

Job Description
We are looking for a ROR developer. If you're a creative problem solver who is eager to develop amazing products and hungry for a new adventure, a word class workplace is waiting for you.
- Production experience in Ruby.
- A completed technical degree in Computer Science or any related fields.
- 3+ years of professional product development experience.
- Being comfortable with microservices architectures, API-based
- You are a pragmatic programmer who understands what is needed to get things done.
- Problem solving and collaborative mindset.
- Experience working with DevOps (Docker, Kubernetes, Terraform).
- Experience with AWS (RDS, DDB, Lambda, CW, EC2, SQS, SNS, Cognito, Kinesis).
- Experience with performance improvements (Caching Techniques, SQL Query Optimization, Performance monitoring and profiling.
- Deep understanding of service-oriented and microservices architectural patterns, troubleshooting methods and best practices.
- Takes end to end ownership of the development and operation of complete features.

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Role Overview:
As a Backend Developer at LearnTube.ai, you will ship the backbone that powers 2.3 million learners in 64 countries—owning APIs that crunch 1 billion learning events & the AI that supports it with <200 ms latency.
Skip the wait and get noticed faster by completing our AI-powered screening. Click this link to start your quick interview. It only takes a few minutes and could be your shortcut to landing the job! - https://bit.ly/LT_Python
What You'll Do:
At LearnTube, we’re pushing the boundaries of Generative AI to revolutionise how the world learns. As a Backend Engineer, you will be building the backend for an AI system and working directly on AI. Your roles and responsibilities will include:
- Ship Micro-services – Build FastAPI services that handle ≈ 800 req/s today and will triple within a year (sub-200 ms p95).
- Power Real-Time Learning – Drive the quiz-scoring & AI-tutor engines that crunch millions of events daily.
- Design for Scale & Safety – Model data (Postgres, Mongo, Redis, SQS) and craft modular, secure back-end components from scratch.
- Deploy Globally – Roll out Dockerised services behind NGINX on AWS (EC2, S3, SQS) and GCP (GKE) via Kubernetes.
- Automate Releases – GitLab CI/CD + blue-green / canary = multiple safe prod deploys each week.
- Own Reliability – Instrument with Prometheus / Grafana, chase 99.9 % uptime, trim infra spend.
- Expose Gen-AI at Scale – Publish LLM inference & vector-search endpoints in partnership with the AI team.
- Ship Fast, Learn Fast – Work with founders, PMs, and designers in weekly ship rooms; take a feature from Figma to prod in < 2 weeks.
What makes you a great fit?
Must-Haves:
- 2+ yrs Python back-end experience (FastAPI)
- Strong with Docker & container orchestration
- Hands-on with GitLab CI/CD, AWS (EC2, S3, SQS) or GCP (GKE / Compute) in production
- SQL/NoSQL (Postgres, MongoDB) + You’ve built systems from scratch & have solid system-design fundamentals
Nice-to-Haves
- k8s at scale, Terraform,
- Experience with AI/ML inference services (LLMs, vector DBs)
- Go / Rust for high-perf services
- Observability: Prometheus, Grafana, OpenTelemetry
About Us:
At LearnTube, we’re on a mission to make learning accessible, affordable, and engaging for millions of learners globally. Using Generative AI, we transform scattered internet content into dynamic, goal-driven courses with:
- AI-powered tutors that teach live, solve doubts in real time, and provide instant feedback.
- Seamless delivery through WhatsApp, mobile apps, and the web, with over 1.4 million learners across 64 countries.
Meet the Founders:
LearnTube was founded by Shronit Ladhani and Gargi Ruparelia, who bring deep expertise in product development and ed-tech innovation. Shronit, a TEDx speaker, is an advocate for disrupting traditional learning, while Gargi’s focus on scalable AI solutions drives our mission to build an AI-first company that empowers learners to achieve career outcomes. We’re proud to be recognised by Google as a Top 20 AI Startup and are part of their 2024 Startups Accelerator: AI First Program, giving us access to cutting-edge technology, credits, and mentorship from industry leaders.
Why Work With Us?
At LearnTube, we believe in creating a work environment that’s as transformative as the products we build. Here’s why this role is an incredible opportunity:
- Cutting-Edge Technology: You’ll work on state-of-the-art generative AI applications, leveraging the latest advancements in LLMs, multimodal AI, and real-time systems.
- Autonomy and Ownership: Experience unparalleled flexibility and independence in a role where you’ll own high-impact projects from ideation to deployment.
