
COMPANY- LIGHTWAVE CONSULTANTS
Position: Ruby on Rails Developer
Experience : 3-7yrs
Location : Lower Parel, Mumbai (Hybrid Work Model)
Job Overview:
We are seeking a proficient Ruby on Rails Developer who brings strong object-oriented programming (OOP) principles, an API-first approach, and experience building scalable applications. The ideal candidate should be comfortable working with modern frontend frameworks, integrating APIs, and contributing to robust, maintainable, and performant backend systems. Familiarity with containerization technologies such as Docker and Kubernetes is a plus. Exposure to other backend languages like Python, Go, or Elixir is an added advantage.
Key Responsibilities:
● Design, build, and maintain scalable web applications using Ruby on Rails.
● Apply OOP principles and design patterns to ensure maintainable and modular codebases.
● Build and maintain RESTful and GraphǪL APIs to support frontend and external integrations.
● Collaborate with frontend teams to ensure seamless integration with modern JavaScript frameworks (React, Vue, etc.).
● Write clean, efficient, and secure code following best practices in performance, testing, and documentation.
● Ensure the system is scalable and performant, capable of handling large-scale data and user interactions.
● Participate in code reviews, system architecture discussions, and continuous improvement processes.
● Work in agile teams, using CI/CD pipelines and version control effectively.
● Implement containerized services and deployments using Docker and optionally Kubernetes.
● Actively contribute to technical decision-making, mentoring junior developers, and maintaining high engineering standards.
Required Skills & Ǫualifications:
●Strong hands-on experience with Ruby on Rails and solid understanding of Ruby language constructs.
● Sound knowledge of OOPs concepts, SOLID principles, and design patterns.
• Proven experience building and maintaining APIs (RESTful and/or GraphǪL).
● Comfortable working with frontend developers and integrating with modern frameworks (React, Vue, etc.).
● Experience working on scalable, production-grade systems.
● Familiarity with SǪL and ActiveRecord, performance tuning, and caching strategies.
● Version control expertise using Git and experience with code review workflows.
● Strong hands-on experience with TDD using RSpec and a clear understanding of testing strategies.
● Comfortable with debugging, profiling, and monitoring production systems.
Preferred Qualifications:
● Exposure to Docker and basic container orchestration with Kubernetes.
● Experience with background job processing (Sidekiq, Resque).
● Knowledge of CI/CD pipelines, deployment strategies, and infrastructure-as-code practices.
● Familiarity with monitoring and alerting tools for backend services.
● Experience working in a microservices or service-oriented architecture (SOA) setup.
● Working knowledge of additional backend languages such as Python, Go (Golang), or Elixir.
● Understanding of security best practices in web development and API design.
● Familiarity with service observability, logs, metrics, and tracing tools

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● Learning new things, asking questions
● Analyzing user feedback with the team to learn on what to build
● Iterating on feedback to continuously improve features
● Building APIs and microservices for a system that can scale to millions of emails per
month
● Working closely with our product designers and frontend developers to provide a
delightful user experience
● TDD to make sure all features work as intended
Qualifications:
● B.Sc. in Computer Science or a related field, or equivalent experience
● 2+ years experience working as a software engineer
● Proficiency in Ruby / Rails or equivalent web development language/framework
● Strong in SQL and relational database such as PostgreSQL
Software Architect
Bangalore, India / Engineering/ Full-time
Job Overview:
As a Software Architect, you will play a crucial role in designing, developing, and maintaining robust and scalable backend solutions for our software applications. You will be responsible for making strategic technical decisions, and collaborating with cross-functional teams to ensure the successful delivery of high-quality software products with scalable backend infrastructure.
Responsibilities:
- System Architecture:
- Design and architect scalable, efficient, and maintainable backend systems.
- Collaborate with cross-functional teams to understand business requirements and translate them into technical specifications.
- Technical Leadership:
- Provide technical leadership and guidance to the development team, ensuring best practices and coding standards are followed.
- Mentor and coach team members, fostering a culture of continuous learning and improvement.
- Backend Development:
- Lead the development of backend components, modules, and features primarily on Ruby on Rails tech stack and also be open to contribute in other tech stacks based on Java/Kotlin and Python.
- Implement and maintain APIs, data models, and database structures to support application functionality.
- Performance Optimization:
- Identify and address performance bottlenecks, ensuring optimal system response times and resource utilization.
