Java Fullstack Consultant

StarApps Studio is a product-driven SaaS company building Shopify apps that power thousands of online stores. We’ve developed 6 highly-rated Shopify apps (averaging 4.9★) used by 30,000+ Shopify merchants worldwide, including over 1,000 Shopify Plus stores. In just a few years, our bootstrapped team grew from $5.5M to $10M in Annual Recurring Revenue (ARR) by obsessing over quality and merchant success. We’re a tight-knit, 20-person team based in Baner, Pune, on a mission to help e-commerce brands create world-class shopping experiences.

Role Overview

We are looking for a Full Stack Developer who will own features end-to-end with an emphasis on backend excellence. In this role, you will design and optimize complex data models and API architectures in Ruby on Rails, implement robust background job queues (e.g. delayed_job) for heavy workloads, and perform rigorous performance tuning to ensure our systems scale. On the frontend, you'll build and integrate React components to deliver complete, user-friendly features. This is a role for someone who loves tackling deep technical challenges in the backend while also crafting intuitive user interfaces – an opportunity to leverage your backend expertise while driving full-stack product ownership.

Key Responsibilities

• Architect & Optimize Backend: Design scalable database schemas and efficient data models. Develop high-performance RESTful APIs and services in Ruby on Rails, ensuring clean, maintainable code and great performance.
• Backend API Development: Design, implement, and maintain robust backend services and RESTful APIs in Ruby on Rails to support new features and internal tools.
• End-to-End Performance Tuning: Optimize application performance across the stack – from minimizing frontend load times to improving backend query efficiency – for our high-traffic, data-intensive apps.
• Collaboration & Agile Delivery: Work closely with designers, product managers, and QA to translate requirements into technical solutions. Participate in sprint planning, code reviews, and daily deployments to ship features continuously and reliably.
• Quality & Maintenance: Write clean, maintainable code with appropriate test coverage (unit and integration tests) to ensure reliability. Monitor, debug, and resolve issues in production, and continually refactor and improve existing code for stability and performance

What We’re Looking For (Requirements)

• 4–8 Years Experience: Proven experience as a software developer in a product company (experience in e-commerce or SaaS is highly preferred). You have built real products used by actual customers at scale.
• Ruby on Rails Expertise: Strong command of Ruby on Rails. Experience designing RESTful APIs, working with MVC architecture, and using Rails best practices. You should understand how to structure large Rails applications for maintainability.
• Backend Proficiency: Comfortable building server-side applications and APIs with Ruby on Rails. You can implement business logic, integrate with databases, and create RESTful endpoints (bonus if you’ve worked with GraphQL or other backend frameworks).
• Database Skills: Proficiency with PostgreSQL (or similar RDBMS). Capable of writing complex SQL queries, optimizing queries/indexes, and designing efficient relational schemas. Familiarity with Redis or caching strategies is a plus.
• Front-End Proficiency: Comfortable building user interfaces with React and modern JavaScript/TypeScript. Able to implement frontend components that consume APIs and provide a smooth user experience.
• System Design & Quality: Solid understanding of web application architecture, performance tuning, and scalability concerns. Experience with profiling, benchmarking, and optimizing web applications. Commitment to writing clean, maintainable code with proper tests.
• Product Mindset: You care about the why behind the features. You are comfortable digging into requirements, questioning assumptions, and ensuring that we build solutions that truly solve merchant problems.
• Adaptability & Collaboration: Excellent problem-solving skills, communication, and ability to work in a fast-paced, collaborative environment. You are a self-starter who can take ownership of tasks and drive them to completion, but also know when to ask for help.

Tech Stack

• Frontend: React, TypeScript/JavaScript, HTML5, CSS3 (Tailwind/Bootstrap), modern build tools (Webpack, Babel).
• Backend: Ruby on Rails (REST APIs, background jobs), some services in Python.
• Database: PostgreSQL.
• Cloud & DevOps: Amazon Web Services (EC2, S3, RDS, CloudFront), Docker, CI/CD for daily deployments.
• Tools: Git (GitHub), Agile issue tracking (JIRA/Trello), and a keen use of automated testing.

(Don’t worry if you aren’t familiar with every item – we value willingness to learn. This is our current stack, and we continually adopt new technologies that improve our products.)

