Principal Engineer

JOB DESCRIPTION

Experience: 4-7 years

Location: Bangalore

Wissen Technology is now hiring for a Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting. 

Required Skills:

• Exp. - 4-7 years
• Experience in Core Java and Spring Boot.
• Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns.
• Should have the ability to analyze, design, develop and test complex, low-latency client- facing applications.
• Good development experience with RDBMS.
• Good knowledge of multi-threading and high-performance server-side development.
• Basic working knowledge of Unix/Linux.
• Excellent problem solving and coding skills.
• Strong interpersonal, communication and analytical skills.
• Should have the ability to express their design ideas and thoughts.

Job Title: Lead Backend Web App Developer

Experience: 10–15 Years

Location: Bengaluru (Hybrid)

Role Overview:

We are seeking an experienced Lead Backend Web App Developer to design and maintain scalable, cloud-based backend systems. This role demands expertise in microservices, AWS, and backend technologies to deliver efficient and high-performing applications.

Key Responsibilities:

• Build and maintain scalable backend systems for cloud-based web applications.
• Develop microservices using AWS (Lambda, SQS, SNS) and databases (MySQL, NoSQL).
• Design and implement REST APIs for seamless communication between systems.
• Create containerized solutions with Docker for efficient deployment.
• Solve real-world problems with enterprise-class product designs.
• Contribute to key decisions on product and technology direction.
• Promote frameworks, standards, and new technologies within the team.

Required Skills:

• Experience: 10+ Years in Backend Development; 3+ Years in large-scale, microservices-based projects.
• Backend Technologies: Proficiency in Python, Node.js, and Java.
• Cloud Expertise: Strong experience with AWS services (Lambda, SQS, SNS).
• Database Skills: Expertise in MySQL and NoSQL databases.
• Microservices Architecture: Deep understanding of distributed systems and scalability.
• DevOps Tools: Hands-on experience with Docker.
• API Development: Proven expertise in designing and consuming REST APIs.
• Soft Skills: Excellent problem-solving and communication abilities.

Why Join Us?

• Work on impactful projects with real-world applications.
• Solve complex problems in a dynamic, fast-paced environment.
• Collaborate with a team of skilled professionals.

Job Title : Senior Python Developer – Product Engineering

Experience : 5 to 8 Years

Location : Pune, India (Hybrid – 3-4 days WFO, 1-2 days WFH)

Employment Type : Full-time

Commitment : Minimum 3 years (with end-of-term bonus)

Openings : 2 positions

• Junior : 3 to 5 Years
• Senior : 5 to 8 Years

Mandatory Skills : Python 3.x, REST APIs, multithreading, Celery, encryption (OpenSSL/cryptography.io), PostgreSQL/Redis, Docker/K8s, secure coding

Nice to Have : Experience with EFSS/DRM/DLP platforms, delta sync, file systems, LDAP/AD/SIEM integrations

🎯 Roles & Responsibilities :

• Design and develop backend services for DRM enforcement, file synchronization, and endpoint telemetry.
• Build scalable Python-based APIs interacting with file systems, agents, and enterprise infra.
• Implement encryption workflows, secure file handling, delta sync, and file versioning.
• Integrate with 3rd-party platforms: LDAP, AD, DLP, CASB, SIEM.
• Collaborate with DevOps to ensure high availability and performance of hybrid deployments.
• Participate in code reviews, architectural discussions, and mentor junior developers.
• Troubleshoot production issues and continuously optimize performance.

✅ Required Skills :

• 5 to 8 years of hands-on experience in Python 3.x development.
• Expertise in REST APIs, Celery, multithreading, and file I/O.
• Proficient in encryption libraries (OpenSSL, cryptography.io) and secure coding.
• Experience with PostgreSQL, Redis, SQLite, and Linux internals.
• Strong command over Docker, Kubernetes, CI/CD, and Git workflows.
• Ability to write clean, testable, and scalable code in production environments.

