
Job Description:
Proven experience as a Java Developer with a strong understanding of Java and its ecosystems.
Proficient in Spring Framework (Spring Boot, Spring MVC, Spring Data).
Experience with web application development using technologies such as HTML, CSS, and JavaScript.
Knowledge of relational databases (e.g., MySQL, PostgreSQL) and ORM frameworks (e.g., Hibernate).
Familiarity with build tools such as Maven or Gradle.
Understanding of software development life cycle (SDLC) and agile methodologies.
Excellent problem-solving and debugging skills.
Experience with microservices architecture.
Familiarity with containerization and orchestration tools (e.g., Docker, Kubernetes).
Candidate should also have some App development experience in cloud infra. Like familiarity with Docker, Helm Charts, Kubernetes or AWS/Azure k8s infra.
Candidate should have some App development experience in at least one No-SQL Database also (like MongoDB or Cassandra or Redis) apart from RDBMS.

About Radisys India
About
Radisys are a global leader in open telecom solutions and a proud member of the Reliance Industries family. We enable service providers to become digital experience providers through open and disaggregated platforms and solutions. Our end-to-end portfolio spans from digital endpoints, to open disaggregated access and core solutions, to immersive digital applications and engagement platforms. Our expert services organization delivers full lifecycle support to help service providers build and operate highly scalable, high-performance networks.
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JOB DETAILS:
* Job Title: Lead I - Software Engineering-Kotlin, Java, Spring Boot, Aws
* Industry: Global digital transformation solutions provide
* Salary: Best in Industry
* Experience: 5 -7 years
* Location: Trivandrum, Thiruvananthapuram
Role Proficiency:
Act creatively to develop applications and select appropriate technical options optimizing application development maintenance and performance by employing design patterns and reusing proven solutions account for others' developmental activities
Skill Examples:
- Explain and communicate the design / development to the customer
- Perform and evaluate test results against product specifications
- Break down complex problems into logical components
- Develop user interfaces business software components
- Use data models
- Estimate time and effort required for developing / debugging features / components
- Perform and evaluate test in the customer or target environment
- Make quick decisions on technical/project related challenges
- Manage a Team mentor and handle people related issues in team
- Maintain high motivation levels and positive dynamics in the team.
- Interface with other teams’ designers and other parallel practices
- Set goals for self and team. Provide feedback to team members
- Create and articulate impactful technical presentations
- Follow high level of business etiquette in emails and other business communication
- Drive conference calls with customers addressing customer questions
- Proactively ask for and offer help
- Ability to work under pressure determine dependencies risks facilitate planning; handling multiple tasks.
- Build confidence with customers by meeting the deliverables on time with quality.
- Estimate time and effort resources required for developing / debugging features / components
- Make on appropriate utilization of Software / Hardware’s.
- Strong analytical and problem-solving abilities
Knowledge Examples:
- Appropriate software programs / modules
- Functional and technical designing
- Programming languages – proficient in multiple skill clusters
- DBMS
- Operating Systems and software platforms
- Software Development Life Cycle
- Agile – Scrum or Kanban Methods
- Integrated development environment (IDE)
- Rapid application development (RAD)
- Modelling technology and languages
- Interface definition languages (IDL)
- Knowledge of customer domain and deep understanding of sub domain where problem is solved
Additional Comments:
We are seeking an experienced Senior Backend Engineer with strong expertise in Kotlin and Java to join our dynamic engineering team.
The ideal candidate will have a deep understanding of backend frameworks, cloud technologies, and scalable microservices architectures, with a passion for clean code, resilience, and system observability.
You will play a critical role in designing, developing, and maintaining core backend services that power our high-availability e-commerce and promotion platforms.
Key Responsibilities
Design, develop, and maintain backend services using Kotlin (JVM, Coroutines, Serialization) and Java.
Build robust microservices with Spring Boot and related Spring ecosystem components (Spring Cloud, Spring Security, Spring Kafka, Spring Data).
Implement efficient serialization/deserialization using Jackson and Kotlin Serialization. Develop, maintain, and execute automated tests using JUnit 5, Mockk, and ArchUnit to ensure code quality.
Work with Kafka Streams (Avro), Oracle SQL (JDBC, JPA), DynamoDB, and Redis for data storage and caching needs. Deploy and manage services in AWS environment leveraging DynamoDB, Lambdas, and IAM.
Implement CI/CD pipelines with GitLab CI to automate build, test, and deployment processes.
