
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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Job Description
Ruby on Rails
The key aspects of this role:
· Design, build, and maintain scalable applications using Ruby
· Contribute to the entire implementation process including driving the definition of improvements based on business needs
· Act as a subject matter expert for Application Software developers and Engineers
· Handle server-side code for a production platform and contribute to new features.
To be the right fit, you'll need:
· Must have ROR as primary skill with good experience in server side scripting
· Must have used Ruby as scripting language & Rails as framework
· Good understanding & hands on experience on any frameworks in ruby : Watir, Capybera, Faraday
· Rest Web API development (Server & Client) experience will be an added advantage.
· Understanding of HTML/CSS/Angular JS will again an added advantage
· Good knowledge in DevOPS tools
· Experience to work in agile scrum model projects
Location: Pune, Hyderabad, Gandhinagar
PRIMARY RESPONSIBILITIES (include but are not limited to)
Implement new features using Ruby on Rails/ReactJS/MySql/AWS tech stack.
Learn our cloud-based application and our human business processes.
Reduce risk by identifying a portion of the application code that can modularized into its own
service; set up an API between that service and the main application.
We are looking for a highly skilled computer programmer who is comfortable with both front and back-end programming.
Full-stack developers are responsible for developing and designing front-end web architecture, ensuring the responsiveness of applications, and working alongside graphic designers for web design features, among other duties.
Full-stack developers will be required to see out a project from conception to the final product, requiring good organizational skills and attention to detail.
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.
- Degree in computer science.
- Strong organizational and project management skills.
- Proficiency with fundamental front-end languages such as HTML, CSS, and JavaScript.
- Familiarity with JavaScript frameworks React.js.
- Proficiency with Ruby on Rails
- Familiarity with database technology such as MySQL or Oracle or PostgreSQL.
- Excellent verbal communication skills.
- Good problem-solving skills.
- Attention to detail.
- 5 working days
- Flexible timings
- Work from home granted
- 3+ years of experience with Ruby On Rails.
- Strong Project & Time Management Skills, along with the ability to apply these skills while working independently, or as part of a team.
- Knowledge of blockchain technology, smart contracts and cryptocurrency will be an added advantage
- Experience in fintech domain will be another added advantage
- Bachelor’s degree in computer programming, computer science, or a related field.
- Fluency or understanding of specific languages, such as Java, PHP, or Python, and operating systems may be required.
We are looking for passionate engineers and researchers that want to contribute in this exciting and fast moving field of Deep Learning and Research.
- Designing, building, and maintaining efficient, reusable, and reliable Ruby and Rails code.
- Helping maintain code quality, organization and automation Identifying bottlenecks and bugs and devising solutions to these problems
- Ensuring Integration of data storage solutions (may include databases, key-value stores, blob stores, etc)
- Need immediate joiners
- B.Tech/ BE in Computer Science, Computer Engineering equivalent Good knowledge of ruby language
- Good knowledge of Rails Framework along with other common libraries such as RSpec and Resque
- Good knowledge of Mysql database Good knowledge of data structures, algorithms, oops
- Good technical knowledge of computer fundamentals
- Excellent knowledge of scrapers/ web spiders Expert-level object-oriented analysis and design skills
- Good understanding of the syntax of Ruby and its nuances
- Good understanding of server-side templating languages (such as Liquid, Slim, etc depending on your technology stack)
- Good understanding of server-side CSS preprocessors (such as Sass, based on project requirements)
- 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)
• 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.
Senior Ruby On Rails Developer
(Senior Product Engineer - ROR)
Experience - 3 to 6 years
Location - Pune
We are looking for an enthusiastic developer with a strong understanding of core Ruby 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 (http://jsonapi.org/">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
Optional Skills
- Knowledge in using Chef or Puppet
- Ability to do basic DevOps like setting up a Linux server.
- Websocket communication in Rails 5.
- Node.js
- JRuby
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Promobi Technologies:
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