Java Technical Lead/Architect

Role & Responsibilities

As a Staff Engineer at Locus, you will play a critical role in defining and driving our backend architecture as we scale globally. You’ll own key systems that handle high volumes of data and transactions, ensuring performance, reliability, and maintainability across distributed environments.

Key Responsibilities-

• Own one or more core applications end-to-end, ensuring reliability, performance, and scalability.
• Lead the design, architecture, and development of complex, distributed systems, frameworks, and libraries aligned with Locus’s technical strategy.
• Drive engineering operational excellence by defining robust roadmaps for system reliability, observability, and performance improvements.
• Analyze and optimize existing systems for latency, throughput, and efficiency, ensuring they perform at scale.
• Collaborate cross-functionally with Product, Data, and Infrastructure teams to translate business requirements into technical deliverables.
• Mentor and guide engineers, fostering a culture of technical excellence, ownership, and continuous learning.
• Establish and uphold coding standards, conduct design and code reviews, and promote best practices across teams.
• Stay ahead of the curve on emerging technologies, frameworks, and patterns to strengthen Locus’s technology foundation.
• Contribute to hiring by identifying and attracting top-tier engineering talent.

Ideal Candidate

• Strong staff engineer profile
• Mandatory (Experience 1): Must have 9+ years in backend engineering with Java, Spring/Spring Boot, and microservices building large and schalable systems
• Mandatory (Experience 2): Must have been SDE-3 / Tech Lead / Lead SE for at least 2.5 years
• Mandatory (Tech skills 1): Strong in DSA, system design, design patterns, and problem-solving
• Mandatory (Tech skills 2): Proven experience building scalable, reliable, high-performance distributed systems
• Mandatory (Tech skills 3): Hands-on with SQL/NoSQL databases, REST/gRPC APIs, concurrency & async processing
• Mandatory (Tech skills 4): Experience in AWS/GCP, CI/CD pipelines, and observability/monitoring
• Mandatory (Communication): Excellent ability to explain complex technical concepts to varied stakeholders
• Mandatory (Company): Product companies (B2B SAAS preferred)
• Mandatory (Stability): Must have stayed for at least 2 years with each of the previous companies
• Mandatory (Education): B.Tech in computer science from Tier 1, Tier 2 colleges

JOB DESCRIPTION:

Location: mumbai

Mode of Work : 3 days from Office

DSA(Collections, Hash maps, trees, Linkedlist and Arrays, etc), Core Oops concepts(Multithreading, Multi Processing, Polymorphism, Inheritance etc) Annotations in Spring and Spring boot, Java 8 Vital features, database Optimization, Microsevices and Rest API

• Design, develop, and maintain low-latency, high-performance enterprise applications using Core Java (Java 5.0 and above).
• Implement and integrate APIs using Spring Framework and Apache CXF.
• Build microservices-based architecture for scalable and distributed systems.
• Collaborate with cross-functional teams for high/low-level design, development, and deployment of software solutions.
• Optimize performance through efficient multithreading, memory management, and algorithm design.
• Ensure best coding practices, conduct code reviews, and perform unit/integration testing.
• Work with RDBMS (preferably Sybase) for backend data integration.
• Analyze complex business problems and deliver innovative technology solutions in the financial/trading domain.
• Work in Unix/Linux environments for deployment and troubleshooting.

Required Skills & Experience:

• 3– 7 years of strong hands-on experience in Core Java, Spring boot, microservices, data structures.
• Deep understanding of Object-Oriented Programming (OOP), data structures, algorithms, and design patterns.
• Proven experience with Spring, CXF, and REST/SOAP web services.
• Solid understanding of microservices architecture and distributed systems.
• Experience working with Sybase or other relational databases.
• Expertise in multithreading, concurrency, and high-throughput server-side development.
• Exposure to capital markets, sales & trading platforms, or similar financial services applications.
• Good working knowledge of Unix/Linux environments.
• Experience in solution architecture and design documentation is a strong plus.
• Strong problem-solving skills, analytical thinking, and a proactive attitude.
• Excellent communication and interpersonal skills to work effectively with global teams.

Preferred Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
• Previous experience in investment banking, capital markets, or financial technology domains.