- Rapid Growth: Accelerate your career by working on impactful projects that pack three years of learning and growth into one.
- Founder and Advisor Access: Collaborate directly with founders and industry experts, including the CTO of Inflection AI, to build transformative solutions.
- Team Culture: Join a close-knit team of high-performing engineers and innovators, where every voice matters, and Monday morning meetings are something to look forward to.
- Mission-Driven Impact: Be part of a company that’s redefining education for millions of learners and making AI accessible to everyone.
We are seeking an experienced and highly skilled Technical Lead with a strong background in Java, SaaS architectures, firewalls, and cybersecurity products, including SIEM and SOAR platforms. The ideal candidate will lead technical initiatives, design and implement scalable systems, and drive best practices across the engineering team. This role requires deep technical expertise, leadership abilities, and a passion for building secure and high-performing security solutions.
Key Roles & Responsibilities:
- Lead the design and development of scalable and secure software solutions using Java.
- Architect and build SaaS-based cybersecurity applications, ensuring high availability, performance, and reliability.
- Provide technical leadership, mentoring, and guidance to the development team.
- Ensure best practices in secure coding, threat modeling, and compliance with industry standards.
- Collaborate with cross-functional teams, including Product Management, Security, and DevOps to deliver high-quality security solutions.
- Design and implement security analytics, automation workflows and ITSM integrations.
- Drive continuous improvements in engineering processes, tools, and technologies.
- Troubleshoot complex technical issues and lead incident response for critical production systems.
Basic Qualifications:
- A bachelor’s or master’s degree in computer science, electronics engineering or a related field
- 3-6 years of software development experience, with expertise in Java.
- Strong background in building SaaS applications with cloud-native architectures (AWS, GCP, or Azure).
- In-depth understanding of microservices architecture, APIs, and distributed systems.
- Experience with containerization and orchestration tools like Docker and Kubernetes.
- Knowledge of DevSecOps principles, CI/CD pipelines, and infrastructure as code (Terraform, Ansible, etc.).
- Strong problem-solving skills and ability to work in an agile, fast-paced environment.
- Excellent communication and leadership skills, with a track record of mentoring engineers.
Preferred Qualifications:
- Experience with cybersecurity solutions, including SIEM (e.g., Splunk, ELK, IBM QRadar) and SOAR (e.g., Palo Alto XSOAR, Swimlane).
- Knowledge of zero-trust security models and secure API development.
- Hands-on experience with machine learning or AI-driven security analytics.


Responsibilities :
● Designing and developing robust and scalable server-side applications using Python, Flask, Django, or other relevant frameworks and technologies.
● Collaborating with other developers, data scientists, and data engineers to design and implement RESTful APIs, web services, and microservices architectures.
● Writing clean, maintainable, and efficient code, and reviewing the code of other team members to ensure consistency and adherence to best practices.
● Participating in code reviews, testing, debugging, and troubleshooting to ensure the quality and reliability of applications.
● Optimizing applications for performance, scalability, and security, and monitoring the production environment to ensure uptime and availability. ● Staying up-to-date with emerging trends and technologies in web development, and evaluating and recommending new tools and frameworks as needed.
● Mentoring and coaching junior developers to ensure they grow and develop their skills and knowledge in line with the needs of the team and the organization.
● Communicating and collaborating effectively with other stakeholders, including product owners, project managers, and other development teams, to ensure projects are delivered on time and to specification.
You are a perfect match, if you have these qualification :
● Strong experience in Python and server-side development frameworks such as Flask or Django.
● Experience in building RESTful APIs, web services, and microservices architectures.
● Experience in using database technologies such as MySQL, PostgreSQL, or MongoDB.
● Familiarity with cloud-based platforms such as AWS, Azure, or Google Cloud Platform.
● Knowledge of software development best practices such as Agile methodologies, Test-Driven Development (TDD), and Continuous Integration/Continuous Deployment (CI/CD).
● Excellent problem-solving and debugging skills, and the ability to work independently as well as part of a team.
● Strong communication and collaboration skills, and the ability to work effectively with other stakeholders in a fast-paced environment
Work With Us
Get To Know Us First!
Freecharge a subsidiary of Axis Bank Limited founded in 2010, is a Fin-Tech organisation revolutionizing Financial Products through technology.
