Fullstack 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.

Hello All,

Greetings from RWaltz Software!!!!

👉 We're thrilled to announce that RWaltz Software Pvt. Ltd. is actively looking for a ‘Software Developer- (MERN Stack)’ position. Software Developers, who are passionate about the world of blockchain & cryptocurrency? Join our team and make a difference.

RWaltz Software Group Inc. is a multinational company (MNC) headquartered in Atlanta, Georgia, USA. We provide services like Blockchain, Big Data Analytics, Artificial Intelligence, Machine Learning, ERP solutions, and Web and Mobile applications. 

Job Details:

·        Position: Software Developer (MERN Stack)

·        Qualification: B. Tech, BCA, or any relevant courses

·        Exp Required: 1 – 3 years

·        Job Location: Nasik and Pune, Maharashtra

·        Work Days: 5 days working

Required skills:

·        Good Communication Skills.

·        Excellent technical, diagnostic, and troubleshooting skills.

·        Hands-on experience in MERN stack (MongoDB, Express JS, React JS, Node JS)

·        Experience in server management would be an added advantage.

·        Strong analytical and problem-solving skills.

·        Immediate joiners are appreciated.

Job Description:

·        Candidates must have good experience in the MERN stack (MongoDB, Express JS, React JS, Node JS).

·        Good knowledge of version control like GIT.

·        Analyze & resolve technical & application problems.

·        Liaising with team members, management, and clients to ensure projects are completed to standard.

·        Identifying risks and forming contingency plans as soon as possible.

·        This position is a hands-on role where we expect you to get directly involved with technology, platform, development and deployment methodology choices, high-level software and data flow decisions as well as helping the team with implementation and troubleshooting.

Firmway

Our software’s are used by large corporates and their auditors for automating balance confirmation and accounts reconciliation. We are looking for a star developer who is looking challenging work, shorter deadlines, kickass mentorship, a rock-solid career growth plan.

About the Role

Firmway is looking for a candidate who is willing to with the FinTech Startup to take it to the next level. The candidate must also possess a strong knowledge of web application development using PHP programming language and MySQL Server databases.

Someone who can take ownership of the responsibility and is willing to go that extra mile. Someone who is hungry for knowledge and wants to climb up the ladder quickly. 

Key Tasks and Responsibilities

• Modifying existing code with new features available in current and future deployments.
• Troubleshoot, test and maintain the core product software and databases to ensure strong optimization and functionality.
• Understand user requirements and prepare an algorithm.
• Write clean, high quality, optimized & reusable code.
• Maintain Security of the Application.
• Identifies competitive advantages and technological trends for the benefit of a company.

Key Skills

• Must be proficient in PHP, Laravel, Mysql, AWS technology stacks.
• Must have experience in working on a framework such as Laravel, front-end development skills including Javascript & JQuery.
• Experience with REST-based API Development.
• Knowledge of Object-Oriented Programming (OOP) Concepts, MySQL, CSS3, JSON, XML & MVC.
• Knowledge of Networking and Versioning.
• Familiarity with SQL/NoSQL databases and their declarative query languages.
• Strong programming skills with an understanding of project cycles, development environments, and source control techniques.

Good to Have Skills:

• Ability to work without supervision.
• Efficiently handles tasks in a reasonable amount of time.
• Ability to communicate with clients, colleagues and management to explain complex issues clearly and concisely.
• Excellent learner.
• Multi-task and manage tasks with varying priorities.

Experience: 1 year.

Education : BE / B.Tech / M.Tech / MCA in CS/IT

Benefits

Being part of a startup that’s turning out to be a game-changer, you will be blessed with:

• Freedom to try new things.
• 2 Saturday’s off.
• Dress code – Casual.
• Take-it-when-you-need-it vacation.

Apply here - https://firmway.in/job

Srijan is hiring for the position of Senior JavaScript Developer (React & Node)

with a remote working option.

Skills Required:

• Minimum 3-5 years of experience as a Front-end Developer

• Possess Responsive/Mobile Design Skills

• Knowledge of Cross-Browser Development

• Knowledge of JavaScript frameworks like NodeJS, ReactJS etc.

• Worked on Front End Frameworks like Bootstrap

• Worked on markup languages like HTML, HTML5

• Worked on JavaScript, CSS, and jQuery

• Excellent knowledge of browser troubleshooting and debugging practices and techniques

• Knowledge of some SEO principles

• Knowledge of graphics software such as Adobe Suite, Photoshop, etc.

• Sense of ownership and pride in your performance and its impact on the company’s success

• Critical thinker and problem-solving skills

• Team player

• Good time-management skills

• Good interpersonal and communication skills

• Building interactive consumer data from multiple systems and RESTfully abstracting to the UI through a Node.js backend
• Define code architecture decisions to support a high-performance and scalable product with a minimal footprint
• Address and improve any technical issues
• Collaborate well with engineers, researchers, and data implementation specialists to design and create advanced, elegant and efficient systems

• Writing reusable, testable, and efficient code.
• Perform Code reviews of other team members.
• Design and implementation of low-latency, high-availability, and performant applications
• Integration of user-facing elements developed by front-end developers with server-side logic
• Implementation of security and data protection
• Integration of data storage solutions.
• Liaise with the product management team and architect the application / improve the architecture wherever necessary.

Skills And Qualifications

• 7+ years of the overall experience.
• Strong Practical knowledge and understanding of RESTful API
• Excellent Python coding skills and understanding of Python best practices (PEP8)
• Should handle a team of minimum 4 members
• Excellent detail-oriented, problem-solving skills and the ability to quickly learn and apply new concepts, principles, and solutions
• 7+ years of good hands-on experience in Python, with knowledge of Django
• Good hands-on experience in SQL Database (MYSQL / Postgres)
• Familiarity of Front End Development ( ReactJS )
• Knowledge of user authentication and authorization between multiple systems, servers, and environments
• Able to create database schemas that represent and support business processes.
• Strong unit test and debugging skills
• Proficient understanding of code versioning tools GIT.
• Has experience of working in an Agile Environment.
• Fluent in English (written and oral) Fluency in a second language is preferred.
• Comfortable working remotely with great communication skills for a remote work environment.

Bonus qualifications

• Knowledge of any cloud. ( Especially Azure )