Containerize applications using Docker and integrate monitoring using Datadog for tracing, metrics, and dashboards.
Define and maintain infrastructure as code using Terraform for services including GitLab, Datadog, Kafka, and Optimizely.
Develop and maintain RESTful APIs with OpenAPI (Swagger) and JSON API standards.
Apply resilience patterns using Resilience4j to build fault-tolerant systems.
Adhere to architectural and design principles such as Domain-Driven Design (DDD), Object-Oriented Programming (OOP), and Contract Testing (Pact).
Collaborate with cross-functional teams in an Agile Scrum environment to deliver high-quality features.
Utilize feature flagging tools like Optimizely to enable controlled rollouts.
Mandatory Skills & Technologies Languages:
Kotlin (JVM, Coroutines, Serialization),
Java Frameworks: Spring Boot (Spring Cloud, Spring Security, Spring Kafka, Spring Data)
Serialization: Jackson, Kotlin Serialization
Testing: JUnit 5, Mockk, ArchUnit
Data: Kafka (Avro) Streams Oracle SQL (JDBC, JPA) DynamoDB (NoSQL) Redis (Caching)
Cloud: AWS (DynamoDB, Lambda, IAM)
CI/CD: GitLab CI Containers: Docker
Monitoring & Observability: Datadog (Tracing, Metrics, Dashboards, Monitors)
Infrastructure as Code: Terraform (GitLab, Datadog, Kafka, Optimizely)
API: OpenAPI (Swagger), REST API, JSON API
Resilience: Resilience4j
Architecture & Practices: Domain-Driven Design (DDD) Object-Oriented Programming (OOP) Contract Testing (Pact) Feature Flags (Optimizely)
Platforms: E-Commerce Platform (CommerceTools), Promotion Engine (Talon.One)
Methodologies: Scrum, Agile
Skills: Kotlin, Java, Spring Boot, Aws
Must-Haves
Kotlin (JVM, Coroutines, Serialization), Java, Spring Boot (Spring Cloud, Spring Security, Spring Kafka, Spring Data), AWS (DynamoDB, Lambda, IAM), Microservices Architecture
******
Notice period - 0 to 15 days only
Job stability is mandatory
Location: Trivandrum
Virtual Weekend Interview on 7th Feb 2026 - Saturday
Job Title : Node.js Developer / Backend Developer
Experience : 4+ Years
Job Location : Mumbai – Andheri
Work Mode : Work From Office (5 Days a Week)
Job Type : Full-time Opportunity
Role Overview :
We are seeking an experienced Node.js / Backend Developer to design, develop, and maintain scalable backend systems.
The ideal candidate will have strong hands-on experience with Node.js, Nest.js, relational and NoSQL databases, and AWS cloud services.
You will work closely with frontend developers, DevOps, and product teams to deliver secure, high-performance, and reliable backend solutions.
Mandatory Skills : Node.js, Nest.js, MongoDB, PostgreSQL, AWS, REST API development, strong backend fundamentals.
Key Responsibilities :
• Design, develop, and maintain scalable backend applications using Node.js & Nest.js
• Build and manage RESTful APIs and backend services
• Work with MongoDB and PostgreSQL for efficient data storage and retrieval
• Develop cloud-ready applications and deploy them on AWS
• Ensure application performance, security, and scalability
• Write clean, well-documented, and maintainable code
• Participate in code reviews and follow best engineering practices
• Troubleshoot, debug, and optimize existing applications
• Collaborate with cross-functional teams for end-to-end delivery
Required Skills & Qualifications :
• 4+ years of experience in Backend / Node.js development
• Strong hands-on experience with Node.js and Nest.js
• Experience working with MongoDB and PostgreSQL
• Good understanding of AWS services (EC2, S3, RDS, etc.)
• Experience building RESTful APIs
• Understanding of backend architecture, design patterns, and best practices
• Strong problem-solving and debugging skills
• Familiarity with version control systems (Git)
Good-to-Have Skills :
• Experience with microservices architecture
• Knowledge of Docker and CI/CD pipelines
• Exposure to message queues or event-driven systems
• Basic understanding of frontend-backend integration
Job Title : Python Django Developer
Experience : 3+ Years
Location : Gurgaon
Working Days : 6 Days (Monday to Saturday)
Job Summary :
We are looking for a skilled Python Django Developer with strong foundational knowledge in backend development, data structures, and operating system concepts.
