Fullstack Developer

Job Description:

PHP Developer (candidates having experience with PHP, WordPress & WooCommerce should only apply and provide the details through the shared link)

Company: Wisetr Technology Pvt. Ltd. ("FunnelKit is one of the brands of Wisetr Technology Pvt. Ltd.") 

Website: www(dot)funnelkit(dot)com

Location: Delhi, Tilak Nagar (work from office/ on-site only)

Experience: 5+ years + AI mindset

Education: Engineering candidates should only apply with relevant experience with WordPress and WooCommerce plugin/ product development (not theme customization)

Working Days: 5 days - Monday – Friday

About FunnelKit

FunnelKit builds powerful no-code funnel and marketing automation products for WooCommerce businesses worldwide. Our mission is to help small businesses grow profitably by giving them the right tools to increase conversions and revenue—without unnecessary complexity.

We are a product-first, customer-driven team that values ownership, simplicity, kindness, and excellence.

Role Overview

This role is ideal for someone who:

• Can lead development of our WordPress & WooCommerce product suite as a senior engineer who thinks beyond code
• Enjoys solving real customer problems
• Has worked on production-level WordPress plugins or SaaS products
• Takes ownership of both development and troubleshooting

You'll drive architectural decisions, mentor team members, and shape products that impact thousands of businesses. We're looking for someone who combines deep technical expertise with product thinking—understanding not just how to build features, but why they matter to customers.

You will work closely with Development, Product, QA, and Customer Success teams to build, improve, and support FunnelKit’s core products.

Key Responsibilities

1. Plugin Development & Product Feature Development

• Build and maintain WordPress plugins to extend site functionality and improve user experience
• Own architecture decisions for complex features across multiple products
• Work with the Product team to convert requirements into high-quality code
• Build custom solutions based on real customer use cases
• Ensure all features are properly tested and documented before release
• Mentor mid-level and junior developers through code reviews and pairing
• Lead initiatives that improve developer productivity and code quality
• Think creatively about technical challenges—finding innovative solutions
• Drive technical standards and best practices for the team

2. WooCommerce Integration & WordPress Hooks

• Develop custom solutions and features specifically for WooCommerce stores using WordPress hooks.
• Utilize deep knowledge of WordPress hooks (actions & filters) to extend core functionality and integrate with other plugins. 

3. Troubleshooting & Release Stability

• Monitor product behavior after updates and releases
• Debug complex cross-system issues and performance bottlenecks
• Ensure smooth upgrades and backward compatibility
• Perform root-cause analysis to prevent repeat issues
• Resolve issues related to plugin conflicts, performance, and compatibility with WordPress and WooCommerce.

4. Product Improvement & Analysis

• Design scalable solutions that work across our product ecosystem
• Analyze L2 support tickets to identify patterns and gaps
• Collaborate with Product and Engineering teams to implement improvements and evaluate technical feasibility and trade-offs

5. Git & Code Management

• Manage code using Git (commits, merges, releases)
• Maintain clean, scalable, and secure codebases
• Follow WordPress and WooCommerce best practices
• Conduct regular code reviews

6. AI-Assisted Development

• Use Cursor AI for code assistance, security checks, and snippet creation
• Improve development speed while maintaining high code quality
• Work closely with the development team to ensure smooth integration of plugins with existing systems
• Document technical decisions and create knowledge-sharing resources

7. QA & Test Case Collaboration

• Create clear use cases for QA testing
• Work closely with QA to ensure all features and fixes are thoroughly tested
• Reduce post-release bugs through strong pre-release validation

8. Internal Support to Customer Success

• Assist Customer Success Engineers with technical guidance
• Help resolve complex L1 issues when required
• Ensure recurring problems are documented and addressed at the product level
• Handle and resolve L2 support tickets for FunnelKit Checkout, Cart, and Bump
• Debug complex WordPress, WooCommerce, and plugin-related issues
• Provide fast, stable, and scalable solutions
• Identify recurring issues and propose long-term product improvements
• Coordinate closely with Customer Success Engineers

9. CSS & Template Development

• Develop and maintain CSS and templates for FunnelKit products
• Ensure responsive, cross-browser compatible designs
• Maintain high UI and performance standards

