
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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Good to have knowledge of AWS, prometheus, kubernetes and other monitoring tools.
Min exp 1 year. Must be from Pune since we are not able to provide relocation.
● 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
• BE/B. Tech. Computer Science or MCA from a reputed University.
• 8+ Years of experience in software development, with emphasis on JAVA/J2EE Server side
programming.
• Hands on experience in Core Java, Multithreading, RMI, Socket programing, JDBC, NIO,
webservices and Design patterns.
• Should have Knowledge of distributed system, distributed caching, messaging frameworks, ESB
etc.
• Knowledge of Linux operating system and PostgreSQL/MySQL/MongoDB/Cassandra database is
essential.
• Additionally, knowledge of HBase, Hadoop and Hive are desirable.
• Familiarity with message queue systems and AMQP and Kafka is desirable.
• Should have experience as a participant in Agile methodologies.
• Should have excellent written and verbal communication skills and presentation skills.
• This is not a Fullstack requirement, we are purely looking out for Backend resources.
THE POSITION:
- 3+ years of relevant experience in designing & implementing scalable, resilient backend microservices
- Expert at any backend programming language (Python/GoLang preferrable) and has exposure to API design and scalable architecture
- Hands-on experience on a couple of RDBMS/NoSQL/In-memory DBs
- Great database modelling skills
- Ability to choose the right algorithm, data-structure, and design pattern for the given problem statement
- Knowledge of any cloud based platform like AWS or GCP and scaling on the go
- Understanding of various application security principles and experience with building applications secure by design
QUALIFICATION:
- We don't care about which college you are from, if you have the power to convert coffee into code, we got you.
This is a temporary full time/freelancer role.
Requirements:
- - Write well designed, testable code in popular Javascript frameworks like React, Angular etc. and Ruby/Ruby on Rails.
- A good exposure to both SQL and NoSQL database architectures. - - Ability to write well documented and testable scripts to automate some processes, preferably using Javascript and/or Ruby.
- - A strong problem solving mindset.
- - Excellent oral and written communication skills.
- Ability to work collaboratively in teams, with a self-starting, entrepreneurial and ownership mindset. - - Experience working on Open Source projects is a big plus
Responsibilities:
- - You will be responsible to work on key issues for one of our dashboard platforms, and collaborate with other developers and the product team to drive the product development forward.
- - You will be expected to take ownership of the work you do, and the dashboard platform that you will be working on.
- - You will be also responsible to train future developers on the platform you'll be working on, once they join your team.
- - At times you will be required to communicate and collaborate with our dashboard implementation partners on a technical front, to discuss roadblocks, potential future roadmaps and improvements, along with our engineering and product teams.
- - You will be required to attend weekly cadences with the team to discuss updates and future goals, brainstorm on some problems and give key updates on deliverables on behalf of the team you'll be working with.
Opportunity in our Product Team?
Our system has over 4 products & 12 modules designed by product managers working with banking & finance experts. The company’s growth from here is based on a multi-product strategy. The way we’re scaling our product team is in-line with the company’s strategy.
Your customers are the CFOs & Finance Teams in mid to large scale enterprise businesses and you will build these products to solve the problems faced by them.
You’ll become familiar with all parts of our stack from end to end. You’ll design and implement features to be scalable and resilient by working with both our infrastructure engineers and our product engineers. You’ll be a driver for positive change to Finly’s engineering culture, processes and technology.
Here are some examples of the projects in the different products:
Payment automation by building a deep integration with multiple banking systems:
- Governance frameworks with policy controlled workflows.
- Core finance document management system.
- Automating reconciliation of transactions across business
- Collaboration tools among finance, vendors & employees.
- Continuous ETL for integrating with CRMs like Salesforce & Accounting Systems like SAP.
WITHIN 1 MONTH, YOU'LL
- Complete Finly’s new-hire training week, and learn Accounts Payable
- Processes & the various partners we work with to make Finly happen.
- Investigate, solve and release a bug fix to production. In order to do this you will ramp up on Finly’s engineering stack by pair-programming with your teammates and attending engineering training sessions designed and presented by the team.
- Meet with cross-functional peers around the company to learn how the product functions.
- Complete your engineering starter project and deploy your first changes to production.
WITHIN 3 MONTHS, YOU'LL
- Individually contribute reliably ship full features to customers.
- Own major product areas and take features from mock to deploy.
