Mainframe Developer

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.

Role Overview 

We are seeking an enthusiastic Software Engineer (Full Stack) with 3- 5 years of experience to join our growing team in Noida. In this role, you will play a pivotal part in designing and developing innovative SaaS products, contributing across both backend and frontend stacks, and helping drive digital transformation in a traditionally paper-driven domain. 

This is a high-impact role where your work will directly influence the future of rare disease diagnostics in India and globally. 

Responsibilities 

• Contribute to all facets of software development and design 
• Break down complex problems into modular, scalable solutions 
• Write clean, efficient, well-commented code (Java, JavaScript, HTML, CSS) 
• Develop robust and scalable web applications using Java Spring Boot and Hibernate 
• Build and maintain RESTful APIs and integrate third-party services 
• Work with MySQL databases and write optimized SQL queries 
• Collaborate in Agile teams—participate in sprint planning, stand-ups, retrospectives 
• Perform bug fixes, troubleshoot technical issues, and ensure system stability 
• Design technical documentation and automated test suites 
• Stay updated with emerging technologies and tools relevant to the tech stack 
• Maintain a productive in-office work environment with essential infrastructure 

Requirements 

Experience 

• 3-5 years of hands-on software development 
• Experience working in Agile teams using tools like Azure DevOps or JIRA 

Technical Skills 

• Proficient in: Java, Spring Boot, Hibernate, MySQL, RESTful APIs 
• Strong front-end development using JavaScript, HTML, CSS 
• Solid understanding of Object-Oriented Design and common design patterns 
• Skilled in SQL and database interactions 
• Experience with token-based authentication and test-driven development 
• Familiarity with Git for version control 

Soft Skills 

• Strong analytical and troubleshooting abilities 
• Excellent communication and team collaboration skills 

Plz find the below jd for Recro.io and JD attached below .

Please find below the JD for this role.

Request to share some profiles as this is a priority role.

Details: (2 weeks WFO and then Remote - US Shift (3 hours anytime in morning/afternoon and rest of 5 hours from 8 PM to 1 AM))

Experience: 6 - 8 years

Budget - 16 LPA

if strong can consider 5 years of experience also.

Skill sets: .NET, MVC, .NET Core, Angular 2+, MySQL, 

Primary Responsibilities:

• Design and develop software applications using .NET, MVC, .NET Core, Angular 2+, MySQL, Javascript, HTML5, and CSS.
• Collaborate with product managers, designers, and other engineers to define software requirements and specifications.
• Write clean, efficient, and maintainable code while adhering to coding standards and best practices.
• Troubleshoot, debug, and resolve software defects and issues in a timely manner.
• Optimize application performance and ensure scalability.
• Perform code reviews and provide constructive feedback to team members.
• Stay updated on the latest industry trends and technologies to continuously improve your skills.

Qualifications:

• Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent work experience).
• Proven experience in software development with expertise in .NET, MVC, .NET Core, Angular 2+, MSSQL, Javascript, HTML5, and CSS.
• Strong problem-solving skills and the ability to think critically to identify and resolve complex technical issues.
• Excellent communication and teamwork skills.
• Self-motivated and able to work independently as well as part of a team.
• Experience with version control systems (e.g., Git) is a plus.

Regards

Divya Mounica

HR Recruiter

What is the role?

You will be responsible for architecting and developing features on the application end to end. You will be working closely with the Product Managers and the Technical architect to come up with high-quality, resilient, and highly performant applications.‍

Key Responsibilities

• Design and develop SaaS-based applications based on microservices architecture.
• Work on core backend and ensure it meets the performance benchmarks.
• Work on the front end with ReactJS.
• Designing and developing APIs for the front end to consume.
• Constantly improve the architecture of the application by clearing the technical backlog.
• Meeting both technical and consumer needs.
• Staying abreast of developments in web applications and programming languages.

What are we looking for?

An enthusiastic individual with the following skills. Please do not hesitate to apply if you do not match all of it. We are open to promising candidates who are passionate about their work and are team players.

• Education - BE/MCA or equivalent.
• Overall 4+ years of experience.
• Agnostic/Polyglot with multiple tech stacks.
• Worked on open source technologies – NodeJS, ReactJS, MySQL, NoSQL, MongoDB, DynamoDB.
• Good experience with Front-end technologies like JavaScript frameworks, ReactJS, AngularJS.
• Backend exposure – good knowledge of building API.
• Worked on serverless technologies.
• Efficient in building microservices in combining server & front-end.
• Knowledge of cloud architecture.
• Should have sound working experience with relational and columnar DB.
• Should be innovative and communicative in approach.
• Will be responsible for functional/technical track of a project.