Required Skills & Experience

• 5+ years of hands-on WordPress development
• Strong experience with:
• WordPress Core & Plugin Development
• WooCommerce internals and its ecosystem (APIs & customizations)
• WordPress hooks (actions, filters, and custom hooks)
• PHP mastery (expert-level OOP, design patterns and SOLID principles)
• Database proficiency - Advanced MySQL skills, query optimization, custom table design
• JavaScript, HTML, CSS
• Strong debugging and troubleshooting skills to resolve plugin related issues
• Security First - Expert in preventing SQL injection, XSS, CSRF; capability checks and input validation
• Experience working on product-based WordPress plugins or SaaS
• Strong understanding of orders, checkout flows, and extensibility points
• Proficient with Git version control and collaboration
• Performance Mindset: Experience optimizing slow queries, managing memory, and profiling
• Technical Leadership: Code review experience, mentoring ability, architecture decision-making
• Communication: Explains complex technical concepts clearly to different audiences
• Ability to work on-site from our Delhi office

Nice-to-Have Skills

• Payment gateway integration and debugging experience
• Background processing and job scheduling (Action Scheduler or similar)
• REST API design and development
• Multi-currency or internationalization experience
• Subscription/recurring billing systems knowledge
• Contributing to or maintaining open-source projects
• Experience building WooCommerce extensions
• Experience with checkout, cart, or conversion-focused products
• Familiarity with performance optimization and security best practices
• Experience using AI tools for development
• Candidates with hands-on experience in Agentic AI systems and working with Claude Code will be given preference.

Why This Role is Exciting

• Product Impact: Build features that directly impact revenue for thousands of businesses
• Cross-Product Thinking: Work across an ecosystem of products, not siloed features
• Innovation Encouraged: Find creative solutions to hard problems—we value ingenuity
• Real Leadership: Influence technical direction without organizational bureaucracy
• Modern Engineering: AI-enhanced workflows, continuous improvement, quality-first culture
• WordPress at Scale: Solve interesting challenges in one of the world's largest tech ecosystems

What Success Looks Like

First 3 Months:

• Lead your first major feature from design to deployment
• Establish yourself as a reliable code reviewer
• Identify and fix a significant performance or architectural issue

First 6 Months:

• Own a product area and drive its technical direction
• Mentor team members with measurable improvement in their skills
• Ship an innovative solution that becomes a best practice

First Year:

• Drive cross-product improvements that benefit the entire ecosystem
• Be the technical leader others consult for complex decisions
• Contribute to hiring and growing the engineering team

What We Value

• Product-minded engineering: Understanding business impact, not just technical elegance
• Ownership mentality: Taking responsibility for outcomes, not just tasks
• Continuous improvement: Always learning, always getting better
• Knowledge sharing: Writing docs, mentoring others, building team capability
• Creative problem-solving: Seeing opportunities others miss, finding better ways

What We Offer

• Opportunity to work on globally used WordPress products
• Competitive senior-level compensation
• High-ownership, low-bureaucracy environment
• Collaborative, product-driven culture
• Competitive salary based on experience
• Long-term growth and learning opportunities
• Technical leadership growth opportunities

How to Apply

• Links to significant projects you've led (GitHub, WordPress.org, portfolio)
• Brief note on a technical challenge you solved creatively

NOTE: This is a full-time, on-site position based in Delhi. Remote or hybrid candidates will not be considered.

FunnelKit is committed to creating an inclusive environment and is an equal opportunity employer. We celebrate diversity and welcome applications from candidates of all backgrounds.

Job Types: Full-time, Permanent

Benefits:

• Health insurance
• Paid sick time
• Provident Fund
• Paid time off

Ability to commute/relocate:

• Tilak Nagar, Delhi, Delhi: Reliably commute or planning to relocate before starting work (Required)

Application Question(s):

• Experience with Core PHP, WordPress & WooCommerce is a must.

Work Location: In person

Core AI Backend Engineer – LLM Fine-Tuning

You know that moment when you don’t just debug code — you train a model, fine-tune it, and suddenly it understands your domain better than you expected? That’s the kind of magic we’re looking for.

We’re building something that turns chaotic social video data into crystal-clear business intelligence. Not just another API — but AI-backed architecture fine-tuned to our world. Systems that marketing teams thank you for, because they feel the intelligence, not just the infrastructure.

