Ruby on Rails Developer

We like to keep our job descriptions super simple, so please spend 3 minutes reading this.

Details about the job. You will ...

• Work very closely with the Head of Engineering and the CEO directly
• Own major parts of our tech stack (Node.js/React.js) and your job will be focused primarily on backend (Node/SQL/MQs etc.), but with some front-end JS work (React) as needed
• Design, code, and deliver top-quality software that performs beautifully at scale
• Take ownership for your job and treat it like it is your baby
• This job is based in Chennai (NOT Remote). But we have a lot of flexibility for when life situations require you to work from home
• We are only a 40 person company (by choice) - so you will get amazing ownership!

A Bit About You.

• Really strong in Javascript especially in Node.js with at least 5 years of experience - if you are genuinely not super strong, please do not apply as you will find our interviews challenging and it might be a waste of your time
• Also has React.js experience so that you can support the front-end work as needed
• A strong Engineer who LIKES building software - not just someone who knows the frameworks and can code
• We don't care about college degrees or if you are self taught - we only care that you're exceptional in your work and can be professional
• Must have strong communication skills
• Must be organized, and deliver their own work within deadlines, professionally
• Strong sense of ownership and take pride in your work.

What Will We Do For You?

• Office next to the beach
• "Sports team with a heart" mentality. Even though we work hard, we take care of our people.
• Free breakfast and snacks every day
• Non-hierarchical work environment
• Macbook Pro, free swag etc. of course!
• Huge potential for career growth - the limiting factor will be just your commitment and ambition.

How to apply

• Send an email to jobs AT knownuggets.com with the subject line as "Senior Backend Engineer role"
• In the email include your answer (not AI written) on (1) why you think Node.js is amazing, and (2) what you would NOT use Node.js for

Tech Stack

Frontend: React.js, TypeScript, Next.js, React Native, Redux, GraphQL, Tailwind CSS

Backend & Infra: Java (Spring Boot), Microservices, AWS ECS, Redis, ScyllaDB, MongoDB,

GraphQL, AWS Lambda, MySQL, Aurora

Event Driven & AI: SQS, Kinesis, Claude, Cursor, LangChain

Observability: Prometheus, Grafana, CloudWatch, Sentry

Engineering Excellence: JVM tuning, GC profiling, Circuit Breakers, Async Tracing

We’re hiring an experienced Full Stack Engineer (React + Java) with 5–10 years of

experience to design, build, and scale real-time web applications for our global B2B

hotel marketplace.

You’ll work across the stack—from building intuitive, data-driven UIs to

high-performance backend services that power our distribution engine.

Responsibilities

● Build and maintain end-to-end features spanning React.js frontends and Java

(Spring Boot) microservices and database integrations .

● Develop responsive, performant, and accessible UIs integrated with REST

and GraphQL APIs.

● Design and scale low-latency, high-throughput microservices for real-time

data workflows.

● Implement event-driven systems using Kafka or SQS for asynchronous

communication.

● Collaborate closely with Product, Design, and Architecture teams to translate

business requirements into scalable technical solutions.

● Optimize application performance via caching strategies, async processing,

and database tuning.

● Implement and maintain CI/CD pipelines, test automation, and monitoring

frameworks.

● Leverage AI-assisted tools (Claude, Cursor, etc.) to boost velocity and maintain

code quality.

● Participate in code reviews, design discussions, and architecture decisions.

● Write clean, maintainable code, follow design patterns, maintain high test

coverage, and document key technical decisions.

Requirements

● 6–10 years of full stack development experience with a proven track record in

production systems.

● Strong proficiency in React.js, JavaScript/TypeScript, Redux (or similar state

management) and modern frontend frameworks.

● Solid backend experience with Java, Spring Boot, and Hibernate.

● Database experience with MySQL, MongoDB, or ScyllaDB.

● Hands-on with microservices, AWS (ECS/Lambda), SQS, and GraphQL.

● Familiarity with event-driven architectures and caching layers (Redis) and

asynchronous processing.

● Working knowledge of observability tools (Prometheus, Grafana, CloudWatch,

Sentry).

● Understanding of data structures, algorithms, and system design

fundamentals.

● Passion for clean code, testability, and engineering excellence.

