Java Fullstack 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.

Software Engineer/ Associate Software Engineer Full stack/ Java track/ UI/ Android

Skills required: -

• Strong knowhow of data-structures and algorithms. -

• Strong core server-side technologies experience (Java/ other) and / or having any of front end/UI skills (Angular, JS, HTML).
  Knowledge of Android is a huge plus. -

• Strong understanding of OO/ design and good software development practices. 

• Strong database skills and good knowhow of databases. -

• Exposure to configuration management, testing, deployment. -

• Hands on development across technologies.

• Exp - 2-4 years
  B.E/ B.Tech (Computer Science/ Equivalent) from a reputed institute.

   

Alternately: -

• Excellent front end/UI skills (JS, HTML, Angular, Flutter) and OR Android skills. 

• Understanding of nodeJS, server-side technologies, exposure to databases. 

• Deep knowhow of data structures, algorithms. -

• Hands on development across technologies.

• Exp- 2-4yrs

• Grad- B.E/ B.Tech (Computer Science/ Equivalent) from a reputed institute

We are looking for a young and enthusiastic personality who loves coding. Who is passionate and ready to tackle some of the most difficult problems in the laundry industry. 

We believe that user-centric design ultimately leads to the best products, so we listen closely to our users, both external and internal. As an engineer on our close-knit, cross-functional team, you’ll be an active voice in shaping our product. 

You will play a role in product planning, drive the implementation and release of major features, and be a champion of best practices for writing well-tested, well-organized code.

Our tech stack is ASP.NET, MVC, Webform, WebAPI, MSSQL Server, JQuery, Javascript, Angular 2 and micro services architecture.Our platform is hosted on Google Cloud. 

• Work with internal business teams and management to define requirements and develop technical specifications.
• You will be creating modules and components and coupling them together into a functional app.
• Creating self-contained, reusable, and testable modules and components
• Developing and integrating RESTful API services.
• Convert legacy code to new tech stack single-page web applications.
• You will be working with payment gateway, barcodes, QR codes, biometrics, integrating different hardware (printer, scanner, cash register, POS terminal, laundry and drycleaning machines, conveyor belt etc), map routing and distance algorithms.

• Strong knowledge of Computer Science fundamentals in object-oriented design, data structures, algorithm design, problem-solving, complexity analysis, databases, networking, and distributed systems.
• 3-4 years of experience with product development (.ASP.Net, C#.Net, WCF, MVC, SQL Server development applications, version control, CI/CD pipelines).
• Should have a strong online presence on different forums like stack overflow etc, Github etc.
• Excellent verbal and written skills. The ability to explain sophisticated architectures to engineers, product managers, and support & operation executives. You should also be able to write a proposal for your idea/solutions and take feedback from the team.
• Previous work experience at a product-based company or startup would be a bonus.

Personality traits we really admire 

• Great attitude to ask questions, learn and suggest process improvements.
• Pays great attention to detail and helps identify edge cases.
• Gives equal importance to planning, coding, code reviews, documentation, and testing.
• Highly motivated and coming up with fresh ideas and perspective to help us move towards our goals faster.
• Follows release cycles and absolute commitment to deadlines.

We are on a mission to make Dry Cleaners and Laundry business winning in the digital era.

We believe in 

• Helping traditional laundries to come at par with digital businesses: Traditional We help laundry businesses adapt modern technology and deliver the customer experience that today’s digital businesses like Swiggy, OLA and Flipkart are delivering. We feel successful when we hear stories like https://www.youtube.com/watch?v=EbB828K28zs&;feature=emb_title">these.
• Building a large profitable business: We envision building a capital-efficient, large profitable business to achieve our mission of making laundry business win. This means less dependence on investors & more ownership with the team. We are one of the few profitable Indian SaaS startups buildinghttps://valuesaas.co/"> value SaaS
• Employee Wellness <> Customer Success: We give as much importance to each team member’s personal & professional success as much as we care about our customer's success. We believe it’s all about balance.

