
Key Responsibilities
1. Architect & Design
- ○ Define and maintain service architecture in Go and Node.js, ensuring scalability, resilience, and low latency.
- Lead the creation and upkeep of comprehensive Entity-Relationship Diagrams (ERDs) and maintain an up-to-date data model library.
2. Team Leadership & Mentorship
- Manage, mentor, and inspire a diverse team of 5–10 backend engineers (“maverick” talent), fostering collaboration, autonomy, and ownership.
- Conduct regular code reviews, design discussions, and performance feedback sessions.
3. AI/ML Integration
- Collaborate with Data Science and ML engineers to integrate OpenAI models (e.g., GPT-4) for features like smart audio transcription, summarization, and recommendation.
- Work with DataStax (Cassandra) or similar NoSQL systems to power low-latency user analytics and AI inference pipelines.
4. Delivery & Quality
- Establish and enforce best practices for CI/CD, automated testing, performance benchmarking, and observability (metrics, logs, tracing).
- Own SLA/SLOs and incident response processes, driving rapid root-cause analysis and post-mortems.
5. Cross-Functional Collaboration
- Partner with Product, UX, and DevOps to translate business goals into technical roadmaps and deliver on tight timelines.
- Evangelize backend and data architecture decisions across the engineering organization.
Must-Have Qualifications
● Technical Expertise:
- 6+ years backend experience with Go and Node.js, building microservices in production.
- Deep understanding of RESTful APIs, gRPC, message queues (Kafka/RabbitMQ), and event-driven architectures.
- Data Modeling:
- Proven ability to author and maintain ERD documents, relational and NoSQL schema design (PostgreSQL, DataStax Cassandra).
● Team Leadership:
- 2+ years managing high-performance engineering teams, with a track record of growing and mentoring “maverick” engineers.
● AI/ML Integration:
- Hands-on experience integrating AI/ML models, preferably OpenAI APIs or
- custom ML pipelines, into backend systems
● Operational Excellence:
- Strong background in designing CI/CD pipelines (Jenkins/GitHub Actions), containerization (Docker/Kubernetes), and cloud services (AWS/GCP).
Nice-to-Have
● Experience with GraphQL or real-time streaming architectures (WebSockets).
● Familiarity with large-language‐model fine-tuning and hosting on infrastructure like AWS SageMaker or Azure ML.
● Background in user-centric analytics and personalization algorithms.
● Open source contributions in Go or Node.js ecosystems.
What We Offer
● Competitive salary with performance bonuses and equity options.
● Flexible work hours and hybrid work policy.
● Generous learning & development budget for conferences, courses, and certifications.
● A culture that values creativity, ownership, and rapid experimentation.
● Opportunity to shape the future of audio social in India’s biggest emerging markets.

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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
- 3+ year of experience in Development in JAVA technology.
- Strong Java Basics
- SpringBoot or Spring MVC
- Hands on experience on Relationl Databases (SQL query or Hibernate) + Mongo (JSON parsing)
- Proficient in REST API development
- Messaging Queue (RabitMQ or Kafka)
- Microservices
- Any Caching Mechanism
- Good at problem solving
Good to Have Skills:
- 3+ years of experience in using Java/J2EE tech stacks
- Good understanding of data structures and algorithms.
- Excellent analytical and problem solving skills.
- Ability to work in a fast paced internet start-up environment.
- Experience in technical mentorship/coaching is highly desirable.
- Understanding of AI/ML algorithms is a plus.
- Hands-on development and optimization of image enhancing algorithms for image processing using computational imaging
- Working with peer teams on researching and resolving complex software and system problems
- Analvze and optimize different methodologies to improve output of image processing
- Work closely with Quality Assurance teams to refine algorithms for optimal system performance
- Support products from the early development and prototyping phases through to production
- Developing functional specifications per customer requirements
- Good understanding of image processing techniques such as edge detection skills, image alignment, removing noise, image segmentation, correction/modification, compression, and image reconstruction
The B2B manufacturing industry has a lack of digitisation globally. NowPurchase is building layers of technology to help improve the productivity and profits of the manufacturer. For this we are building the OS (Operating System) that will seamlessly connect factory equipment such as furnaces and spectrometers to our software systems that provide real time optimisations.
The end-game is to use this interconnected system to do great production planning and autonomous procurement of their raw materials. The Heart of NowPurchase will be a marketplace consisting of these smart factories and raw material suppliers.
Here a video that explains our product journey:
[https://www.loom.com/share/ccd0ed9e7bc349d7bba851d762253c21](https://www.loom.com/share/ccd0ed9e7bc349d7bba851d762253c21)
**Role Description**
NowPurchase is looking to add an immensely talented Backend Developer that will help us invent, design, refine and deliver products that will meet the above vision.
- Expect to build a lot of services and APIs in the cloud and stand-alone IoT devices to serve both the browser as well as native IoT enabled terminals that will be placed at the manufacturers' premises.
- Expect designing algorithms that model the metallurgy of the manufacturing processes as well as using tools such as linear programming, machine learning etc.
**What are the expectations from this role?**
- Deliver high quality modular code deployed to serve web, mobile and native IoT enabled terminals that leverage REST-based services and real time sockets. This would include algorithms for real time optimizations that are critical for the manufacturing process.
- You are empowered to work directly with leadership and the product team to make decisions about your code and future of the product.