● Strong analytical and communication skills with the ability to collaborate across

Product, Design, and QA teams.

● Comfortable in a remote-first, asynchronous, and ownership-driven culture.

Nice to Have

● Experience with React Native or mobile web frameworks.

● Exposure to Kafka, Kinesis, or other event-streaming platforms.

● Familiarity with CI/CD (GitHub Actions, Docker) and container orchestration

(ECS).

● Experience with AI-assisted development, LLMs, or LangChain pipelines.

● Domain exposure to B2B platforms, travel-tech, or high-scale marketplaces.

● Background in Test-Driven Development (TDD) or Agile methodologies.

Why Join Us?

● Work on mission-critical, high-scale systems used by global hotel brands.

● Build real-time, low-latency products impacting millions of hotel transactions

daily.

● Be part of a remote-first, AI-accelerated engineering culture that values

autonomy and quality.

● Collaborate with senior engineers and architects solving complex distributed

system challenges.

● Competitive compensation with equity participation and career growth

opportunities.

● Learn and work with cutting-edge AI tools—from code generation to

observability automation.

Candidates MUST HAVE :

● Deep expertise with JavaScript. Extensive hands-on experience building microservices using NodeJs.

● Substantial experience in building complex and scalable solutions.

● Strong computer science fundamentals: data structures, algorithms, design patterns

● Strong experience and understanding of various APIS / Web Services and SQL/NoSQL databases

● Architected non-trivial solutions for a company at a scale

● Proficient in unit testing, writing mocks, automated functional tests, and end-end tests

● Experience with a variety of languages, stacks, and programming paradigms

● Capability to contribute across the web and mobile stacks

● Strong desire to drive change, and ability to adapt to change quickly

● The ability to independently lead problem-solving and build elegant, maintainable solutions to complex problems.

Good to Have

● Experience in building projects with TypeScript, ExpressJs, NextJS, ReactJs, Flutte,r etc.

● Experience with gRPC or GraphQL API implementations.

● Experience in any other programming languages such as Python/Go/Scala

● Experience with Kubernetes, Docker and

● Understanding the nature of asynchronous programming and its quirks and workarounds

● Good hand-on with data streaming technologies like Kafka

● Experience with cloud APIs (e.g., GCP, AWS, Azure)

● Understanding on information security and data privacy

● Experience in open-source development and contribution to open-source technology

Roles and Responsibilities :

● Write clean, reliable, reusable, scalable, testable and maintainable code.

● Produce best in class documentation, testing and monitoring

● Estimate effort, identify risks

● Mentor/coach other engineers in the team to facilitate their development and to provide technical leadership to them.

● Rise above details as and when needed to spot broader issues/trends and implications for the product/team as a whole

● Practice and promote craftsmanship in software engineering (coding, testing, code reviews, documentation, scalability, performance, etc.)

● Break down requirements, estimate tasks, and assist in planning roadmap accurately

● Develop iterative solutions to address expansive product goals

● Platformism components as libraries, utilities and promote reuse

● Be able to conceptualize and develop prototypes quickly

● Own large technical deliverables and execute in a structured manner.

● Take accountability for the overall health of the products you build and ensure predictability of the deliverables of your team 1

● Drive technical roadmap of the team in collaboration with Product and Business Teams.

About the Role: We’re looking for a Full-Stack Developer who is comfortable working across both web and mobile platforms to join our growing tech team. You will be responsible for developing user-facing applications, building scalable backend services, and deploying high-quality digital experiences that impact real users. This is an exciting opportunity to work in a dynamic startup environment, where you’ll play a critical role in shaping both product and technology. You’ll collaborate closely with our design, backend, and product teams to develop and maintain new features across our platforms. We’re not just looking for a coder - we’re looking for someone passionate about solving problems, learning fast, and building user-first experiences across devices.

Responsibilities: Web Development Develop responsive web interfaces using React.js, JavaScript, HTML, and CSS. Optimize frontend performance for mobile and desktop platforms. Work closely with UI/UX designers to implement intuitive user experiences. Mobile App Development Build and maintain cross-platform mobile apps using React Native (or Flutter, if applicable). Ensure smooth user experience and performance across Android and iOS devices. Manage versioning, updates, and publishing to Play Store and App Store. Backend Development Develop and maintain backend APIs using Node.js and Express.js. Integrate with MongoDB / MySQL databases for data persistence. Work with third-party APIs and handle authentication, authorization, etc. DevOps & Deployment Handle app deployment pipelines and basic CI/CD workflows. Monitor, debug, and resolve production issues. Use Git and version control best practices for code collaboration.