At our core, we’re a creative company. Ideas and pixels is where we live and we love building magical products that make our users feel ‘wow’. At Freecharge, you'll have the chance to do the best work of your life. We’re on a journey to build something new, something different and something innovative & that requires passion to build such incredible products.
Come join us and shape the future of Fin-Tech.
Do You Make The Cut?
We are looking for a motivated developer to join our agile team of developers as a Lead to mentor and as an individual contributor to drive best practices in the product.
You will be responsible for the design, architecture, and delivery of a feature/product with the highest quality. Providing the product with visible benefit to end-users in an iterative fast-paced environment by creating solutions suitable for the job in real-time.
Title: Lead SDE (Backend)
Location: Gurugram
Experience: 3-7 Yrs.
Education: Bachelor’s / Master’s in Software Engineering
Responsibilities
- In this lead role, you will be designing and developing complex software systems that have been successfully delivered to customers.
- Ensure the quality of design of systems by serving as a technical lead on our most demanding, cross-functional teams
- Build reusable code and libraries for future use.
- Build highly available, high performance, scalable software and you will work on distributed systems for massive-scale systems
- Responsible for code quality of the product being developed along with unit and integration testing.
- Mentor junior developers to improve their skills, and make them more effective, product software engineers.
- Communicate with technical teams, and senior management to collect requirements, describe software product features, technical designs, and product strategy.
Sounds Like You?
- 4+ years of software development experience with Enterprise Java (JDK 8 and above), Spring (Boot, MVC, AOP, DI), ORM Frameworks.
- 1+ years of experience contributing to the architecture and design (LLD, HLD, Solid principles and design patterns and scaling) of new and current systems.
- Strong experience in technically leading junior developers with a focus on the goal.
- Strong experience in data structures & algorithms and their space & time complexities.
- Solid understanding of multithreading, microservices, MVC and strong OO skills with demonstrated experience in developing complex and reusable APIs.
- Strong experience working with Databases like SQL & NoSQL.
- Experience working with microservices-based architecture.
- Experience in high traffic, highly scalable distributed system designs, complex web applications, and code reviews.
- Experience working in an Agile environment.
- Solid understanding of the full software development life cycle and the domain.
- Good to have knowledge of messaging systems like SNS/ SQS /Kafka etc.
Life at Freecharge!
Our Playground!
- 450+ FCian’s, at Gurugram & Bengaluru locations
- Collaboration spaces & A flat and transparent culture
- Wow Corners, fun & reading Zone
- Best learning and development opportunities
Benefits
- Day-care facility
- Comprehensive Insurance Policy
- Wellness Benefits like Health check-ins
- 26 Weeks Maternity & 2 Weeks Paternity Leaves
- Adoption Assistance Program
- On-Site Parking at all locations
- A chance to have a big impact early in your career
ARE YOU READY?
TO
#ChargeYourFuture

- You have 3+ years of experience using Golang/ Go Programming development language.
- You can write clean, high-quality code in a variety of languages and are also able to spot (and improve) bad code
- You have experience with Agile, Lean and/or Continuous Delivery approaches such as Continuous Integration, TDD, Infrastructure as Code, etc.
- Bonus points if you have knowledge of cloud technology such as AWS, Docker or Kubernetes


Our client is the Health-tech initiative of India's largest business house. Started in 2015, it empowers healthcare providers and consumers in India. All healthcare monitoring services are made available through an app that will help connect doctors, hospitals, pharmacies, laboratories and consumers, enabling preventive and predictive healthcare. It helps the care-givers to track the entire patient journey from the initial appointment and maintaining their records, generating lab test reports to providing virtual consultation and home-care solutions. It is expected that this futuristic guide will strengthen doctor-patient relationship and enhance the in-clinic experience.
As the Java Programmer, you will be responsible for developing cutting edge health-tech applications that include high scale transaction processing, intelligent bot based programs and data analytics.