Our impact so far

• 3 Billion garments processed through QDC Dry Cleaning Cloud
• 47 countries
• 1000+ Paid subscribers
• 5000+ Users
• All this could be achieved with a nimble team of 20 from our single office in Noida

• Freedom & Responsibility: If you are a person who wants to take up challenging work & push your boundaries with no one monitoring you, then this is the right place for you. There are no hierarchies. No managers to please.
• Holistic Growth: Building a career doesn’t have to be at the cost of missing out on your personal front. We believe that professional success is worth when the personal goals are nurtured with equal importance. We will support you all in on that journey of yours.
• Transparency: If you ever wanted to know what it’s like to be on an entrepreneurial journey, then working with QDC gives you that opportunity to experience it all first hand.

Vacancy: Full Stack Senior developer for BeYoungBrands start-up - Paris.

Project description:

We are a small innovative team with a big-picture vision. 

Our goal - to help people be healthier, younger, happier and to live long and active lives.   

We are advocates of holistic approach and inclusion. We believe that the best results are brought by uniting science and ancient wisdom which science cannot explain yet.  

Our goal is very challenging – we want to create a one-point access tool to manage induvial wellbeing and health (with a collaboration platform with doctors) from the convenience of home and smartphones.

Our goal if far beyond just teaching how to eat and exercise healthier.  We want gradually to transform the way a patient and client talk and communicate about health issues. 

Our future network of doctors will include only best medicines embracing the holistic approach to each client, accepting limitation and negative impacts of some modern therapies and willing to accept the usage of alternative and holistic therapies by their patients.   

Role description:

The successful candidate to join our team will be the first architect of our ambitious project.  Along with immensely challenging tasks and responsibility, he/she will have joy of being the person to layout the design and develop the initial model of the product.

We are looking for a self-starter with already proven experience. The job will have a title of senior developer and an employee will have to deliver to its title.  We put great worth on the personality of a candidate and his/her ability to get things done, to deliver results and to quickly update one’s knowledge based on the requirement of a task at hand.

Job description:

3+ years of experience

Candidate with experience in both Backend and Frontend technology using Java and Python with JavaScript/Angular/Django. Would prefer Full Stack experience in the current project.

Internal Title: Senior Developer

Experience Range: Mid Level with a proven track record in the development

Skill(s): Python, Django, JavaScript, AngularJS/ReactJS, NodeJS, MongoDB, ExpressJS

Education:

• Bachelor's in Computer Science (Required)
• Master (preferred)

Job Type: Full-time
Location(s): Remote

Responsibilities

• Design, build and maintain efficient, reusable, and reliable codes for front and backend development.
• Build a layout for structured system data and regularly feed and update it.
• Conceptualizing and developing the data, programming and analysis for online behaviour.
• Building a first draft of the AI algorithm.
• Programming machine learning and its applications.
• Design client-side and server-side architecture
• Build the front-end of applications through appealing visual design.
• Develop and manage well-functioning databases and applications.
• Write effective APIs
• Test software to ensure responsiveness and efficiency
• Troubleshoot, debug and upgrade application.
• 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

Technical and Professional Requirements

• Minimum 3 years of relevant experience.
• Proven work experience as a Full Stack developer (Anyone project would do, we are open for freshers with great knowledge and proven experience too).
• In-depth understanding of the entire web development process (design, development and deployment)
• Strong understanding of data structures/algorithm.
• Excellent coding skill in Node js/Angular/Reactjs, JavaScript, Python, Shell Scripts, Groovy.
• Experience in designing, developing and building end to end web applications.
• Responsive Web Design Development experience
• Experience in web libraries.
• Experience with one or more of databases.
• Experience working with deployment and orchestration technologies.
• Knowledge of Agile engineering and testing practices.
• Must have flexibility in work hours
• Knowledge of API Design and Development and Security Patterns on API’s using API Gateway.
• Familiar with modern reactive frameworks and Event-Driven architectural patterns.
• Implementing automated testing platforms and unit tests.
• Good Error and Exceptional Handling Skills.
• Knowledge of Automation scripts.
• Experience in Cloud Technology for Deployment of Services is a plus.
• Analyzing user requirements, envisioning system features and functionality.
• Identify bottlenecks and bugs, and recommend system solutions by comparing advantages and disadvantages of custom development.
• Understand Architecture Requirements and ensure effective Design, Development, Validation, Testing and Performance, monitoring.
• Strong knowledge of front-end languages (e.g. HTML, JavaScript and CSS)
• Very strong Integration knowledge is desired.
• Excellent analytical and time management skills
• Teamwork skills with a problem-solving attitude.

