Fullstack Developer

About Techjays

At Techjays, we build production-grade AI platforms for global clients. We operate at the intersection of backend engineering, distributed systems, and applied AI — delivering secure, scalable, and enterprise-ready intelligent systems. Our team has built and scaled products at Google, Akamai, NetApp, ADP, Cognizant, and Capgemini.

About the Role

This is not a feature-delivery role. We are looking for an AI Lead who can architect, own, and scale intelligent backend systems end-to-end. You will drive both technical direction and execution — working across LLM integrations, RAG pipelines, agentic AI workflows, and cloud-native backend systems for global clients.

What You'll Do

• Architect and scale backend systems powering AI-driven applications
• Design and implement RAG pipelines, AI agents, and LLM integrations
• Own systems end-to-end — from architecture to deployment and scaling
• Integrate and optimize LLMs (Claude, GPT, Gemini) for real-world production use cases
• Build high-performance distributed systems with observability and cost efficiency
• Lead backend and AI initiatives with strong technical ownership
• Mentor engineers and raise the technical bar across teams
• Collaborate with product and AI teams to deliver AI-native solutions

What We're Looking For

• 6–10 years of strong backend engineering experience
• Hands-on expertise in Python (FastAPI / Django / Flask)
• Deep understanding of Generative AI and LLM-based systems
• Strong experience with RAG pipelines and Vector Databases (Pinecone, FAISS, ChromaDB, Weaviate)
• Solid knowledge of Agentic AI — building autonomous agents and multi-agent workflows
• Proficiency in AWS or GCP in production environments
• Experience with distributed systems, microservices, and system design
• Strong grasp of Data Structures, Algorithms, and Design Patterns
• Familiarity with WebSockets, Git, Linux/Unix, and CI/CD

Nice to Have

• Experience with Anthropic Claude API and Claude Code
• Familiarity with real-time data systems or streaming (Kafka, etc.)
• MLOps and AI system lifecycle experience
• Optimizing AI systems for latency, cost, and scalability

Who You Are

• You think in systems, not just features
• You take full ownership of what you build
• You are comfortable navigating fast-moving, ambiguous environments
• You stay updated with the latest in Generative AI and backend technologies
• Strong communicator who can collaborate across teams and global clients

What We Offer

• Competitive compensation (Best in Industry)
• Work on production-grade AI systems used by global clients
• Exposure to cutting-edge AI tools and frameworks
• A culture that values clarity, integrity, and continuous growth

Full Stack Engineer – Spacetil

About Spacetil

Spacetil is a modern financial operations and accounting automation platform that helps businesses streamline bookkeeping, banking integrations, transaction processing, reconciliations, and financial reporting. We are building scalable products that simplify complex financial workflows for customers across multiple geographies.

Role Overview

We are looking for a passionate Full Stack Engineer (1–3 years experience) to join our product engineering team. You will work across the entire technology stack to design, build, and maintain scalable web applications and backend services. This role offers the opportunity to contribute directly to product development, collaborate with cross-functional teams, and solve real-world business challenges.

Responsibilities

• Develop and maintain scalable web applications using modern frontend and backend technologies.
• Design and implement RESTful APIs and backend services.
• Build responsive and intuitive user interfaces using React.js and Tailwind CSS.
• Develop robust server-side applications using Java and Python.
• Write efficient SQL queries and optimize database performance.
• Collaborate with product managers, designers, and fellow engineers to deliver high-quality features.
• Participate in code reviews and contribute to engineering best practices.
• Troubleshoot, debug, and resolve production issues.
• Continuously improve application performance, security, and reliability.

Required Skills

• 1–3 years of experience in full-stack software development.
• Strong proficiency in Java and/or Python.
• Experience with React.js and modern frontend development.
• Good understanding of SQL and relational databases.
• Experience with Tailwind CSS for responsive UI development.
• Understanding of REST APIs, authentication, and web application architecture.
• Familiarity with Git and collaborative development workflows.
• Strong problem-solving and analytical skills.

Preferred Qualifications

• Experience with Spring Boot, PostgreSQL, or similar frameworks/databases.
• Exposure to cloud platforms (AWS, Azure).
• Knowledge of CI/CD pipelines and DevOps practices.
• Experience working with financial, accounting, or fintech products is a plus.

What We Offer

• Opportunity to work on a fast-growing fintech platform.
• Flexible remote-first work environment.
• Ownership of impactful projects and features.
• Collaborative and learning-focused engineering culture.
• Competitive compensation and career growth opportunities.

Location: Remote

Experience: 1–3 Years

Employment Type: Full-Time / Contractual

Skills: Java, Python, SQL, React.js, Tailwind CSS

Join Spacetil and help build the next generation of financial automation solutions.

Project Overview

We’re building Express AI, a SaaS platform that allows small and medium-sized businesses (SMBs) to easily train and deploy their own dedicated AI agents for customer service, technical support, sales, and more.

Our vision is to give SMBs the power of enterprise-grade AI without complexity. You’ll help build the core platform that powers this – including agent training interfaces, web deployment, dashboards, and integrations.

