIs.
• Meeting both technical and consumer needs.
• Stay up-to-date with developments in web applications and programming languages.
•  

Requirements

• 1-5 Year of Experience as Full Stack Developer.
• Proficiency with fundamental front end languages such as HTML, CSS and JavaScript.
• Familiarity with JavaScript frameworks such as Vue JS, Angular JS, React, and Nuxt.
• Proficiency with server side languages such as Java, Python, Ruby, PHP.
• Familiarity with database technology such as MySQL, Oracle and MongoDB.
• Experience working on MEAN (Angular JS, NodeJS, Express, MongoDB) and MERN Stack (ReactJS, React Native, NodeJS, Express, MongoDB).
• Optional experience of using AWS.
• Excellent verbal communication skills.
• Good problem solving skills.