Why Join Us

• High Impact & Ownership: Your work will directly enhance the shopping experience of 50M+ shoppers daily. At StarApps, developers deploy code daily and see the immediate impact on thousands of merchants – you’ll own projects end-to-end and build features that matter.
• Fast-Growing, Profitable Startup: Join a bootstrapped, profitable company on an exciting growth trajectory (from $4M to $10M ARR). There’s no bureaucracy here – just a passionate team obsessed with product quality and merchant happiness. You’ll be part of our core team as we scale, with ample opportunities to grow into leadership roles.
• Cutting-Edge Tech & Challenges: Work with modern technologies (React, Rails, AWS) on performance-intensive applications. Tackle complex challenges in scaling, optimization, and UX for a global user base – continuously sharpen your skills in a supportive, learning-focused environment.
• Collaborative Culture: We are a small 25-person team that operates like a close-knit family. You’ll work side by side with experienced founders and a talented team that values innovation, humility, and continuous improvement. Our culture is open, empathetic, and growth-oriented – every voice is heard, and every team member plays a crucial role in our success.

Growth & Benefits: We invest in our team’s growth. Expect a competitive salary, performance bonuses, and whatever tools you need to do your best work. We sponsor professional development (courses, conferences, books) and encourage knowledge-sharing. You’ll enjoy a flexible leave policy, team off-sites, and the excitement of building a global product from our new office in Baner, Pune.

Job Description:

• 5+ years of development experience
• Expertise in IBM MDM version 11.x (Advanced Edition) product, hands-on multiple implementation experience.
• Hands on experience with IBM MDM Customization using features which includes Extension, Addition, Business proxies, SDP, Match-Merge Rules, Event Manager, Notification
• Exposure to MDM Information Domains (Party, Agreement, Location)
• Expert Java, JEE development background with RSA/ RAD, Websphere, MDM Workbench, SOAP Web Services, XML, XSD, WSDL
• Intermediate knowledge of SQL, Joins, Triggers(DB2/Oracle)
• Working knowledge of concepts like Service Oriented Architecture (SOA) and how to use these with different types of integration technologies

Primary Skills

• Expertise in IBM MDM version 11.x
• Hands-on multiple implementation experience.
• Customization using features
• Expert Java, JEE development background
• Intermediate knowledge of SQL

Secondary Skills

• Working knowledge of concepts like Service Oriented Architecture (SOA) and how to use these with different types of integration technologies
• Ability to work both independently and as part of a team

Our Tech Stack: React.js, Node.js, MongoDB, AWS

https://www.onedigitaltrust.com/">OneDigitalTrust, Inc. is a B2B2C software startup disrupting the traditional estate planning & wellness industry to serve all adult Americans, but especially those that usually cannot afford the traditional methods to protect themselves and their loved ones. 

We are currently recruiting a Sr. Full Stack Engineer to add to our team.

We are looking for a self-motivated, goal-driven individual to help advance their experience and learn from a collaborative environment and help take our company to the next level.

Our platform is an enterprise white-label configurable platform with comprehensive capabilities that sells itself. Our biggest goals are to continue to enhance the capabilities of the platform to meet the needs of the users.

The following would be your responsibilities:

• Assuming full-stack technical delivery of the Company’s SaaS platform under the direction of the CTO; supporting the architecture and development of the product platform;

• Supporting the policies, and procedures of Company’s platform security to adhere to industry­ standards and as may be requested in case of security audit requests;

• Helping in the creating/management of the Development, Testing (QA) and Production architecture, standards processes and procedures for the product/platform;

• Helping improve the technical team's processes as per our retrospective learnings and best practices;

• Estimating bug/feature implementation tasks to help with sprint/release planning

• Experience with creating, and maintaining third-party integration partner's technical relationships and APIs integration; including handling issues, version changes, and impacts to the platform;

• Delivering and Maintaining our continuously enhanced ODT product platform;

• Helping ensure the regular release, enhancement, maintenance and operation of the ODT DEV/TEST/PROD infrastructure and environment and uptime;
• Providing key inputs into the definition of the platform’s evolution from both a requirements and technical implementation and maintenance perspective; and

• Supporting Company business development and marketing activities to promote the sale and after-sale support to prospects and customers.

The following describes the type of person we are seeking:

Experience: 

• Strong TDD mindset for automated testing, and experience with lean/agile development methodologies in a startup environment

• Experience with maintenance of CI/CD based software delivery

• Ability to get up to speed quickly on the existing code base

• Having an architectural mindset and identify where maintain and enhance systems, but also know when we can refactor components

• Have a structured / process-oriented way of thinking and are able to build new features and models that will last through significant business scaling

• Can understand business needs and ability to maintain high-value product to optimize for the best user experience.

