
We're looking for a high-energy Java engineer to design and implement scalable microservices using Spring Boot. You'll collaborate across teams to deliver clean, efficient, and high-performance backend services.
š ļø Key Responsibilities
- Design, develop, and maintain RESTful services and microservices using Spring Boot
- Utilize OOP, Java Collections, Exception Handling, and method overloading/overriding in modern coding practices
- Build and optimize multithreaded systems (Threads, synchronization, wait(), notify(), yield()) for performance and scalability
- Write unit and integration tests (JUnit, Mockito, Spring Test) to ensure code quality
- Collaborate with cross-functional teams (QA, DevOps, Product) through code reviews and feature planning
- Diagnose and resolve performance bottlenecksJVM tuning, SQL/caching optimizations
- Adhere to coding standards, best practices, and participate in peer code review
šÆ Required Skills & Experience
- Strong Java fundamentals: OOP, Collections, Generics, Exception Handling
- Concurrency mastery: multithreading, synchronization primitives (wait(), notify(), yield())
- Spring Boot: solid experience building, testing, deploying REST APIs
- Microservices: design, inter-service communication, stateless service patterns
- Testing frameworks: JUnit, Mockito, Spring Test
- Performance tuning: profiling, optimization with JVM settings and database queries
- Tools & practices: Git, Maven/Gradle, CI/CD pipelines, Docker/Kubernetes (plus)
- Soft skills: strong problem-solving, collaboration, and effective communication

About Wissen Technology
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to WorkĀ®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
Connect with the team
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Location: Bangalore
Department: Engineering
Reports to: SVP
Experience required: 6+ years
About Tracxn:
Tracxn (Tracxn.com) is a Bangalore-based product company providing a research and deal sourcing platform for Venture Capital, Private Equity, Corp Dev, and professionals working around the startup ecosystem.
We are a team of 600+ working professionals serving customers across the globe. Our clients include Funds like Andreessen Horowitz, Matrix Partners, GGV Capital, and Large Corporations such as Citi, Embraer & Ferrero.
Founders
- Neha Singh (ex-Sequoia, BCG | MBA - Stanford GSB)
- Abhishek Goyal (ex-Accel Partners, Amazon | BTech - IIT Kanpur)
About Technology Team:Ā
Tracxn's Technology team is 60+ members strong and growing. The technology team is subdivided into multiple smaller teams, each owning one or more services/components of the technology platform. Ours is a young team of motivated engineers with a minimal management structure where almost everyone is actively involved in technical development and design activities. We have a team-centric culture where the ownership and responsibility of a feature or module lie with a team compared to an individual.
We value ownership, continuous learning, consistency, and discipline as a team.
Our Tech Stacks:
We work on an array of technologies, including but not limited to backend and frontend systems such as Java, Python, Spring Boot, Node.js, ReactJS, Next.js, Webpack, and Storybook; cloud and serverless platforms like AWS, etc; data and infrastructure technologies such as Elastic Stack (Elasticsearch), MongoDB, MySQL, Redis, Kafka, and Ansible; large-scale web crawling solutions; modern data pipelines and ETL workflows; and AI/ML-driven projects.
Job Overview:
We are looking for experienced software engineers with 6+ years of overall software development experience, including backend development and proven people-management skills. The ideal candidate will lead the engineering team(s), drive technical excellence, and ensure timely delivery of high-quality software solutions.
Job Responsibilities:
- Lead, mentor, and manage a team of software engineers
- Own technical planning, architecture discussions, and execution
- Collaborate with product managers and stakeholders
- Drive best practices in software development, testing, and deployment
- Conduct code reviews and ensure high engineering standards
- Manage delivery timelines, resource planning, and technical risks
- Support hiring, onboarding, and performance management of engineers
Job Requirements :
Professional Experience
- Ā Proven experience leading or managing software engineering teams
- Track record of delivering complex, scalable software systems
- Experience driving technical initiatives and influencing architectural decisions
- Strong collaboration experience with product, design, and cross-functional teams.
Technical Leadership & Management
- Ā Ability to mentor, coach, and grow engineers across different experience levels
- Experience conducting performance reviews and providing technical feedback
- Strong ownership of team delivery, timelines, and quality
- Experience balancing hands-on technical work with people management
Backend & System Architecture Expertise
- Strong proficiency in modern backend architectures, design patterns, and microservices architecture.
- Proficiency in at least one server-side programming language (e.g., Java, Python, etc.)
- Solid understanding of API design principles and implementation
- Hands-on experience with relational and non-relational databases and knowledge of data pipelines and data warehousing concepts.