- Implement caching strategies and other performance optimization techniques.
- Collaboration:
- Collaborate with frontend developers, product managers, and other stakeholders to integrate frontend and backend components seamlessly.
- Participate in code reviews to ensure code quality, adherence to standards, and knowledge sharing within the team.
- Security and Compliance:
- Implement and enforce security best practices to safeguard sensitive data.
- Stay updated on industry trends and emerging technologies to ensure compliance and security standards are met.
- Documentation:
- Create and maintain comprehensive technical documentation for the backend architecture, APIs, and development processes.
- Continuous Improvement:
- Proactively identify opportunities for process improvement and contribute to the evolution of development methodologies and practices.
Qualifications:
- Overall 10+ years of experience, with 2+ years as a Software Architect with a focus on backend development using Ruby on Rails.
- In-depth knowledge of Ruby on Rails framework, database design, and API development.
- Strong understanding of software architecture principles, design patterns, and best practices.
- Experience with performance optimization, scalability, and security considerations.
- Excellent communication and collaboration skills.
- Leadership experience with a demonstrated ability to mentor and guide development teams.
- Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent work experience).
Bonus points:
- Familiarity with front-end technologies and frameworks(ReactJs).
- Experience with other programming languages.(Kotlin/Python)
- Experience with cloud platforms and microservices architecture.
- Knowledge of DevOps practices and tools.(AWS, Kubernetes, )
Join us in revolutionizing the way software solutions are developed, and contribute to building cutting-edge applications that make a positive impact on our users and the industry.
and Rails framework along with PostgreSQL database. Someone who is passionate
about coding and loves to work in an ongoing challenging environment. You will be part
of a talented software team. You have to consistently deliver in a fast paced
environment and should be more than willing to build software that people love to use.
Key Responsibilities
The individual role that you’ll play in our team:
● Developing large multi-tenant applications in Rails.
● Understanding Rails best practices and religiously introducing those to our
codebase.
● Knowledge on how to do effective Refactoring.
● Ability to write unit tests and following those practices religiously.
● Working closely with the Product managers and UX team.
● Helping QAs to write automated integration tests.
● Staying up-to-date with current and future Backend technologies and
architectures.
Read the ‘Skills and Experience’ section, it is not the usual yada yada, you’ll be
asked specific questions on these.
Skills and Experience
● Ruby on Rails architecture best practices
● Knowledge on the latest versions on ROR
● Strong OOP knowledge in Ruby.
● Asynchronous Networking in Ruby
● Designing RESTFul HTTP APIs using JSON-Schema or JSON API (jsonapi.org).
● Ability to architect and develop API only backend
● Experience in using ActiveRecordSerializer
● Understanding O-Auth2 or JWT (Json Web Token) authentication mechanisms.
● How to use RSpec
● Rails Security Best Practices
● PostgreSQL and Rails.
● SQL concepts like Joins, Relationships etc.
● Understanding DB Partition strategies.
● Knowledge about refactoring ActiveRecord Models (read this - “7 Patterns to
Refactor Fat ActiveRecord Models”).
● Understanding scaling strategies for a high-traffic Rails applications (2 million+
requests a day).
● Background Job processing using Redis and Sidekiq
● Experience in using Amazon Web Services (AWS) tools.
● Writing automated Deployment Scripts using Capistrano, Ansible etc.
● Sending emails in Rails
● Knowledge in Linux and Git is mandatory
We are looking to hire a talented ruby on rails developer to manage the interchange of data between our users and the server. You will be responsible for developing and maintaining the server-side logic for the central database, testing performance, troubleshooting, and integrating front-end elements into the application.
To ensure success as a ruby on rails developer, you should have extensive experience working with ruby and back-end integration techniques. Ultimately, a top-level ruby on rails developer can create clean, functional code that perfectly suits the needs of the company.
Senior Software Engineer
The Company strives to provide a great service and to deliver excellent user experiences that improve the value of our customers.
We are seeking a new developer to join our development team. We work on a variety of projects using various exciting technologies such as Ruby on Rails, AWS, and JS frameworks such as Node and React to build outstanding webapps and provide business support to meet our customer's needs.
The ideal candidate will be someone who loves to learn and is willing to look for new and innovative solutions to problems and challenges for our customers. They may or may not have a wealth of experience but, the willingness to learn, try new things, and can think problems through and analyze available options is more meaningful, we can guide you the rest. You will have opportunities to combine your technical ability, critical thinking, and design experience.