- Estimate technical scope and time to complete major features and initiatives.
WITHIN 6 MONTHS, YOU'LL
- Move to new product vertical & initiative and start designing and architecting scalable systems as per the requirements discussed with Product Manager.
- Have made a visible impact on the product for all the users of Finly.
- Work closely with your team to remove roadblocks, educate on best practices and improve how we work.
- Be comfortable navigating most of our stack and infrastructure
- Be responsible for the planning, scoping, design, and implementation of new features
- Participate in interviewing and hiring, as a way to influence team growth and how our values inform our culture
WITHIN 12 MONTHS, YOU'LL
- Individually contribute and lead teams to reliably ship full features to customers.
- Estimate technical scope and time to complete major products and initiatives.
- Define tools and standards for product engineering to measure performance impact of releases
- Help grow other engineers technically by mentoring, pairing and developing other learning opportunities
- Collaborate with engineering and product leadership to define priorities and set delivery goals.
So in this role, you will work with the respective team’s product manager and other engineers in that team. You may work on the front-end or backend or both based on the requirement of the project.
Join us & have the authority and responsibility to make things happen!
As an experienced engineer we know that you have built software to solve various business problems at your previous workplaces. You may have also explored technologies on your own for your learning or hobby projects.
- You will be building APIs for the Synup platform and also UI to make our platform capabilities available to our customers.
- You and the team that you are a part of will be collectively responsible building performant software and customer experiences that scale to our next million customers.
- You will be responsible for writing technical specs and contributing to it's implementation. We expect that you would have done the same in your previous workplaces.
- Other folks on our team are looking forward to learn from your experiences.
For engineers that join our team
- We expect you to be good with Ruby or Python to build APIs.
- You will be contributing to our UI that is built with React and GraphQL.
- We hope our team members have a strong grasp of software design patterns and know when to put them to good use.
- Experience with an SQL datastore would help a lot. PostgreSQL is our primary datastore.
- We optimize our search functionality and rollup reports by using ElasticSearch
- We expect that you have used Redis. Redis is our swiss army knife to solve a lot of problems apart from just caching.
We are building consumer internet space, payment processing, e-commerce and/or enterprise. SAAS products. Undergraduate (or higher) degree in computer science/engineering. You have an excellent grasp over theoretical and applied computer science.
Job Description
Responsibilities You can take responsibility of large sized projects. You can take full responsibility of one or more core modules and/or technical verticals / libraries / frameworks / components. This will include design and architecture, evaluating and deciding which framework/language/data store/tools to us, preparing roadmaps and timely delivery. You understand the business impact of your decisions. You will review code and ensure that implementations are testable, performant, scalable, documented and secure. You will work closely with product, design, revenue, platform and growth teams. You can take responsibility of large sized projects involving inter-departmental stakeholders. You can take full responsibility of one or more core modules and/or technical verticals / libraries / frameworks / components. Payment processing framework capable of supporting multiple payment methods (cards, netbanking, UPI, wallets, etc.) with one or more payment method supported across multiple payment gateways. This will include design and architecture, evaluating and deciding which framework/language/data store/tools to us, preparing roadmaps and timely delivery. You will drive engineering best practices, recruit other engineers, lead and manage teams, conduct performance reviews and mentor other engineers. You will review code and ensure that implementations are testable, performant, scalable, documented and secure. You will work closely with product, design, revenue, platform and growth teams.
Requirements 3-5 Years of Experience in software engineering.
5-10 years of industry experience in software engineering building consumer internet space, payment processing, e-commerce and/or enterprise SAAS products. Bachelor's Degree in Computer Science or related field, or 3+ years relevant work experience. Undergraduate (or higher) degree in computer science/engineering. You have an excellent grasp over theoretical and applied computer science. You have excellent problem solving and analytical skills. You should be able to identify systemic issues, performance bottlenecks and design/architect improvements. Experience with working on PCI compliant infrastructure. You should be able to build at this engineering level Store builder (products with multi-level variants (colour, size, etc.), SKUs, discounts) and shopping cart. Highly concurrent double entry accounting system. You have excellent problem solving and analytical skills. You should be able to identify systemic issues, performance bottlenecks and design/architect improvements. Good hold on data structures and algorithms. Strong object-oriented design skills, and an uncanny ability to design intuitive modules and class-level interface.
Desired Skills and Experience Python, Golang, Java, Ruby on Rails, Django