Technical Competencies
- Strong system design and problem-solving skills
- Knowledge of caching strategies, performance optimization, and scalability
- Understanding of data modeling and query optimization
- Familiarity with search and indexing technologies
- Understanding of security best practices in backend systems
Culture:
- Work with performance-oriented teams driven by ownership and passion.
- Learn to design systems for high accuracy, efficiency, and scalability.
- No strict deadlines, focus on delivering quality work.
- Meritocracy-driven, candid culture. No politics.
- Very high visibility regarding which startups and markets are exciting globally.
About Us:
Tradelab Technologies Pvt Ltd is not for those seeking comfortāwe are for those hungry to make a mark in theĀ trading and fintech industry. If you are looking for just another backend role, this isnāt 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:
⢠Weāre looking for aĀ Backend Developer (Python)Ā with a strong foundation in backend technologies and a deep interest in scalable, low-latency systems.
⢠You should haveĀ 2ā5 years of experienceĀ 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.
⢠TakingĀ calculated risksĀ excites youāyouāre here to build, break, and learn.
⢠You donāt clock in for a paycheck; you clock in toĀ outperform yourselfĀ in a high-frequency trading environment.
⢠You understand the stakesāmilliseconds 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:
⢠2ā5 years of experience inĀ PythonĀ 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.
⢠Bachelorās degree inĀ Computer ScienceĀ 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.
ļæ½ ļæ½ What Youāll Do
⢠Build and scale backend services using Java & Spring Boot
⢠Work on API integrations (REST, SOAP), caching & rate limiting
⢠Contribute across the full SDLC ā design, development, testing & deployment
⢠Solve problems around performance, scalability & reliability
ļæ½ ļæ½ What Weāre Looking For
⢠Strong knowledge of Data Structures & Algorithms
⢠Experience with Java, Spring Boot, REST/SOAP
⢠Hands-on with system & solution design
⢠Database experience: MongoDB / PostgreSQL / MySQL / Oracle
⢠Good debugging skills & unit testing
⢠Familiarity with Git and AI coding assistants (Copilot, Claude, etc.)
Java
Mandatory:
- Strong expertize in Java/J2EE(4-7 years of experience)
- StrongĀ expertize in Microservices, SpringBoot
- Java including multithreading and concurrency
Preferred skills :
- Experience inĀ Virtualization, SDN, NFV, Yang, Netconf
- Good Knowledge on Networking
- Multithreading and concurrency
What we look for:
- Strong analytical and problem-solving skills
- Hands on programming work in AdvanceĀ Java, Springs, Spring Boot framework,
- Ability to independently work on complex business requirementsĀ
- Ability to communicate clearly and conciselyĀ
What will you do:
You will independently work onĀ designing and developing solutions that solve customerās business problems.Ā You will own the assigned problem statements, evaluate multiple technical approaches and use design-thinking to take independent decisions while implementing the solution. You will also guide junior members of the team andĀ participate in code and design review process.
Who should apply:
You have -
- a graduate degree in BE, BTech, MTech, MCA from a reputed institute
- 5 to 7 years of hands-on experience in programming Core Java 8, Spring Boot, Spring Rest Template, Spring Security, Spring Data, Spring JDBC Template
- Good to Have experience/knowledge on Docker, Oracle, MongoDB, Quartz Scheduler, Shell scripting
- Working experience with Windows, Linux environments
the core library/language constructs.
⢠Knowledge of processor, memory, network and storage internals. Familiarity with I/O optimized
algorithms.
⢠Deep understanding of distributed systems including fault modeling, concurrency, isolation,
consensus etc.
⢠Internals of a RDBMS like MySQL
⢠Conversant with the internals of systems like Kafka, Cassandra/Scylla, Redis, RocksDB etc
⢠Working knowledge of hosting and network infrastructure (K8s, Envoy, etc)
⢠Familiarity with binary serialization protocols like thrift/protobuf/flatbuffers etc
⢠Familiar with gRPC, HTTP/2, QUIC, etc.
⢠Troubleshooting memory issues, GC tuning, resource leaks etc.
⢠Strong problem-solving skills, algorithmic skills and data structures.
⢠Productionizing machine learning pipelines using Spark/Flink/TensorFlow etc
⢠Familiarity with big data concepts - HDFS, hive, presto, spark, oozie, ambari, airflow, atlas,
ranger, etc. Familiarity with formats like avro, parquet, orc, arrow etc
⢠Good understanding of branching, build, deployment, continuous integration methodologies
⢠Experience in leading a team and mentoring engineers
⢠Attitude to get Stuff Done!
⢠Ability to make decisions independently.
Desired Background:
⢠Bachelorās or Masterās degree in Engineering from premier institutes preferred
⢠8+ years of experience in software design, development & architecture
Java_FullstackDeveloper_DGT II
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