
Full Stack Developer (Ruby on Rails, React.js, Next.js, AWS)


Full Stack Developer – SaaS Platforms (Ruby on Rails, React.js, Next.js, AWS)
Location: Office
Experience Level: 5+ Years
Employment Type: Full-Time
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✨ About the Role
We are looking for a skilled and passionate Full Stack Developer to join our SaaS Product Engineering team. You will work across backend and frontend technologies to build, optimize, and scale multiple SaaS products in a dynamic environment.
If you are excited by clean code, modern cloud-native practices, and the chance to contribute to impactful products from the ground up, we would love to meet you!
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🔥 Key Responsibilities
- Develop and maintain scalable SaaS-based platforms using Ruby on Rails (backend) and React.js / Next.js (frontend).
- Build RESTful APIs and integrate third-party services as needed.
- Collaborate with Product Managers, Designers, and QA teams to deliver high-quality product features for multiple projects.
- Write clean, secure, maintainable, and efficient code following best practices.
- Optimize applications for performance, scalability, maintainability, and security.
- Participate actively in code reviews, sprint planning, and team discussions.
- Support DevOps practices including CI/CD pipelines and cloud deployments on AWS.
- Take technical architectural level decisions for the products
- Continuously research and learn new technologies to enhance product performance.
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🛠️ Required Skills and Experience
- 3–6 years of hands-on software engineering experience, preferably with SaaS platforms.
- Strong Full Stack Development Skills:
- Backend: Ruby on Rails (6+ preferred)
- Frontend: React.js, Next.js (static generation and server-side rendering)
- Database: PostgreSQL, MongoDB, Redis
- Experience deploying applications to AWS cloud environment.
- Good understanding of APIs (RESTful and/or GraphQL) and third-party integrations.
- Familiarity with Docker and CI/CD pipelines (GitHub Actions, GitLab CI, etc.).
- Knowledge of security principles (OAuth2, API security best practices).
- Familiarity with Agile development methodologies (Scrum, Kanban).
- Experience in handling a team.
- Basic understanding of test-driven development (RSpec, Jest or similar frameworks).
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🎯 Preferred (Nice-to-Have)
- Exposure to AWS Lightsail, EC2, or Lambda.
- Experience with SaaS multi-tenant system design.
- Experience with third-party integrations like payments application.
- Previous work experience in startups or high-growth product companies.
- Basic knowledge of performance tuning and system optimization.
👤 Who You Are
- A problem solver with strong technical fundamentals.
- A self-motivated learner who enjoys working in collaborative environments.
- Someone who takes ownership and accountability for deliverables.
- A team player willing to mentor junior developers and contribute to team goals.
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📈 What We Offer
- Opportunity to work on innovative, impactful SaaS products.
- A collaborative and transparent work culture.
- Growth and learning opportunities across technologies and domains.
- Competitive compensation and benefits.

About Invensis Technologies Pvt
About
Invensis Technologies is a leading IT-BPO service provider has been empowering clients around the world to achieve business transformation and growth through its services that boost process and operational efficiencies. We have been operating since 2000 with an office in Wilmington, DE, USA, and delivery centers in Bangalore, Hyderabad and Rajahmundry, India.
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Candid answers by the company
Address: 1321, 100 Feet Ring Rd, Sarakki Extension, next to honda show room, Marenahalli, 2nd Phase, J. P. Nagar, Bengaluru, Karnataka 560078
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Schedule:
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- total work: 4+ year (Preferred)
- software development: 4+ year (Preferred)
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Responsibilities-
- Participating in design discussions, documentation, and development with the team as needed.
- Working closely with the product manager for deliverables and milestones identification.
- Reporting to technical lead/manager on daily activities planned, expected deliverables, and reports as defined for the project.
- Participating in requirement gatherings as required.
Requirements-
- At least 3 years of proven experience of working as a software developer, out of which at least 2 years must be spent in a solid back end role
- Be able to write clean, maintainable code which others can work on
- Familiarity with RDBMS (MySQL, PostgreSQL) and NoSQL (MongoDB) databases, web servers (e.g. Apache) and UI/UX design
- Experience in taking a problem to a product solution (module/product) from scratch - a proven record of shipping on time and budget
- You've worked with startups before and understand the fast-paced, dynamic nature of work
- People with high attention to detail, flexible and focused on solutions, organized and self-sufficient, prioritize learning and growth and will enjoy working with a team usually tend to excel in this role


About Us:
Avarna derived from Sanskrit means one with a fun loving nature but having no form, no color, or marks. We at Avarna Capital solve the most interesting questions in sports analytics. Diligence, productivity and transparency defines the work culture at Avarna. We are a team of
highly motivated and innovative people all working remotely so emphasis on communication, accessibility, and accountability are our key focus to build a strong culture at Avarna.
Resposibilities:
1. Migration of company's current infrastructure from Monolithic to Microservices
2. Recommeded appropriate solutions to enhance the current software stack
3. Utlizing the latest and most innovating technology in solving business problems
4. Take ownership of project delivery and entire SDLC


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.
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Requirements
- Degree in computer science.
- Experience with ( React+Node ) Or ( react + Angular) Or ( Node + Angular)
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- Familiarity with JavaScript frameworks
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- Excellent verbal communication skills.
- Good problem-solving skills.
- Attention to detail.