Key Responsibilities

• Develop scalable full-stack features using modern JavaScript frameworks

• Build and maintain AI agent training modules (upload docs, FAQs, tone settings)

• Integrate OpenAI, Whisper, LangChain, and other LLM APIs

• Implement user-facing dashboards for chat/voices/social/email agent monitoring

• Design multi-tenant systems with admin-level controls

• Ensure reliability and scalability of the platform as we grow

Tech Stack

• Frontend: React.js, Next.js, TypeScript

• Backend: Node.js, Express, MongoDB (or Postgres), Redis

• AI & NLP: OpenAI API (ChatGPT, Whisper), LangChain, Python (optional)

• DevOps: Docker, AWS or GCP (basic familiarity okay)

• Other: WebSockets for real-time chat, REST APIs, Git

Role Type

• Full Stack Developer (preferred)

• Frontend or Backend specialists also considered, but must be willing to collaborate on both sides

Experience Level

• 3 to 6 years of professional experience

• Previous work with SaaS platforms, AI tools, or multi-tenant architecture is a big plus

Must-Have Skills

• Proficiency in JavaScript/TypeScript

• Strong experience with React.js and Node.js

• Experience working with REST APIs and building secure web apps

• Solid understanding of cloud deployment (AWS/GCP/Firebase)

• Ability to work independently, self-manage, and deliver in a fast-paced environment

Nice-to-Have Skills

• Familiarity with LangChain, OpenAI, AI agent frameworks

• Experience with voice/chat integration

• Prior experience building tools for SMBs or customer support systems

Engagement Type

• Full-time (preferred) or part-time with clear weekly availability

• Remote (India-based candidates only)

Why Join Us?

• Work on a cutting-edge AI platform solving real problems for real businesses

• Fast-moving, no-red-tape team environment

• Build something that will impact millions of small businesses globally

Full Stack Developer 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.
• Staying abreast of developments in web applications and programming languages.

Requirements

• Degree in computer science.
• Experience with ( React+Node ) Or ( react + Angular) Or ( Node + Angular)
• Strong organizational and project management skills.
• Proficiency with fundamental front-end languages such as HTML, CSS, and JavaScript.
• Familiarity with JavaScript frameworks
• 
  
• Familiarity with database technology such as MySQL, Oracle, and MongoDB.
• Excellent verbal communication skills.
• Good problem-solving skills.
• Attention to detail.

We are looking for a Ruby on Rails developer responsible for managing existing ruby on rail projects and any future interchange of data between the server and the users. Your primary focus will be development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating and building the front-end elements required by our team into the application. Therefore, a basic understanding of front-end technologies is necessary as well.

Responsibilities

• Design, build, and maintain efficient, reusable, and reliable Ruby code
• Integration of data storage solutions (may include databases, key-value stores, blob stores, etc.)
• Integration of user-facing elements developed by front-end developers with server side logic
• Identify bottlenecks and bugs, and devise solutions to these problems
• Help maintain code quality, organization and automatization.
• Be an individual contributor and a team player.
• Be able to lead a development project from scratch to execution.
• Maintaining and troubleshooting existing web applications.
• Creating back-end components.
• Connecting applications with additional web servers.
• Maintaining APIs.

Skills

• Experience with Ruby on Rails, along with other common libraries such as RSpec and Resque
• Good understanding of the syntax of Ruby and its nuances
• Solid understanding of object-oriented programming
• Good understanding of server-side templating languages such as Liquid, Slim, etc which will keep on changing based on our technology stack.
• Good understanding of server-side CSS pre-processors such as Sass, based on project requirements
• Basic understanding of front-end technologies, such as JavaScript, HTML5, and CSS3
• Familiarity with concepts of MVC, Mocking, ORM, and RESTful
• A knack for writing clean, readable Ruby code
• Ability to integrate multiple data sources and databases into one system
• Understanding of fundamental design principles behind a scalable application
• Able to create database schemas that represent and support business processes
• Able to implement automated testing platforms and unit tests
• Proficient understanding of code versioning tools e.g. Git, Mercurial or SVN
• Familiarity with development aiding tools such as Bower, Bundler, Rake, etc.
• Familiarity with continuous integration, CICD pipeline.
• Familiarity with Graphql and React framework is a bonus.
• Familiarity with testing tools.

• Bachelor’s degree in Computer Science, Computer Engineering, or related field.

Looking for 1-2+ years’ experience with front/back end web development experience with Magento e commerce experience.

We are looking for an experienced (2+ years’) Web Developer with Magento (PHP) e Commerce experience to join our expanding team to build our product.

The incumbent is required to work on the full development lifecycle, will use their experience of front and back end to build highly responsive websites. He/She will have all the tools needed along with a fantastic working environment, which is driven by a highly motivated and enthusiastic team of developers.

Responsibilities

• Develop on new and existing client projects built using the Magento platform
• Architect and write custom extensions according to best practices
• Build efficient, testable, and reusable code
• Perform a mix of front-end and back-end development on new and existing Magento sites
• Develop new integrations and custom extensions
• Deploy code across development, staging and production environments
• Troubleshoot and resolve bugs found in existing Magento installations
• Integrate Magento with other third-party systems
• Communicate and collaborate with developers on the team
• Develop solutions in given time frames
• Communicate with managers about any issues or concerns.
• Experience creating Modules/Webservices (REST/SOAP)/Themes