The ideal candidate should have experience in Django and PostgreSQL, along with excellent logical thinking and multithreading knowledge.
Technical Skills : Python, Django (or Flask), PostgreSQL/MySQL, SQL & NoSQL ORM, REST API development, JSON/XML, strong knowledge of data structures, multithreading, and OS concepts.
Key Responsibilities :
- Write efficient, reusable, testable, and scalable code using the Django framework.
- Develop backend components, server-side logic, and statistical models.
- Design and implement high-availability, low-latency applications with robust data protection and security.
- Contribute to the development of highly responsive web applications.
- Collaborate with cross-functional teams on system design and integration.
Mandatory Skills :
- Strong programming skills in Python and Django (or similar frameworks like Flask).
- Proficiency with PostgreSQL / MySQL and experience in writing complex queries.
- Strong understanding of SQL and NoSQL ORM.
- Solid grasp of data structures, multithreading, and operating system concepts.
- Experience with RESTful API development and implementation of API security.
- Knowledge of JSON/XML and their use in data exchange.
Good-to-Have Skills :
- Experience with Redis, MQTT, and message queues like RabbitMQ or Kafka
- Understanding of microservice architecture and third-party API integrations (e.g., payment gateways, SMS/email APIs)
- Familiarity with MongoDB and other NoSQL databases
- Exposure to data science libraries such as Pandas, NumPy, Scikit-learn
- Knowledge in building and integrating statistical learning models.
We are looking for a Senior Backend Engineer with a strong background in building distributed, scalable, and high-performance backend systems. The ideal candidate has 6+ years of backend engineering experience, including 3+ years in microservices or distributed architecture, and deep expertise in Python, FastAPI, PostgreSQL, Redis, and async I/O patterns.
The candidate will own backend services end-to-end — from architecture and design to implementation, optimization, and production support — while working closely with cross-functional teams to deliver mission-critical systems.
Key Responsibilities
1. Backend Architecture & Development
- Architect, design, and implement backend services using Python (preferably FastAPI) with clean, maintainable, and scalable code.
- Develop microservice components, service communication layers, and distributed workflows.
- Build APIs and backend modules optimized for performance, fault tolerance, and low latency.
2. Distributed Systems & Scalability
- Design and maintain distributed systems capable of handling high throughput and large-scale operations.
- Implement inter-service communication patterns (REST, event-driven, message queues, pub/sub).
- Ensure system resiliency through redundancy, graceful degradation, and autoscaling strategies.
3. Asynchronous & Event-Driven Architecture
- Build async workflows, background tasks, and pipeline services leveraging asyncio or async frameworks.
- Develop event-driven components including producers, consumers, and event processors.
- Optimize I/O-heavy operations to maximize concurrency and throughput.
4. Data Storage, Pipelines & Caching
- Design relational schemas, write optimized SQL queries, and work with PostgreSQL performance tuning (indexes, partitions, query planning).
- Implement caching strategies, rate limiting, distributed locks, and session storage using Redis.
- Build data validation pipelines and compliance-driven data flows ensuring data correctness and auditability.
5. Security, Reliability & Observability
- Implement authentication, authorization, encryption, and secure API practices.
- Build monitoring, alerting, metrics, and tracing systems using modern observability tools.
- Diagnose production issues, identify bottlenecks, and drive long-term fixes and improvements.
6. Code Quality & Technical Leadership
- Conduct detailed code reviews and ensure engineering best practices across the team.
- Participate in technical roadmap planning, architectural discussions, and system design decisions.
- Mentor junior and mid-level engineers; drive a culture of technical excellence and ownership.
Required Qualifications
- 6+ years backend engineering experience.
- 3+ years building microservices or distributed systems.
- Strong expertise in Python and frameworks like FastAPI (or Flask/Django with async exposure).
- Deep understanding of async I/O, concurrency models, and asynchronous programming in Python.
- Strong experience with PostgreSQL (schema design, advanced queries, optimization).
- Hands-on experience with Redis for caching, queues, session management, and distributed patterns.
- Experience with event-driven architectures, message processing, or streaming systems.
- Solid understanding of system design, scalability principles, and API lifecycle management.
- Experience working with CI/CD pipelines, containerization (Docker), and cloud environments.
We’re looking for an Engineering Manager to guide our micro-service platform and mentor a fully remote backend team. You’ll blend hands-on technical ownership with people leadership—shaping architecture, driving cloud best practices, and coaching engineers in their careers and craft.