➕ Preferred Skills :

• Background in DRM, EFSS, DLP, or enterprise security platforms.
• Familiarity with file diffing, watermarking, or agent-based tools.
• Knowledge of compliance frameworks (GDPR, DPDP, RBI-CSF) is a plus.

Position : Lead – Java Full Stack Developer

Experience : 7 to 12 Years

Location : Kochi / Thiruvananthapuram / Remote

Notice Period : Immediate to 15 Days

Open Positions : 1

Role Overview :

We are looking for a Lead Java Full Stack Developer with strong expertise in Java (Java 21, Spring Boot, and Hibernate), Angular (v19), and AWS to lead agile scrum teams and drive end-to-end feature delivery.

Key Skills Required :

• Java 21, Spring Boot MVC, Spring Data, Hibernate, Gradle
• Angular 19, HTML5, CSS3, JavaScript, REST APIs
• PostgreSQL / RDBMS / NoSQL
• AWS services: S3, Secrets Manager, CloudWatch
• CI/CD (Jenkins, GitHub), Docker
• Unit Testing (Jasmine/Karma or Jest)
• Tools: JIRA, Azure DevOps, Confluence
• Strong in design patterns, OOPs concepts, and performance optimization
• Excellent debugging and communication skills

Responsibilities :

• Design, develop, and deploy scalable full stack solutions
• Lead sprint tasks, perform code reviews, and ensure code quality
• Collaborate with stakeholders and convert requirements into technical specs
• Participate in Agile ceremonies and follow DevOps/CI-CD best practices
• Guide team members and promote technical best practices

Interview Process :

1. Technical Round
2. 2–3 Technical Rounds
3. Final Technical Discussion

About Us

Tradelab Technologies is a leading fintech company building high-performance trading platforms, low-latency systems, and scalable market infrastructure for the global trading and broking ecosystem. We work at the intersection of technology, trading, and innovation.

Role Overview

We are looking for an experienced Python Backend Developer with strong expertise in trading, low-latency systems, or high-frequency trading (HFT). The ideal candidate will design, develop, and optimize backend components powering real-time trading systems.

Key Responsibilities

• Develop and maintain backend microservices and real-time trading components using Python.
• Build low-latency, high-throughput systems optimized for trading workflows.
• Integrate with market data feeds, order management systems, APIs, and broker/exchange interfaces.
• Write clean, scalable, and high-performance code with a focus on reliability and fault tolerance.
• Work closely with product, QA, and DevOps teams to deliver robust and scalable platforms.
• Troubleshoot production issues and optimize system performance.
• Ensure system security, stability, and compliance with industry standards.

Required Skills & Experience

• 5–8 years of backend development experience with Python.
• Strong experience in trading/HFT/fintech/market infrastructure is mandatory.
• Deep understanding of algorithms, data structures, and system design.
• Experience working with multithreading, multiprocessing, asynchronous programming.
• Strong knowledge of API development (REST, WebSockets).
• Experience with Redis, Kafka, RabbitMQ, PostgreSQL/MySQL, or similar technologies.
• Hands-on experience building low-latency and high-availability systems.
• Familiarity with Linux systems, shell scripting, and performance profiling.
• Exposure to FIX protocol, OMS, RMS, or market data systems is a plus.

Good to Have

• Knowledge of microservices architecture and containerization (Docker, Kubernetes).
• Understanding of exchange trading mechanisms and order lifecycles.
• Prior experience in broker terminals, algo systems, or risk engines.

Why Join Tradelab Technologies?

• Work on cutting-edge trading technologies impacting millions of users.
• Fast-paced, innovation-driven engineering culture.
• Opportunity to build mission-critical systems in fintech and HFT.
• Competitive compensation and growth opportunities.

About Company

Our client is in the business of delivering cutting-edge software solutions, hardware systems, and IT services. It lends the right technological edge to governments and businesses. This enables them to achieve their organizational objectives efficiently and effectively to scale their businesses to newer heights.

Minimum Requirements/Qualifications:

• Bachelor’s/Master’s degree in computer science, Computer Engineering or a related field is preferred.