Either you feel the craft when you read this, or you don’t. This isn’t just another backend role. This is where you bring together scalable systems and cutting-edge LLMs to build something the world hasn’t seen before.

Who We Are

We’re a small, global team that ships fast. Every line of code and every model choice affects millions of video analysis requests.

Our engineers don’t just build APIs — they architect solutions, they optimize at scale, and now, they fine-tune models to make AI work in the real world. Our CPTO still codes. Our senior engineers make complexity look effortless. Our backend team sets a standard that others ask how we move so fast.

What We Need

We need someone who’s lived both sides of this life:

• Backend excellence: building high-scale, high-performance systems.
• LLM fine-tuning: hands-on with open-source models, not just calling APIs.

Someone who can sit with a requirement at 2pm and by 6pm not only has endpoints working, but also has a fine-tuned model running behind them — customized to our use case.

Your Craft

• JavaScript/TypeScript & NodeJS as core backend tools.
• Next.js for full-stack where needed.
• Rust when performance is non-negotiable.
• Golang/Python as comfortable tools of choice.
• MySQL/Postgres/Redis — wielded with intention.
• AWS ecosystem — your playground, not your puzzle.
• LLM/AI integration you’ve actually shipped.
• Open-source LLM fine-tuning experience:
• Bringing in open-source models (LLaMA, Mistral, Falcon, etc.).
• Fine-tuning/adapting them for specific domains.
• Optimizing for inference cost, latency, and accuracy.

The Reality

The work is beautifully complex. The scale is real and growing. The problems are the kind that wake you up at 3am with solutions.

If you get your energy from building backend systems and adapting LLMs to make them smarter for real-world use, you’ll probably fall in love with what we do. If you’re only interested in APIs without touching models, this won’t be your thing — and that’s completely okay.

How to Apply

If you’re reading this thinking “finally, a team that actually cares about real AI engineering” — we’d love to see something you’ve built.

Not just a resume. Show us your craft:

• An LLM fine-tuning repo.
• A domain-adapted model you worked on.
• A system design where you combined backend and AI.
• Or even a short write-up or voice note explaining what you’ve fine-tuned.

We’re genuinely excited to see what you’ve done and have a meaningful conversation about whether this could be magic for both of us.

Company Description

13kbs.com is a forward-thinking company committed to delivering cutting-edge solutions that empower businesses to excel in the digital era. We bridge the gap between innovation and practicality, ensuring efficiency, security, and scalability at every step.

Our key services include AI-powered solutions, scalable full-stack development, cloud & AWS expertise, comprehensive firewall & compliance reviews, and automation testing. At 13kbs.com, we deliver high-impact solutions that align with the evolving demands of technology while maintaining a strong focus on privacy and reliability.

Role Description:

MERN Stack Developer (On-Site – Rajkot)

This is a full-time, on-site role for a MERN Stack Developer based in Rajkot. The developer will be responsible for developing, testing, and maintaining seamless user experiences using technologies such as MongoDB, Express.js, React, and Node.js.

Daily responsibilities include collaborating with cross-functional teams to define, design, and ship new features; writing clean, efficient, and well-documented code; debugging and optimising applications; and ensuring application scalability and security.

• Qualifications & RequirementsExperience: 1–3 years of hands-on experience in MERN stack development
• Proficient in: MongoDB/Postgres, React, and Node.js
• Front-end expertise: HTML, CSS, JavaScript
• Strong understanding of: RESTful APIs and web services
• Familiarity with: Git or other version control systems
• Experience with cloud services: Especially AWS
• Education: Bachelor’s degree in Computer Science, Engineering, or related field
• Soft Skills: Strong problem-solving abilities and effective communication skills
• Language Requirement: Candidate must be able to understand and communicate in Gujarati
• Location: Must be based in Rajkot or nearby areas
• Work Type: Full-time, work from office only (no remote option)

Important Note

Only apply if you meet all the above criteria, including 1–3 years of experience, proximity to Rajkot, and Gujarati proficiency.

We are looking for a talented Full Stack Developer with strong hands-on experience in Node.js and either Angular, React, or Next.js. The ideal candidate should have experience working with microservices, fintech/banking products, queuing systems, and scalable architectures. This role requires excellent problem-solving skills, strong coding fundamentals, and the ability to work in a fast-paced, product-focused environment.