Key Responsibilities:
Area
What You’ll Own
Architecture & Delivery
• Define and evolve backend architecture built on Java 17+, Spring Boot 3, AWS (Containers, Lambdas, SQS, S3), Elasticsearch, PostgreSQL/MySQL, Databricks, Redis etc...
• Lead design and code reviews; enforce best practices for testing, CI/CD, observability, security, and cost-efficient cloud operations.
• Drive technical roadmaps, ensuring scalability (billions of events, 99.9 %+ uptime) and rapid feature delivery.
Team Leadership & Growth
• Manage and inspire a distributed team of 6-10 backend engineers across multiple time zones.
• Set clear growth objectives, run 1-on-1s, deliver feedback, and foster an inclusive, high-trust culture.
• Coach the team on AI-assisted development workflows (e.g., GitHub Copilot, LLM-based code review) to boost productivity and code quality.
Stakeholder Collaboration
• Act as technical liaison to Product, Frontend, SRE, and Data teams, translating business goals into resilient backend solutions.
• Communicate complex concepts to both technical and non-technical audiences; influence cross-functional decisions.
Technical Vision & Governance
• Own coding standards, architectural principles, and technology selection.
• Evaluate emerging tools and frameworks (especially around GenAI and cloud-native patterns) and create adoption strategies.
• Balance technical debt and new feature delivery through data-driven prioritization.
Required Qualifications:
● 8+ years designing, building, and operating distributed backend systems with Java & Spring Boot
● Proven experience leading or mentoring engineers; direct people-management a plus
● Expert knowledge of AWS services and cloud-native design patterns
● Hands-on mastery of Elasticsearch, PostgreSQL/MySQL, and Redis for high-volume, low-latency workloads
● Demonstrated success scaling systems to millions of users or billions of events Strong grasp of DevOps practices: containerization (Docker), CI/CD (GitHub Actions), observability stacks
● Excellent communication and stakeholder-management skills in a remote-fi rst environment
Nice-to-Have:
● Hands-on experience with Datadog (APM, Logs, RUM) and a data-driven approach to debugging/performance tuning
● Startup experience—comfortable wearing multiple hats and juggling several projects simultaneously
● Prior title of Principal Engineer, Staff Engineer, or Engineering Manager in a high-growth SaaS company
● Familiarity with AI-assisted development tools (Copilot, CodeWhisperer, Cursor) and a track record of introducing them safely
Job Title: Engineering Manager (Java / Spring Boot, AWS) – Remote
Leadership Role
Location: Remote
Employment Type: Full-time
Looking for candidates only with tier 1 colleges OR have experience in a product-based company.
Desired Skills :
● Experience with data modeling and SQL/NoSQL databases
● Experience with distributed systems and microservices
● Good experience in working with any of Java/SpringBoot, GoLang or NodeJS
● Excellent problem solving and debugging skills
● Passionate about the experience of software engineering as much as the output
● A strong sense of ownership
● Ability to communicate your ideas and approach to solving problems with clarity
Responsibilities:
• Take on complex problems that span multiple components and teams.
• Independently own one or more multiple modules, which include: requirement analysis, design, development, maintenance & support
• Write extensive, efficient code to address complex modules that handle the interaction between multiple components.
• Rapidly iterate to add new functionalities and solves complex problems with simple and intuitive solutions
• Produce architecture with clean interfaces, that are efficient and scalable
• Participate and contribute to architectural discussions
• Solve production issues. Investigate and provide solutions to minimize the business impact due to the outage
• Continuously improve performance metrics of modules you own.
• Collaborate effectively across teams to solve problems, execute and deliver results
Requirements:
• Experience: 3+ years
• A Bachelor's or Master's Degree in Computer Science
• Software engineering and product delivery experience, with a strong background in algorithms
• Experience in architecting & building real-time, large-scale e-commerce applications
• Experience with high-performance websites catering to millions of daily traffic is a plus
• Excellent command over Data Structures and Algorithms
• Experience with web technologies, Go/Java/Python
• Language: GO or Python
• Strong expertise in DS and Algo
• Strong leadership skills - have experience mentoring, building products from scratch or incumbent in design and architecture.
• Have worked in the scaling of the system right from scratch.
• Someone worked in small user base to a large user base and wrote optimized code
• Both HLD and LLD
Job Description:
1) Good experience in Java
2) Hands-on experience in Spring boot
3) Hands-on experience in Microservices
Key Responsibilities:
- Rewrite existing APIs in NodeJS.