Whom will you work with?

You will closely work with the engineering team and support the Product Team of Plum.

We are

A fast-growing SaaS commerce company based in Bangalore with offices in Delhi, Mumbai, SF, Dubai, Singapore, and Dublin. We have three products in our portfolio: Plum, Empuls and Compass. works with over 1000 global clients. We help our clients in engaging and motivating their employees, sales teams, channel partners or consumers for better business results.

Way forward

We look forward to connecting with you. As you may take time to review this opportunity, we will wait for a reasonable time of around 3-5 days before we screen the collected applications and start lining up job discussions with the hiring manager. We however assure you that we will attempt to maintain a reasonable time window for successfully closing this requirement. The candidates will be kept informed and updated on the feedback and application status.

Bluecore is a marketing technology company that’s reimagining how the world’s fastest-growing retail brands transform casual shoppers into lifetime customers. Through our patented retail data model and the recent release of Bluecore Communicate™ and Bluecore Site™, we replace manual processes with an intelligent, AI-driven workflow. We are credited with doubling email revenue and increasing customer retention for more than 400 brands, including Express, Tommy Hilfiger, The North Face, Teleflora, and Bass Pro Shops. We have been recognized as one of the Best Places to Work by Glassdoor and ranked No. 241 on the Inc. 500 List, the most prestigious ranking of the nation’s fastest-growing private companies.

Bluecore’s Integrations Engineering (IE) unit is a software engineering team dedicated to helping Bluecore customers extract maximum value from the Bluecore Retail Data Platform.  As an IE, you will bring your technical know-how to the main connections of the Bluecore engine to our clients - drawing meaningful intelligence from their websites and implementing marketing solutions that map to the customer’s vertical, audience behavior, and product mix.

As an Integrations Engineer, your principal responsibilities will lie in (1) maintaining and writing JavaScript-based integrations that live on client websites, (2) configuring, monitoring, and maintaining the intake and manipulation of client data, and (3) utilizing internal infrastructure, tooling and documentation to solve complex, often-unique, client-specific problems. It is important to be detail-oriented in your work, as we work closely with a multitude of the industry’s top online retailers, all of which have very stringent requirements around the look and feel of their strategic communications.

You Are A Perfect Fit If You Love:

-Solving unique, complex problems: You are someone who can think critically, often on the fly, about nuanced technical problems to devise a scalable, maintainable solution. You enjoy the puzzle and the process of iterating and ideating before implementing a solution, and you are able to break complex problems into simple components for better analysis and digestion.

-Metrics and Data: You are someone who finds yourself consumed by daily, weekly and monthly metrics and loves turning those into best practices. Seriously, your work will be driving executive-level decision-makers at industry-leading brands on best business practices.

-Curiosity and Growth: You are someone who actually believes that diversity in thought and skills makes for a better workplace and a better you.

Responsibilities

Write client-side JavaScript to be run on clients' websites and configure custom recommendation logic using domain-specific tooling.

Develop the best technical solution possible for the toughest challenges that our customers will throw at you.

Ideate, develop, and improve upon internal tooling, procedures, and processes that facilitate the work of the Technical Services team.

Monitor the overall health and uptime of our most critical connections to clients

Requirements

Successful completion of reputable schooling in Computer Science or Coding Bootcamp.

Fluent in JavaScript and familiar with various other web development technologies. 

Ability to take ambiguous workflows and turn them into structured processes.

Nice to have

Exposure to (or interest in learning!) SQL, Python, or Google Cloud Functions.

Familiarity with Marketing, Advertising, eCommerce, or other Emerging Technology (Artificial Intelligence, etc.) platforms.

Ability to grow into a client-facing technical resource as a career progresses in Bluecore

Job Description :

- Should have handson experience of more than 1+ years

- Good knowledge of NodeJS, ExpressJS or Restify

- Should have good knowledge of JavaScript.

- Experience implementing frontend using Angular 2+.

- Any database knowledge (SQL.Mongo or NoSQL)

- Basic understanding of version control using GIT

- TypeScript knowledge would be a plus

- Should have good logical skills.