- Have a strong emphasis on shipping features quickly without sacrificing code quality. Be ready to build a lot of MVPs that will go through iteration or be completely scrapped depending on the outcome at the customer end.
- Own your Agile projects and responsible for software design to implementation and deployment. Maintain sprints, delivery timelines and contribute to better managing the engineering team.
- Collaborate on the end to end design and implementation of the platform, including data modeling, systems architecture, data security, access controls, architecture, user experience, deployment, automation, and monitoring.
- Maintain a high level of data integrity, quality and security checks.
- Develop data pipelines and RESTful services that are distributed, robust and highly performant.
- Build a culture of simplicity and pragmatism, which is reflected in your elegant code that other developers emulate and you ensure through thorough code reviews and processes.
**Qualifications and Experience**
- 1+ years of demonstrated software engineering experience in an agile environment designing, architecting and implementing robust scalable systems preferably for modern SaaS application
- Experience with modern server-side programming languages such as Python, Scala, Go. Experience with web frameworks such as Django Rest Framework, Flask.
- Experience with architecting asynchronous services with design patters leveraging PostgreSQL, MongoDB, Redis, Celery for storage and multi-tenant servers over AWS Elastic BeanStalk.
**Compensation & Benefits**
- **Cash Compensation:** As per industry standards & pedigree of candidate
- **ESOPs:** 10% of NowPurchase is dedicated to current & future team members. Your package would entail some ESOPs so that you own a part of the company and grow along with it.
- **Medical Insurance:** Benefits of group insurance of 3 lakhs for family including parents, spouse, children
- **Generous leave structure and WFHs** including Marriage, Maternity & Paternity leaves
- **Complete Relocation Expenses:** We are building a unicorn out of the city of Joy (Kolkata). We will pay for everything you spend to relocate here.
**Possible Growth path**
Backend Developer > Senior Backend End Engineer > Engineering Manager > VP of Engineering
## **Tech Stack**
- React/Redux
- Python/Django/Celery
- Git, AWS, ELB (Elastic Beanstalk), Netlify
- PostgreSQL/Redis/S3
**Hiring Process**
1. Screening of applicants & initial telephonic call with Manager -HR
2. F2F/Video Interview with Engineering Manager and Cofounder CTO
3. Take home written assessment
4. F2F/Video Interview with Cofounder CEO
5. Email communication on final feedback
The end to end process shall take less than 10 days. We pride ourselves on being transparent & moving fast.
*Candidates who accept an offer may join within 1 hour, 1 week or up to 45days of signing - though, we have a preference for as short a gap period between signing and joining since we're at the most exciting part of our journey - laying the foundation for the NowPurchase platform!*
Requirements:
- Should have work experience in design, development, Code, and Unit Test web and desktop-based applications written in. Net framework starting from 4 x and above.
- Should have a good understanding of web servers such as IIS and Front-end such as HTML's and Razor based engines.
- Strong coding experience and thorough understanding of programming languages such as C#, VB. NET, ASP. Net, ADO. Net, jQuery, JavaScript, Traditional Web Services, WPF, Web API, and other Scripting languages such as pythons.
- Must have exp. into WPF and C#
Responsibilities:
Developing and maintaining all server-side network components.
Ensuring optimal performance of the central database and responsiveness to front-end
requests.
Collaborating with front-end developers on the integration of elements.
Designing customer-facing UI and back-end services for various business processes.
Developing high-performance applications by writing testable, reusable, and efficient code.
Implementing effective security protocols, data protection measures, and storage solutions.
Running diagnostic tests, repairing defects, and providing technical support.
Documenting Node.js processes, Typescript processes including database schemas, as well as
preparing reports.
Recommending and implementing improvements to processes and technologies.
Keeping informed of advancements in the field of Typescript and Node.js development.
Skills:
Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.
2-4 years of strong proficiency in Node.js and Typescript. And core principles of javascript.
Experience in test-driven development.
Experience working with SQL based DBs, REST API.
Strong interpersonal, communication, and collaboration skills.
Exceptional analytical and problem-solving aptitude.
Knowledge about the Software Development Life Cycle Model, development best practices
and standards, source control, code review, build and deployment, continuous integration.
Skills:
- Experienced in C# MVC ASP.Net, Net
- Should have good knowledge in JavaScript, SQL, RDBMS Concepts and Microsoft .NET
- Framework, practical implementation of Object Oriented Concepts, N-Tier Architecture
- Development and understanding of JSON, XML, SOAP.
- Good hands-on coding skills in Java Script, Ajax, C#, ASP.Net, ADO.Net, jQuery.
- Knowledge of working Android iOS mobile development would be added advantage
- Good communication and analytical skills are must.
- Candidates with experience will be preferred.
Primary Roles and Responsibilities:
- Participate in requirements analysis.
- Collaborate with internal teams to develop software design and architecture.
- Candidate should be able to write clean, scalable code using C#.
- Revise, update, refactor and debug code.
- Test and deploy applications.
- Resourcefulness and troubleshooting.
- Good analytical and problem solving skills.
- At least 4 years of experience programming in Python.
- Develop application code and modules for business and technical requirements.
- Tune up design for maintainability, scalability and efficiency.
- Resolve and troubleshoot problems and complex issues.
- Perform unit tests and fix bugs.
- Integrate best qualitative practices in design and development aspects of programs.
- Ability to mentor subordinates.
- Excellent communication skills.