- Remodel the APIs into Micro services-based architecture.
- Implement a caching layer wherever possible.
- Optimize the API for high performance and scalability.
- Write unit tests for API Testing.
- Automate the code testing and deployment process.
Skills Required:
- At least 2.5 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds.
- Excellent hands-on experience using MySQL or any other SQL Database.
- Good knowledge of MongoDB or any other NoSQL Database.
- Good knowledge of Redis, its data types, and their use cases.
- Experience with graph-based databases like GraphQL and Neo4j.
- Experience developing and deploying REST APIs.
- Good knowledge of Unit Testing and available Test Frameworks.
- Good understanding of advanced JS libraries and frameworks.
- Experience with Web sockets, Service Workers, and Web Push Notifications.
- Familiar with NodeJS profiling tools.
- Proficient understanding of code versioning tools such as Git.
- Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms.
- Should be a fast learner and a go-getter — without any fear of trying out new things Preferences.
- Experience building a large scale social or location-base
Read more about us here: [https://angel.co/company/fireflies](https://angel.co/company/fireflies) and here: [https://yourstory.com/2019/10/funding-startup-fireflies-enterprise-assistant-canaan-partners](https://yourstory.com/2019/10/funding-startup-fireflies-enterprise-assistant-canaan-partners)
We value your skills and abilities more than your resume.
Here's what we look for :
- You have raw intellectual horsepower and ability to learn quickly
- You have a strong background in computer science / math
- You contribute to open source (share your GitHub- More than 1000 commits in past year)
- You have experience working on apps that have supported 10,000+ concurrent users
- You understand sound architecture principals
- You can design and build scalable infrastructure
- You should be a great communicator and culture maintainer:
- We value over-communication and candid feedback and want to build a no-bs, results driven culture
Values that are important to us :
- You're data driven and customer focused
- You value fast & incremental engineering cycles
- You maintain design excellence and minimise complexity
- You measure your results & automate when possible
- You get 10% better at something every week
- You have an internal compass and take accountability & initiative
You'll be working with :
- Node.js, MongoDB
- Redis, RabbitMQ, Elasticsearch
- AWS, Docker, Terraform
- React, Keras, Tensorflow
About us :
- Fireflies.ai is an AI that joins meetings and takes notes automatically. [Product demo](https://app.fireflies.ai/view/ogM9zmKij2). We integrate with the leading platforms: Zoom, Google Meet, Microsoft Teams, Webex, Slack, Salesforce, & more https://fireflies.ai/integrations)).
- We are a US-based, AI company that is building a 100% remote team. Today we have over 40 employees in 5 countries around the world. Our engineering team is 20+ senior engineers. We were [featured on Forbes for Gartner's top 25 enterprise software startups to watch in 2020](https://www.forbes.com/sites/louiscolumbus/2020/07/05/gartners-top-25-enterprise-software-startups-to-watch-in-2020/). We skyrocketed from a few thousand users to almost 100,000 users in 2020.
[Fireflies.ai](http://fireflies.ai) has raised $5 million from top-tier investors including Canaan and angels from Slack, Dropbox, Amazon and Salesforce.
- You'll be working with Sam Udotong, CTO @ Fireflies.ai. Sam graduated from MIT in 2016 where he studied computer science and aerospace engineering. He and his co-founder Krish were [featured as the cover of Entrepreneur magazine in Sept 2020]
- He's been a [speaker at the MIT AI Conference 2020](https://www.youtube.com/watch?v=ywhY2DCIZqU) alongside industry leaders like Richard Socher and Sal Khan. He's guest lectured at Stanford for their intro to AI class. Sam is scrappy & committed - he and Krish bootstrapped the company for 3 years, eating Soylent and Domino's pizza almost every day. [Being Scrappy as an Entrepreneur (Product Demo)](https://app.fireflies.ai/view/vWQjdABHqU). He rejected Harvard Business School to build Fireflies. Sam's goal is to build a multi-regional, boundary-less engineering team that has A+ productivity & communication such that when you go to sleep, you can hand off work and when you wake up, work has already moved forward. If we do these first principles well, we can theoretically build the best engineering organisation in the world.
- We want to transform how people communicate and work. Come work with us if you share the below values and want to work on hard engineering challenges that will actually make a difference in the lives of people.
- We are an equal opportunity employer and strongly value diversity at our company, because our team will be stronger with different perspectives and experiences. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.