What you will do:
- Building components for the company's advanced health tech platform using Java, Solr, SpringBoot, DialogFlow
- Communicating effectively in a cross-functional product development team and present ideas and solutions effectively
- Participating in technical planning and requirements gathering phases including design, code, test, troubleshoot, and document engineering software applications
- Developing the Code as per the requirements
- Working with product team and constructing the tech roadmap
- Designing, building and scaling the company's backend microservices
- Maintaining code integrity and organization
- Applying all quality requirements to make the code production ready
- Developing and deploying new features to facilitate related procedures and tools if necessary
- Developing documentation related to technical aspects and to facilitate current support, development, upgrades, or migrations
- Designing and building efficient, reusable, and reliable Java code
- Pro actively catching and fixing bugs, and providing support for the back end services
- Managing servers and infrastructure by keeping the lights on and refining the deployment architecture
What you need to have:
- Expert at hands on programming in JAVA and J2EE
- Must be from Product based companies (Should have developed Web Apps)
- Proven expertise in Java interfaces with MongoDB (or similar noSQL databases) as well as relational databases (mySQL, Postgres etc)
- Key contributor in atleast one 6+ months development project involving SpringBoot and Hibernate
- Strong understanding of application server infrastructure
- Good working knowledge of Maven based build systems
- Good understanding of build and deployment pipelines that involve ANT and Jenkins
- Proficient understanding of code versioning tools, such as Git or SVN
- Good knowledge of working on Rest APIs, Webservices
- Excellent problem-solving skills
- Hands on experience with Lucene/Solr
- Familiarity with DiagFlow based chat bot building
- Knowledge of NLP
- Learnt AI/ML systems
- Excellent interpersonal skills and the ability to build good working relationships.
- Must be self-motivated to prioritize and manage workload and meet critical project milestones and deadlines.
- Able to effectively collaborate with a team as well as take initiative and work independently to solve problems
Have an experience building backend server side applications in Node.js and Express.js Have in-depth knowledge and experience of using ES6+ features and Object Oriented Principles Have sound knowledge and are familiar with databases like MongoDb - (Preferred) and Mysql. Have good exposure to cloud native technologies (AWS Lambda, S3, RDS, etc) Have working knowledge of version control (Git) and continuous deployment Have experience in optimising backend API’s and database queries for optimal performance. You are good at problem solving and have analytical skills You are flexible in adapting new technologies and frameworks as per the projects needs
Infrastructure
Pocket Gems wants to build the greatest games and interactive entertainment in the world.
That’s the mission our founders began within an apartment above a pizza shop back in 2009
and we continue it today.
Pocket Gems has grown to over 250 people in San Francisco. With $155 million in backing from
Sequoia Capital and Tencent, we’re constantly breaking new ground with graphically rich mobile
games, fun new genres of mobile entertainment, and innovative technologies like our mobilefirst Mantis Engine.
Our products have been downloaded over 325 million times by players around the world. We
have several flagship products including the most recent - Adventure Chef Merge Explorer, a
casual merge and explore game. Some of our other ongoing hits include Episode, a mobile
storytelling network and platform, and War Dragons, a visually stunning 3D real-time strategy
game.
Pocket Gems is home to some of the most massive and delightful mobile-first games, like War
Dragons and Episode. Those games need a solid backend platform, to function critical tasks to
delight our players, and is supported and optimized by our Central Engineering team. As a Sr.
Software Engineer on the Central Infrastructure Team, you will build microservices that acts as
the core of all our games, facilitate the processing and recording of billions of events per day,
support critical systems for marketing, finance. You will be responsible for some of our biggest
projects as you build APIs and infrastructure that scales to millions of players in real-time
games.
What You’ll Do:
• Implement flexible, reusable, and scalable solutions to improve our data pipeline
• Develop microservices for critical infrastructure like A/B tests, Offer recommendation, etc
that is mission-critical to the business
• Develop microservices for our games such as real-time communication platforms,
leaderboard, etc
• Build and maintain integrations with third-party APIs that you suggest or write yourself
• Build scalable web tools (including open source tools) to support data analysis and
visualization for the company and influence what we build for our games’ players
What You Bring to the Central Infrastructure Engineering team:
• Minimum of 7 years of professional experience (including 3+ years backend experience)
• A degree in computer science, engineering, or relevant field
• Experience leading complex projects, preferably involving distributed systems
• Deep experience with AWS, GCP, or Hadoop, and related backend technologies is a
plus
• Strong skills in data structures, algorithms, software design, and OOP
• A love for delighting users, both internal and external, with reliable tools, data, and
creative and highly technical solutions to their problems
Extra Gems for:
• Experience in working with microservices
● Integration of user-facing elements developed by front-end developers with server-side logic.
● Writing reusable, testable, and efficient code.
● Design and implementation of low-latency, high-availability, and performant applications.
● Implementation of security and data protection.
● Integration of data storage solutions.
● Familiar with Graphql, REST APIs, MongoDB, SQL, NoSQL, AWS services, Firebase. (Knowledge of web sockets is optional)