Cool things to have:
- Ability to communicate clearly. Programming isn't just about writing code, it's about being able to communicate ideas with your team, customers, and the machine
- Keen desire to We are constantly aspiring to improve our work and ourselves, by constantly learning we can do this.
- Self-motivated. Even if a decision turns out to be wrong, this is better than being Trying and learning from failures is hugely valuable.
- Knowing when to ask for Try for as long as you can but if you get stuck, ask for help. Your teammates are here to support you and your development.
- Critical Be able to base decisions on the information available, not just blindly accepting solutions without investigation.
Technical Requirements:
- Strong programming experience. We primarily write in Ruby, so experience here is a
- Knowledge of Object-Oriented design patterns as well as Test-Driven
- Be familiar with Rails, Sinatra, etc, and how these can be used to implement RESTful
- Knowledge of RDBMS such as Postgres or MySQL and SQL to run queries against
Nice to have skills
- Knowledge of any AWS systems such as EC2, Lambda, RDS,
- Knowledge of API design patterns, REST, RPC, and can explain the advantages and disadvantages.
- Knowledge of DevOps skills such as Terraform, CI/CD,
JOB OPENING FOR MNC COMPANY
Job Description for Ruby on Rails Developer:-
Experience: 1 - 4 Years
Job Description:-
- 1 - 4 years of experience with Ruby and web development with Rails
- Experience with Test-Driven Development
- MySQL/PostgreSQL or other relational databases
- Experience with job processing queue (resque, etc.)
- Excellent communication and analytical skills
- Strong requirements gathering, analysis and questions skills
- Ability to contextualize a problem, and understand who the stakeholders are and how it fits in the system before diving into a problem
- Agile, Continuous Delivery and software release methodologies
- Bachelor’s degree or equivalent industry experience
- OS X or *nix Command Line Proficiency
- Ability to manage own work
Nice to have skills:
- Familiarity with OOP principles
- Elixir / Phoenix and familiarity with FP principles
- Docker, Kubernetes or other virtualization infrastructure
- Ability to manage a project
- Other: JavaScript, Rspec, Git, Redis, REST APIs, GraphQL, Domain-Driven Design
SleepyCat is India's First Mattress-In-A-Box brand! We deliver luxury mattresses, at a fraction of the usual cost, straight from our factory to your doorstep in an easy-to-carry package.
In sleepycat we constantly thrive to make our products and customer experience better using technology.
About Role
We are currently looking out for a Ruby on Rails developer who is motivated to learn and work on challenging projects. You should have a product mindset with great technical skills. In sleepycat we promote new and fresh ideas which can directly or indirectly help customer experience and sales. Sleepycat provides to you platform to bring your thoughts into action and implement them.
Technical skills required: Ruby on Rails
You should be willing to work as a full stack going forward.
Personal and Domain Growth Initiatives
1. In SleepyCat we promote career growth. Once you are settled and have completely owned the system you are hired for, you have the freedom to pick some other technologies inside SC. You will be given time to learn and contribute. Right now we have Web Development (PHP/JS), ReactJS and Ruby on Rails. So you have the freedom to utilize 30% of your time on any of these languages if you wish to and remaining 70% on your primary domain.
2. We also promote self-growth. You can utilize 10% of your time to learn any skill you want and we will help you with that. It is not restricted to the tech domain, could be anything from marketing to sales to personality development.
Interview Process Details
Technical Round 1: Development Knowledge Round
We will test your skills in 3 domains
- understanding an existing written code and ability to make changes
- coding a logical question to test basic coding skills
- ability to think of test cases to write a full proof code
Technical Round 2: Coding Round
45 minutes coding round where you will be required to code live sharing your screen. On the spot problem will be given.
Additional details
Website: https://sleepycat.in/
Work Culture: 6 days(All Saturday half day)
Office Location: 91Springboard, Kalina, Mumbai
Employee Strength: 40+ Employees
Founded: 2017
Funding: $1.6 Million
Read about Sleepycat and funding on Crunchbase: https://www.crunchbase.com/organization/sleepycat
Learn what employees say about SleepyCat on Glassdoor: https://tinyurl.com/r9oqfkl
Checkout what people say about SleepyCat products on Google: https://tinyurl.com/rco3nqr