• Must have at least 5 to 7 years of experience in PostgreSQL.

• Sound knowledge of Object-Oriented Programming (OOP) Patterns and Concepts.

• Knowledge & hands-on experience with PostgreSQL, Java, and Spring Framework is a must.

• Additional knowledge of JDBC, Apache TomCat Server & relevant open-source technologies is required.

• Must have experience with Bootstrap CSS, jQuery, etc.

• Basic Understanding of the concepts of MVC (Model-View-Controller) Pattern, JDBC (Java Database

Connectivity), and RESTful web services.

• Experience in handling external and embedded databases.

Roles & Responsibilities

• Maintaining the Database, creating efficient queries, and understanding and improving the current database structure.

• Develop new modules, patches & Updates/upgrades for an existing application (developed in house by the client)

• Analyze user requirements to define business objectives.

• Maintain Java-based applications that can be high-volume and low-latency.

• Identify and resolve any technical issues arising.

• Write well-designed, testable code.

• Conducting software analysis, programming, testing, and debugging.

• Support continuous improvement, investigating alternatives and technologies, and presenting for architectural review.

As a Go lang Developer, you will be working on Blockchain Layer 1.

● Advanced proficiency in Golang programming language, and good skills in languages such as C++,

Java, Solidity and Python (good to have).

● Extensive experience in back-end development, algorithms, and data structures.

● Extensive Knowledge of blockchain structure, protocol development or Smart Contract

● Writing clean, efficient, and reusable code that follows best practices and coding standards.

● knowledge of distributed and decentralized network protocols

● Knowledge of various decentralized ledger technologies and protocols

● Understanding of gossip protocol and consensus protocol

● Knowledge of best practices in data protection.

● Collaborating with managers to determine technology needs and envisaged functionalities.

● Creating application features and interfaces by using programming languages and writing multithreaded codes.

● Applying the latest cryptology techniques to protect digital transaction data against cyberattacks and information hacks.

● Maintaining client and server-side applications.

Requirements:

• Energetic self-starter, with a desire to work in a startup environment.
• Proficient in advanced Java programming skills.
• Expert in Application development cloud/on premise end to end. Middle layer, DB layer.
• Nice to have understanding on MQ and DB
• Good hands on in Complex Event Processing systems.
• Solved scale and performance issues while dealing with huge sets of data. Pre compute or data aggregation frameworks to achieve good response time.
• Real world experience working with large datasets and NoSQL database technologies
• Experience of debugging applications running on Unix like systems (e.g. Ubuntu, CentOS)
• Experience developing RESTful APIs for complex data sets
• Knowledge of container based development & deployment (e.g. Dockers, rkt)
• Expertise in software security domain, a plus

External Title: Backend Developer.

Location: Remote

Year of experience: 4+ years

Job Description:

• Understanding of the working of a web-based application.
• Expert Knowledge of Microservices architecture.
• Understanding the nature of asynchronous programming and its quirks and workarounds.
• Proficient understanding of code versioning tools, such as Git.
• Basic understanding of REST APIs and their concepts.
• Basic understanding of front-end technologies, such as HTML5, and CSS3, JavaScript.

Post – Java Full Stack Developer

Total Experience – 5 to 8 years

Relevant Experience – 3 Years plus

Salary – Good Hike on CTC

Location – Bangalore, Chennai, Pune

Qualification - Graduation is must

Industry – Information Technology

Mandatory Skills –  Java, react/Angular atleast 3 years of experience, cloud Technology, Micro services Architect

Desired Skills - Machine Learning and Artificial

Roles & Responsibilities

- To drive and shape the technical roadmap & delivery of our next Enterprise Cloud based Applications driven by AI,ML products that impact millions of users on a daily basis. You will partner with a wide range of stakeholders from product, data science, and business, own and evolve the roadmap and technical strategy to build game changing tech for various teams. This is a highly critical and visible role that has a tangible impact on both internal user and external customer experience, as well as the company's bottom-line

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