2. Integrating back-end services with Angular/Node.js based front end needs


This person MUST have:
- BE Computer Science, MCA or equivalent
- Cloud app development experience
- Strong Django and ReactJS experience
- Advanced knowledge of Python and relational databases
- Understanding of APIs, pagination, searching, sorting
- Experience with building, modifying and extending API endpoints (REST or
GraphQL) for data retrieval and persistence.
- Creating high performance UI etc.
- Experience with SQL and NOSQL databases
- Experience with the full software development life cycle, including requirements
collection, design, implementation, testing, and operational support.
- Experience with scrum or other agile software development methodology.
- Excellent verbal and written communication, teamwork, decision making and
influencing skills.
Experience:
- Min 3 year experience
- Not more than 15 year experience.
- Startup experience is a must.
Location
- Remotely, anywhere in India
Timings:
- 40 hours a week but with 4 hours a day overlapping with client timezone. Typically clients are in California PST Timezone.
Position:
- Full time/Direct
- We have great benefits such as PF, medical insurance, 12 annual company holidays, 12 PTO leaves per year, annual increments, Diwali bonus, spot bonuses and other incentives etc.
- We dont believe in locking in people with large notice periods. You will stay here because you love the company. We have only a 15 days notice period.


Responsibilities:
● A Bachelor's degree in Engineering or related field
● Proficiency with fundamental front end languages such as HTML, CSS and JavaScript.
● Familiarity with JavaScript frameworks preferably React.
● Proficiency with server side languages such as Python(Django).
● Familiarity with database technology such as MySQL and MongoDB.
● Familiarity with Cloud Technologies such as AWS.
Preferred Qualities:
● Persistent problem solver & Burning curiosity
● Responsible and Never give up attitude
● Attention to detail & Graphic Designing sense would be appreciated.
● Sense of Discipline & Meets deadlines religiously
Perks and Privileges:
● Hypergrowth Startup culture true of the Silicon valley etiquettes
● Monthly outings and Team building exercises.
● Free Subscription of any upskilling platform/course/masterclass of your choice
● Every month one book of your choice will be delivered to you.
● Food and Beer is on us


Full Stack Engineer
Front End Technology:
- Minimum 2+ years’ experience in working web development technologies
- Experience writing modular/reusable code and using modern JS frameworks / libraries like
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- Strong expertise with HTML5, CSS, and writing cross-browser compatible code.
. Experience with Responsive Frameworks like Bootstrap / Flex.
- Strong knowledge of Object-Oriented Design concepts.
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- Have extensive experience in designing a backend stack of the product
- Strong understanding of Data Structures / Algorithms.
- Minimum of 2+ years of experience in Writing Backend Microservices in Node
JS/Python
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needs of our customers and partners.
- Designing overall architecture of the web/ mobile application
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Employment Type
Full-time
Job Functions:
- Engineering
- Information Technology
Skills
- Object-Oriented Programming (OOP)
- JavaScript
- Data Structures
- Front-end Development
- Algorithms
- React js
- Express js
- Swagger
- Github
Qualifications
- Experience in building scalable systems.
- Exposure in building and using reusable code and libraries.
- Candidates should proactively keep their knowledge and skills up to date.
- Candidates should be able to work in a fast-paced environment independently and as part of a team.
- Candidates should be able to work in a highly collaborative environment with excellent communication skills.
Other Skills:
- Excellent written and verbal communication skills.
- Ability to work in a dynamic, fast-moving, and growing environment.
- Critical thinker and problem-solving skills. Should be able to strategize immediately.
- Strong knowledge of web application architectures, trends, and emerging technologies.

As engineeing lead, you would be responsible for driving day to day development activities including coordination with customers and project management team in US. You are expected to be hands-on with the technology stacks we work with so you can contribute as a developer across projects on need basis.
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- Lead the engineering effort across projects
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- Design and build modern solutions informed by a deep understanding of cloud architecture and how distributed systems operate at scale
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- Establish and enforce best development and engineering practices including QA and DevOps
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