 For more details:

Website: www.wissen.com

Wissen Thought leadership : https://www.wissen.com/articles/

LinkedIn: Wissen Technology

What we Require

We are recruiting technical experts with the following core skills and hands-on experience on

Mandatory skills : Core java, Microservices, AWS/Azure/GCP, Spring, Spring Boot

Hands on experience on : Kafka , Redis ,SQL, Docker, Kubernetes

Expert proficiency in designing both producer and consumer types of Rest services.

Expert proficiency in Unit testing and Code Quality tools.

Expert proficiency in ensuring code coverage.

Expert proficiency in understanding High-Level Design and translating that to Low-Level design

Hands-on experience working with no-SQL databases.

Experience working in an Agile development process - Scrum.

Experience working closely with engineers and software cultures.

Ability to think at a high level about product strategy and customer journeys.

Ability to produce low level design considering the paradigm that journeys will be extensible in the future and translate that into components that can be easily extended and reused.

Excellent communication skills to clearly articulate design decisions.

Job Description:

We are looking for a highly experienced Java Developer with expertise in Spring Boot and Microservices architecture. The ideal candidate will have 4+ years of experience in building scalable, high-performance applications.

Key Responsibilities:

• Develop and maintain Java-based applications using Spring Boot and Microservices.
• Create and implement RESTful APIs and integrate with third-party services.
• Design and build scalable, resilient microservices.
• Perform code reviews and optimize applications for performance and security.
• Deploy and manage applications on cloud platforms (AWS, Azure, or GCP).
• Implement CI/CD pipelines for continuous integration and deployment.
• Diagnose and resolve technical issues and production bugs.

Required Skills:

•  Java 8+ or 11+ (strong proficiency)
•  Spring Boot, Spring MVC, Spring Security
•  Microservices architecture and distributed systems
•  RESTful APIs and API gateways
•  SQL and NoSQL databases (PostgreSQL, MongoDB, etc.)
•  Cloud platforms (AWS, Azure, or GCP)
•  Containerization (Docker, Kubernetes)
•  CI/CD pipelines (Jenkins, GitLab CI)
•  Message brokers (Kafka, RabbitMQ)

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.

🛠️ 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

🎯 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

As a Backend Engineer you will be responsible for creating REST APIs which are used to drive the User Interface. Given the nature of the application, these APIs need to be very efficient and high performing. This requires optimizing queries for faster execution and introducing database changes that may be required. We are looking for individuals with great attention to detail, who are genuine, confident, committed and not only passionate about technology, but excited to work in a fun and friendly start-up environment. The ideal candidate will be passionate about technology and GETTING IT DONE.

Responsibilities:

• Develop, test, implement and maintain application software
• Take part in software and architectural development activities
• Debug application issues and helping support respond to client queries
• Participate in application development meetings
• Provide accurate estimates, clearly communicate status of tasks and identification of risks
• Commitment to accomplishing the task at hand and identify the fastest and most reliable way to solve a problem
• Performance tuning of application code at different service levels
• Interact with customers of the application and help address issues reported

Requirements:

• Bachelor's degree in Computer Science or equivalent
• 3+ years of experience with Java and Spring frameworks.
• Having good knowledge in a scripting language like python is a plus
• Experience with Spring and Hibernate/ ORM
• Understanding of relational database and normal forms
• Understanding of NoSQL / RDBMS (Mongo or Postgres) and ability to write optimized and high performing queries
• Strong understanding of Java concurrency, concurrency patterns, experience building thread safe code
• Experience building RESTful web services
• Strong written and verbal communication skills
• Strong interpersonal skills and time management skills
• Strong problem solving and analytical skills
• Experience with GIT as a VCS, Unix based systems
• Experience with NoSQL Database is a plus
• Following are a set of 'good to have' skills React AWS Bitbucket, JIRA

• Java – Spring, Hibernate, Data Structures & Algorithms
  • Knowledge on a Database system.
  3+ years of experience in software development.

Preferably BE/B-Tech engineering degree, but not a must.
• 3 years’ experience developing server-side Java – Spring, Hibernate and REST
• Full-SDLC cycle, with large-scale live roll-out participation as a developer.
• Expert understanding of the object-oriented design and programming concepts
• Good understanding of relational and non-relational database/datastores/caches best practices and challenges
• Have a passion for quality and writing clean, solid, readable code that scales and performs well
• Proficient in Git and familiarity with continuous integration
• A team player who values collaboration, innovation, and inclusion
• Comfortable working in an Agile environment
• Strong verbal and written communication skills