Senior Software Developer

🚀 Job Title : Backend Engineer (Go / Python / Java)

Experience : 3+ Years

Location : Bangalore (Client Location – Work From Office)

Notice Period : Immediate to 15 Days

Open Positions : 4

Working Days : 6 Days a Week

🧠 Job Summary :

We are looking for a highly skilled Backend Engineer to build scalable, reliable, and high-performance systems in a fast-paced product environment.

You will own large features end-to-end — from design and development to deployment and monitoring — while collaborating closely with product, frontend, and infrastructure teams.

This role requires strong backend fundamentals, distributed systems exposure, and a mindset of operational ownership.

⭐ Mandatory Skills :

Strong backend development experience in Go / Python (FastAPI) / Java (Spring Boot) with hands-on expertise in Microservices, REST APIs, PostgreSQL, Redis, Kafka/SQS, AWS/GCP, Docker, Kubernetes, CI/CD, and strong DSA & System Design fundamentals.

🔧 Key Responsibilities :

• Design, develop, test, and deploy backend services end-to-end.
• Build scalable, modular, and production-grade microservices.
• Develop and maintain RESTful APIs.
• Architect reliable distributed systems with performance and fault tolerance in mind.
• Debug complex cross-system production issues.
• Implement secure development practices (authentication, authorization, data integrity).
• Work with monitoring dashboards, alerts, and performance metrics.
• Participate in code reviews and enforce engineering best practices.
• Contribute to CI/CD pipelines and release processes.
• Collaborate with product, frontend, and DevOps teams.

✅ Required Skills :

• Strong proficiency in Go OR Python (FastAPI) OR Java (Spring Boot).
• Hands-on experience building Microservices-based architectures.
• Strong understanding of REST APIs & distributed systems.
• Experience with PostgreSQL and Redis.
• Exposure to Kafka / SQS or other messaging systems.
• Hands-on experience with AWS or GCP.
• Experience with Docker and Kubernetes.
• Familiarity with CI/CD pipelines.
• Strong knowledge of Data Structures & System Design.
• Ability to independently own features and solve ambiguous engineering problems.

⭐ Preferred Background :

• Experience in product-based companies.
• Exposure to high-throughput or event-driven systems.
• Strong focus on code quality, observability, and reliability.
• Comfortable working in high-growth, fast-paced environments.

🧑‍💻 Interview Process :

• 1 Internal Screening Round
• HR Discussion (Project & Communication Evaluation)
• 3 Technical Rounds with Client

This is a fresh requirement, and interviews will be scheduled immediately.

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 2–5 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:

• 2–5 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.

Shift timings : Afternoon

Job Summary

We are seeking an experienced Senior Java Developer with strong expertise in legacy system migration, server management, and deployment. The candidate will be responsible for maintaining, enhancing, and migrating an existing Java/JSF (PrimeFaces), EJB, REST API, and SQL Server-based application to a modern Spring Boot architecture. The role involves ensuring smooth production deployments, troubleshooting server issues, and optimizing the existing infrastructure.

Key Responsibilities

● Maintain & Enhance the existing Java, JSF (PrimeFaces), EJB, REST API, andSQL Server application.

● Migrate the legacy system to Spring Boot while ensuring minimal downtime.

● Manage deployments using Ansible, GlassFish/Payara, and deployer.sh scripts.

● Optimize and troubleshoot server performance (Apache, Payara, GlassFish).

● Handle XML file generation, email integrations, and REST API maintenance.

● Database management (SQL Server) including query optimization and schema updates.

● Collaborate with teams to ensure smooth transitions during migration.

● Automate CI/CD pipelines using Maven, Ansible, and shell scripts.

● Document migration steps, deployment processes, and system architecture.

Required Skills & Qualifications

● 8+ years of hands-on experience with Java, JSF (PrimeFaces), EJB, and REST APIs.

● Strong expertise in Spring Boot (migration experience from legacy Java is a must).

● Experience with Payara/GlassFish server management and deployment.

● Proficient in Apache, Ansible, and shell scripting (deployer.sh).

● Solid knowledge of SQL Server (queries, stored procedures, optimization).

● Familiarity with XML processing, email integrations, and Maven builds.

● Experience in production deployments, server troubleshooting, and performance tuning.

● Ability to work independently and lead migration efforts.

Preferred Skills

● Knowledge of microservices architecture (helpful for modernization).

● Familiarity with cloud platforms (AWS/Azure) is a plus.

Must have exp in Django. [ Mandatory]

• The ability to problem-solve and critically think.
• High level of knowledge of Python and the Django framework.
• Familiarity with event driven programming as well as the MVC.
• Good understanding of SQL databases.
• Good understanding of REST APIs.

Requirements :

- 3+ years of professional software development experience

- 2+ years of object-oriented Java/J2EE hands-on development

- Spring (MVC, IOP/DI, REST, Security) & Hibernate/Spring

- REST web services

- Anyone of the messaging solutions like Kafka, RabbitMQ

Desirables :

- SQL, No SQL concepts

- Experience of Redis or/and Mongo DB

- Agile methodology

- Experience leading or working with cross geography teams

- Unix, shell scripting & Build Systems

Bonus :

- Microservice design and development experience

- Android application development experience

- Experience in performance optimization is an added advantage

- Full SDLC experience (requirements gathering, architecture, development, QA, etc.)

Responsibilities :

- You will be working with the Supply Chain Management team building a leading eCommerce platform for Asian markets

- Order Promising system, promising the order delivery promise date to customer by applying the constraints on current resource availability across different steps in the supply chain. This system needs to scale for thousands of requests per minute with few million seconds of response time

- Warehouse and Inventory Management system, this system needs to scale to processing huge number of orders across different warehouse.

- Transportation and Logistics Management, involves planning and delivery of huge number orders to end customer. This system has the workflows to manage first mile, line haul and last mile delivery to customer

- Inventory Planning, helps in tracking different selling behaviours of the items and triggers / helps planners to replenish, promote, markdown or place inventory at right place to cut down the on hand inventory requirements

- You will be actively involved during the entire technology development lifecycle. Responsibilities will include all aspects from design, coding review, coding, unit testing, end user feedback cycle changes and manging and scaling the system in production.

- Primary role in leading software development teams

- The customized solutions that you will be architecting and developing will also require knowledge and experience with spring / Hibernate, SOAP / REST, microservices and SQL.

- Ability to learn new technologies quickly and willingness to read and digest large existing source code and take ownership on complex component or subsystem to drive improvements and re-architecture

- Work with a team of amazing developers and designers involved in the design and development of global platforms

- Invent and prototype new features, build, test and ship them to customers as SaaS, cloud-based or hosted product platforms

- Drive the implementation of new technologies that improve our ability to build great customers products.

- Participate in a fun, open learning environment with great benefits and smart talented folks that represent among the best globally.

Qualification : 

Requires a bachelor's degree in area of specialty and experience in the field or in a related area. Familiar with standard concepts, practices, and procedures within a particular field. Relies on experience and judgment to plan and accomplish goals. Performs a variety of tasks. A degree of creativity and latitude is required. Typically reports to a supervisor or manager.

Designs, develops, and implements web-based Java applications to support business requirements. Follows approved life cycle methodologies, creates design documents, and performs program coding and testing. Resolves technical issues through debugging, research, and investigation.

Additional Job Details:

Strong in Java, Spring, Spring Boot, REST and developing MicroServices.

Knowledge or experience , Cassandra preferred

Knowledge or experience on Kafka

Good to have but not must

Good to know:

Reporting tools like Splunk/Grafana

Protobuf

Python/Ruby