Bonus Skills (Nice to Have): Experience with TypeScript, Firebase, AWS, or Expo Familiarity with push notifications, in-app purchases, etc. Basic knowledge of server-side rendering or Next.js Experience with analytics, performance monitoring, or testing frameworks

AI/ML Development: Build models using open-source frameworks (e.g., PyTorch, TensorFlow). ● Zero-Cost Full-Stack Engineering: Build across the stack using cost-free tools and infrastructure. ● Security & Auth: Implement secure authentication/authorization systems using free solutions. ● AI-Augmented Coding: Utilize tools like GitHub Copilot, Cody, and Workik to 10x productivity. ● UI/UX Focus: Build clean, engaging, and fast interfaces. ● Rapid Iteration: Ship MVPs, test quickly, and improve constantly. ● Lean Infrastructure: Avoid paid services; build with open-source and free-tier tools. 

Job : Full Stack Developer

Location:Hyderabad

Mode:Hybrid

Experience : 4 +

Skills: React Js, Node Js, Javascript, AWS

We are seeking a talented Full Stack Developer to join our dynamic team. The ideal candidate should

have a strong background in Node.js, React.js, AWS, and proficient skills in JavaScript. As a Full

Stack Developer, you will be responsible for designing, developing, and maintaining web applications

throughout the entire software development lifecycle. Your expertise will contribute to the creation of

innovative solutions that enhance user experience and drive business growth.

Responsibilities:

● Collaborate with cross-functional teams to define, design, and ship new features.

● Develop server-side logic using Node.js, ensuring high performance and responsiveness to

requests from front-end components.

● Build reusable and efficient front-end components using React.js.

● Implement and maintain API integrations with third-party services.

● Optimize applications for maximum speed and scalability.

● Collaborate with other team members and stakeholders to troubleshoot, debug, and optimize

application performance.

● Stay up-to-date with emerging technologies and industry trends to ensure the best practices

are consistently applied.

● Implement security and data protection measures.

● Participate in code reviews and provide constructive feedback to team members.

● Deploy applications on AWS and manage cloud infrastructure.

Description:

● 5+ years of overall experience with 3 years of exp in React.js,Node.js

● Bachelor's degree in Computer Science, Engineering, or a related field.

● Proven experience as a Full Stack Developer or similar role.

● Strong proficiency in JavaScript and its modern frameworks (Node.js, React.js).

● Experience with AWS services and cloud infrastructure.

● Familiarity with front-end technologies such as HTML, CSS, and JavaScript

frameworks/libraries.

● Recommended Experience: Proficiency in Node.js, Typescript, React, and MongoDB.

● Knowledge of database systems (SQL, NoSQL)

● Experience with user interface design.

● Knowledge of performance testing frameworks including Mocha and Jest.

● Experience with browser-based debugging and performance testing

● Excellent problem-solving and communication skills.

● Ability to work both independently and collaboratively in a team environment.

How to Apply:

If you have a passion for backend development, possess the required experience, and are excited

about contributing to innovative projects, we invite you to apply. Please submit your resume, cover

letter, and any relevant portfolio or project samples to Anusha Kalidindi

P99soft is an equal opportunity employer, dedicated to fostering diversity and creating an inclusive

workplace for all employees.

- Experience with front-end technologies such as Angular or React with Redux. 

- Experience working in NodeJS with Express 

- Experience with PHP development using any one of it's framework will be considered as    a value add 

- Experience working with SQL or NoSQL databases, the ability to write efficient queries        and benchmark/profile them 

- Mastery of object oriented JavaScript, ES6, HTML, and CSS/SASS/StyledComponents 

- Experience in RESTful API development 

- Strong understanding of asynchronous programming 

- Experience with performance debugging and benchmarking 

- Experience with testing frameworks like Karma, mocha, or jest 

- Experience with Git version control 

- Understanding of CI/CD 

- Strong attention to design detail (UI/UX).