• Bonus points for heavy test automation experience and front-end/UI experience with Storybook

What We Offer:

Competitive salary

Startup culture with a strong team-centric environment. We work hard and have fun.

Independence to work autonomously. We care about results. The opportunity to learn & master the art of agile software delivery and automated testing. We invest heavily in the development of our team members.

·        Designing and building responsive and mobile-friendly websites optimized for different devices and browsers

·        Writing clean, efficient, and well-documented code using languages such as HTML, CSS,Bootstrap and JavaScript

·     Implementing and maintaining website content management systems

·     Troubleshooting and debugging issues to ensure websites are functioning correctly

·        Staying up-to-date with the latest web technologies and industry trends to ensure the website is current and secure

·        Creating and managing databases for website functionality

·        Ensuring website accessibility and security to protect sensitive data and user information

·        Maintaining and updating existing websites

·        Testing both new and current website and correcting potential errors that may arise

We are seeking a highly skilled and experienced MERN (MongoDB, Express.js, React, Node.js) Stack Developer to join our dynamic development team. As a MERN Stack Developer, you will be responsible for designing, developing, and maintaining scalable web applications using the MERN stack framework.

• 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.
• 
  

We’re looking to hire an experienced Shopify developer who can develop custom themes on the Shopify platform as per the design shared by our design team. In this role, you will be expected to set up the environments and develop the Shopify theme. You should be willing to learn and work on new technologies.

Responsibilities

• Convert shared custom designs into Shopify websites
• Expert-level knowledge of Shopify Liquid templating language to edit the website
• Add new sections, filters, products, etc.
• Integrating third-party and platform-supported apps in the websites
• Analyze the requirements and provide solutions
• Work on issue debugging and troubleshooting
• Use Shopify liquid, jQuery, CSS, and HTML to deliver bugfree interfaces as required
• Use Shopify JS APIs (storefront, AJAX Cart, Sections, etc.) to deliver the required functionality
• Additional: Candidates with knowledge of WordPress Development will be preferred

Qualifications

• Strong understanding of the Shopify platform
• Excellent Communication Skills
• 1+ years of development experience

• 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 the software.

Qualifications:

Degree in Computer Science, Software Engineering or relevant field.
Experience with Java, Spring, and Restful API's.
Experience with Database development (MySQL, Postgres, etc).

Proven experience as a Full Stack Developer or similar role. 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

1. Good communication skills, should able to demonstrate website features
2. Must have good hands-on experience on HTML/CSS and Javascript,C#
3. Experience using SQL to update and retrieve data
4. Good to have experience with vue.js, AngularJS, selenium frameworks and code repositories such as GitLab
5. Analytical skills
6. Understanding of testing frameworks

1. Collaborate with other developers and engineers to design, build, and maintain applications
2. Candidate is responsible for design and development of small modules in ASP.Net core MVC, C#, SQL Server and client side technology as javascript/jquery
3. Write and debug code
4. Troubleshoot application issues
5. Ability to learn and pick up new frameworks

Responsibilities

• Developing user-focused website applications.
• Seeing a project from conception to finished product.
• Working alongside designers and mobile developer.
• Meeting both technical and end-user needs.

Must Haves

• Proficiency in fundamental front-end languages such as HTML, CSS (Including SASS), and JavaScript (Also comfortable with the JS library: jQuery, React or Angular)
• Proficiency in server-side language PHP.
• Comfortable with Database systems (MySQL, SQL), NOSQL (i.e. Mongo dB)
• Strong understanding of how a server works
• VCS (Version control system): Git
• Ensuring the developing application(website) has met the security standards: Front end Back end
• Testing: Experience with unit testing and tools
• WordPress development
• Working with API (REST)
• Evaluating code to ensure it meets industry standards, is valid, is properly structured, and is compatible with browsers, devices (Mobile).
• Experience in Cloud Computing (i.e. AWS, Google Cloud Platform) is a plus.
• Attention to detail
• Creative vision
• Good organizational skills
• Good problem-solving skills
• Patience, a big one
• Identifying problems uncovered by customer feedback and testing, and correcting
• Able to develop ideas and processes and clearly express them

Good to Have

• Comfortable with MVC frameworks (Zend, Laravel)