Deliveries plan and personal achievements goal for a

role of Senior developer in BeYoungBrands

1. First 3 months at the role
   1. Develop and builds a new multilingual website to reflect the main features of the project and backend structure.
   2. Build initial backend design and architecture.
   3. Develop personal area zone with automated functions.
   4. Develop security strategy to protect sensitive client information.
   5. Start building algorithm on existing processes and activities of a clients. Integarate currently available research into algorithm.
   6. Be support on daily tasks and automations.
   7. Propose and replace external resources for automation or selling tools with own development plan.
2. Second 3 months at role:
   1. Continue developing interactive client area.
   2. Work further on algoright with integrating research database, database of clients actions and reported results.
   3. Start building mobile application for everyting what is already done in platform.
   4. Build food extension of the platform and mobile section to it with full food directory database, menu planning, photo recognition, input areas and calories calculations.
   5. Start building exercise module (possible with 3^rd party license to use, to be discussed), with video, calories count, instructions, etc.

• 0 to 3 years of experience (or equivalent understanding of software engineering)
• Familiar with Javascript/Typescript and React.js
• Familiar with one backend language (Node, Go, Java, Python) and one relational database (any SQL)
• Willingness and interest in learning new tech/processes (Next.js, Angular, IaaS, etc.)

• Develop new user-facing features
• Build reusable code and libraries for future use
• Ensure the technical feasibility of UI/UX designs
• Optimize applications for maximum speed and scalability
• Assure that all user input is validated before submitting to back-end services
• Define APIs for front-end and back-end
• Consume 3rd party APIs
• Collaborate with other team members and stakeholders

• Strong understanding of JavaScript, its quirks, and workarounds
• Basic understanding of web markup, including HTML5 and CSS3
• Good understanding of advanced JavaScript libraries and frameworks - Angular, RxJS, Internationalization
• Good understanding of asynchronous request handling, partial page updates and reactive components
• Proficient understanding of cross-browser compatibility issues and ways to work around such issues
• Familiarity with front-end build tools
• Proficient understanding of Git
• Good understanding of browser rendering behavior and performance
• Basic understanding of HTTP requests and proficiency in creating REST APIs using Swagger
• Strong understanding of relational databases and its concepts - MySQL
• Ability to write database queries and transactions using sequalize ORM
• We would prefer it the candidate has an experience of min 1 year but a maximum of 3 years with all above mentioned technologies, libraries and frameworks

What You’ll Do:

• Enable and exercise your problem solving and analytical skills.
• Design and develop Java/J2EE based full stack software components including complex modeling, MVC based UI, etc.
• Ensure applications are implemented to meet business and technical requirements.
• Work with high performing engineering teams across global locations.

.What You Need to Be Successful:

• Bachelor’s degree in Computer Science or equivalent.
• Solid 5-10 years hands-on design and coding experience.
• Familiarity with Agile development, JSF/Primefaces, JPA/Hibernate, Spring, ActiveMQ.
• Strong object-oriented design, Java/J2EE and MVC architecture based programming skills.
• Solid relational DBMS skills using MySQL, or other RDBMS products.
• Desirable - Experience in Big Data Technologies (Hadoop, ElasticSearch, Kafka, MongoDB, etc.)
• Nice to have - Real-world experience in large scale, and high availability implementations.
• Experience developing web services using REST and SOAP approaches.