Backend Java Developer

About Us:

Tradelab Technologies Pvt Ltd is not for those seeking comfort—we are for those hungry to make a mark in the trading and fintech industry. If you are looking for just another backend role, this isn’t it. We want risk-takers, relentless learners, and those who find joy in pushing their limits

every day. If you thrive in high-stakes environments and have a deep passion for performance driven backend systems, we want you.

What You Will Do:

• We’re looking for a Backend Developer (Python) with a strong foundation in backend technologies and a deep interest in scalable, low-latency systems.

• You should have 3–4 years of experience in Python-based development and be eager to solve complex performance and scalability challenges in trading and fintech applications.

• You measure success by your own growth, not external validation.

• You thrive on challenges, not on perks or financial rewards.

• Taking calculated risks excites you—you’re here to build, break, and learn.

• You don’t clock in for a paycheck; you clock in to outperform yourself in a high-frequency trading environment.

• You understand the stakes—milliseconds can make or break trades, and precision is everything.

What We Expect:

• Develop and maintain scalable backend systems using Python.

• Design and implement REST APIs and socket-based communication.

• Optimize code for speed, performance, and reliability.

• Collaborate with frontend teams to integrate server-side logic.

• Work with RabbitMQ, Kafka, Redis, and Elasticsearch for robust backend design.

• Build fault-tolerant, multi-producer/consumer systems.

Must-Have Skills:

• 3–4 years of experience in Python and backend development.

• Strong understanding of REST APIs, sockets, and network protocols (TCP/UDP/HTTP).

• Experience with RabbitMQ/Kafka, SQL & NoSQL databases, Redis, and Elasticsearch.

• Bachelor’s degree in Computer Science or related field.

Nice-to-Have Skills:

• Past experience in fintech, trading systems, or algorithmic trading.

• Experience with GoLang, C/C++, Erlang, or Elixir.

• Exposure to trading, fintech, or low-latency systems.

• Familiarity with microservices and CI/CD pipelines.

Job description

🔧 Key Responsibilities:

• Design and implement robust backend services using Node.js.
• Develop and maintain RESTful APIs to support front-end applications and third-party integrations
• Manage and optimize SQL/NoSQL databases (e.g., PostgreSQL, MongoDB, Snowflake)
• Collaborate with front-end developers to ensure seamless integration and data flow
• Implement caching, logging, and monitoring strategies for performance and reliability
• Ensure application security, scalability, and maintainability
• Participate in code reviews, architecture discussions, and agile ceremonies

✅ Required Skills:

• Proficiency in backend programming languages (Node.js, Java, .NET Core)
• Experience with API development and tools like Postman, Swagger
• Strong understanding of database design and query optimization
• Familiarity with microservices architecture and containerization (Docker, Kubernetes)
• Knowledge of cloud platforms (Azure, AWS) and CI/CD pipelines.

Immediate Hiring for L3 Support Backend .Net Developer Position

Job Description:

We are looking for a proactive and detail-oriented L3 Support Engineer to manage and resolve complex technical issues in our Online Travel Booking Platform. You will act as a bridge between customer support, QA, and development teams, with deep knowledge of application internals, APIs, databases, and cloud environments. Ideal candidates should have hands-on experience in .NET or any other backend stack and should be able to handle critical issues, automate support tasks, and contribute to platform stability.

Key Responsibilities:

1. Investigate and resolve complex issues reported by L1/L2 support or customers in production.
2. Perform deep-dive analysis of application logs, exceptions, database queries, and API interactions.
3. Handle incidents related to booking failures, payment mismatches, GDS/supplier API errors, and latency issues.
4. Coordinate with Engineering teams to identify bugs and ensure timely resolution.
5. Monitor system health, performance metrics, and alerts across services (flight, hotel, payment, user management, etc.).
6. Perform root cause analysis (RCA) and document it with action plans and preventive measures.
7. Build or improve internal tools/scripts to aid in faster triaging and resolution.
8. Own deployment verifications and hotfix validations in staging or production environments.
9. Support business continuity during high-traffic periods (e.g., holiday seasons, campaigns).
10. Maintain a knowledge base of recurring issues, resolutions, and platform behavior.

Required Skills :

Join us in our mission to inspire travellers and create unforgettable experiences! If you have the skills, experience, and enthusiasm to excel in this role, we'd love to hear from you.

3–6 years in Application Support / L3 Support / Backend Engineering

1. Strong knowledge of .NET Core / ASP.NET / C#, or any other backend language (Java, Node.js, Python, etc.)
2. Proficiency in debugging distributed systems and analyzing API and application logs.
3. SQL Server, PostgreSQL, or other RDBMS – query optimization, issue tracing.
4. Understanding of RESTful APIs, OAuth, third-party API integration (e.g., GDS, payment gateways).
5. Exposure to Azure / AWS / GCP – especially logging, monitoring, and app services.
6. Experience using tools like Postman, Fiddler, Kibana, Grafana, Azure Monitor, or similar.
7. Knowledge of microservices, CI/CD pipelines, and application containers (Docker, Kubernetes) is a plus.
8. Excellent communication skills to interact with cross-functional teams

Rel. Experience: 4+ Yrs. Minimum 3 Years of experience in NodeJs

· Javascript concepts

· NodeJS proficiency

· Web programming concepts

· SQL and DB concepts

· Caching concepts

· Knowledge of good programming practices

· Logical and analytical skills

· Communication

if interested please send your updated profile to valli at the rate of sangathr dotcom

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:

1. 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.
2. Excellent hands-on experience using MySQL or any other SQL Database.
3. Good knowledge of MongoDB or any other NoSQL Database.
4. Good knowledge of Redis, its data types, and their use cases.
5. Experience with graph-based databases like GraphQL and Neo4j.
6. Experience developing and deploying REST APIs.
7. Good knowledge of Unit Testing and available Test Frameworks.
8. Good understanding of advanced JS libraries and frameworks.
9. Experience with Web sockets, Service Workers, and Web Push Notifications.
10. Familiar with NodeJS profiling tools.
11. Proficient understanding of code versioning tools such as Git.
12. Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms.
13. Should be a fast learner and a go-getter — without any fear of trying out new things Preferences.
14. Experience building a large-scale social or location-based app.

• Programming experience : 5 to 8 years of programming experience
• Strong technical knowledge in any of the following programming languages : Ruby on Rails /Python/Java and willing to learn and work in Node.js.
• Good Programming aptitude
• Have experience designing and building large scalable web services.
• Have an in-depth understanding of database technologies (SQL and NoSQL) 
• Have experience building RESTful APIs and have good knowledge of RESTful design patterns.
• Be able to communicate and work well within a team
• Brownie points if you have worked on Typescript & Nest.js