Key Responsibilities

• Develop scalable, secure, and high-performance full-stack applications using Node.js and Angular/React/Next.js.
• Design, build, and maintain microservices-based architectures.
• Work with large datasets and ensure efficient data processing, storage, and handling.
• Integrate and manage message queuing systems such as RabbitMQ, Google Pub/Sub, or other brokers.
• Collaborate with Product, UI/UX, QA, and DevOps teams to deliver high-quality product features.
• Build reusable front-end components and optimize applications for maximum speed.
• Implement RESTful APIs, backend services, and API integrations.
• Follow best coding practices, testing methodologies, and documentation standards.
• Troubleshoot and resolve issues related to backend, frontend, databases, and cloud deployments.
• Manage deployments and automate workflows using CI/CD pipelines.
• Ensure robust security practices in code, APIs, and database management.

Key Responsibilities:

• Design, develop, and maintain robust backend services using Core Java and Spring Boot
• Develop and optimize queries in MongoDB, including aggregation and indexing
• Build RESTful APIs and integrate third-party services
• Write clean, maintainable, and scalable code following best practices
• Collaborate with cross-functional teams to gather and implement requirements

Required Skills:

• 5+ years of experience in Core Java
• Strong expertise in Spring Boot (REST APIs, Security, Data)
• Hands-on experience with MongoDB (CRUD operations, schema design)
• Experience with Microservices architecture

Location: Remote (Work from Home)

Job title: NodeJS Developer

Job Type: Full-Time

Experience required: 3+ years

Role

As a NodeJS developer at Techwondoe, you will be designing, developing and deploying applications built using nodeJS techstack. You will start working on a project that has cloud functions, services built using nodeJS and deployed into GCP.

Responsibilities

• Develop cloud functions using nodeJS and services using nestJS
• Write unit tests for all the code with good coverage
• Develop and maintain Cl/CD pipelines in gitlab
• Mentor junior engineers by reviewing their code, guiding them in right direction
• Build quality code that is easily readable, scalable and maintainable

Skills Required

• 3+ years of working experience using nodeJS
• Strong expertise in cloud platforms (AWS or GCP)
• Hands on experience with SQL
• Experience in designing and developing serverless applications
• Knowledge of SOLID principles, Design patterns
• Good to have hands on experience with terraform
• Good to have experience in building efficient CI/CD pipelines
• Experience with mentoring junior engineers
• Ability to up-skill in new technologies
• Innovative thinker with strong problem-solving skills

A product developer manages the process of developing a product or enhancing existing products in order to meet customer expectations effectively.

Please find hereunder the details of the requirement for your consideration:

Designation: Full Stack Developer - PHP

Location: Ahmedabad

Company Website: http://www.petpooja.com ( Please go through the web link )

Responsibilities:

. Work with development teams and product managers to create software solutions

. Design client-side and server-side architecture

. Build the front-end of applications

. Develop and manage well-functioning databases and applications

. Write effective APIs

. Test software to ensure responsiveness and efficiency

. Troubleshoot, debug and upgrade software

. Create security and data protection settings

. Build features and applications with a mobile responsive design

. Write technical documentation

. Work with data scientists and analysts to improve software

Qualifications:

. Degree in Computer Science, Software Engineering or relevant field

. Experience with Java, Spring, Restful API's

. Experience with Database development (MySQL, Postgres, etc)

. Proven experience as a Full Stack Developer or similar role (0-5 years)

. Knowledge of multiple front-end languages and libraries (e.g. HTML/ CSS, JavaScript, jQuery)

. Knowledge of multiple back-end languages (e.g. Java, Python) and JavaScript frameworks (e.g. Angular, React, Node.js)

. Familiarity with databases (e.g. MySQL, MongoDB), web servers (e.g. Apache), and UI/UX design

. Experience with AWS or other cloud environments

Due to COVID-19, most of our employees are working from home. We've implemented a virtual hiring process to continue to interview candidates by phone or video and are onboarding new hires remotely. We value the safety of each member of our community because we know we're all in this together.

Petpooja is an inclusive Equal Employment Opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law.