
skills needed:
java
springboot
microservices
kafka/rabbitmq
jpa

About R Systems International
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About the Role
We are looking for a Senior Backend Engineer to join our core engineering team and help build high-
throughput, low-latency services that power real-time trading at scale. What We’re Looking For
You are someone who has built backend systems in a regulated, high-stakes environment — ideally fintech, brokerage, payments, or banking. You think in terms of system reliability, data correctness, and operational
excellence. You take ownership of services end-to-end: from design and implementation through deployment, monitoring, and incident response. You communicate clearly, make pragmatic trade-offs, and hold yourself and
your peers to a high engineering bar. What You’ll Do
• Design, build, and own backend microservices for a real-time trading platform — from API contracts
through to production observability. • Work with databases, caches, and event-driven architectures to ensure high availability and data
consistency across distributed systems. • Build integrations with third-party financial services — clearing, settlement, identity verification, and
payment rails. • Define and enforce engineering standards — code reviews, testing strategies, API design conventions, and incident response processes. • Collaborate with product, design, and cross-functional teams to translate business requirements into
well-scoped technical deliverables. • Participate in on-call rotations and own production reliability for the services you build. • Mentor junior engineers and contribute to a culture of technical excellence and continuous improvement. Must-Have
• 5+ years backend engineering experience with Golang and Java in production. • Strong experience with PostgreSQL, Redis, and event-driven messaging (Kafka, NATS, or RabbitMQ). • Experience building and maintaining REST/gRPC APIs at scale with proper error handling, rate limiting, and versioning. • Understanding of financial systems — ledgers, reconciliation, order lifecycle, or payment processing.
• Experience with microservices architecture, API gateways, and service-to-service communication
patterns. • Familiarity with CI/CD pipelines, containerization (Docker/Kubernetes), and cloud infrastructure (AWS or
GCP). • Strong debugging and incident-response skills in distributed systems. Nice-to-Have
• Prior experience at a brokerage, wealth-tech, neo-bank, or payments company. • Experience with clearing broker integrations or introducing broker models. • Knowledge of compliance and regulatory requirements for cross-border financial products. • Experience with search infrastructure (Typesense, Elasticsearch). • Background in performance engineering — profiling, load testing, and latency optimization. Tech Stack
Languages Golang (primary), Java; Python (analytics/scripting)
Databases PostgreSQL, Redis, Typesense
Messaging Kafka, NATS, SSE / WebSocket
Infrastructure Docker, Kubernetes, AWS/GCP, Terraform
Integrations Clearing broker APIs, KYC providers, payment gateways
Observability Datadog / Grafana, PagerDuty, structured logging (ELK)
Experience Required: 5-7 Years
No. of vacancies: 2
Job Type: Full Time
Vacancy Role: WFO
Job Category: Development
Job Description
We are looking for an experienced Senior Node.js Developer to join our development team. The ideal candidate will have a passion for backend development, expertise in building scalable applications, and a deep understanding of server-side logic. You’ll work with a team of talented engineers to develop improve, and scale our backend systems.
Roles & Responsibilities
- Backend Development: Design and implement APIs, web services, and backend systems usingNode.js.
- Database Management: Develop and optimize database solutions, ensuring data consistency, integrity, and security.
- Collaboration: Work closely with frontend developers, designers, and other team members to create a cohesive product.
- Testing & Debugging: Write unit tests, perform debugging, and ensure the codebase meets quality standards.
- Scalability: Ensure the application is scalable, maintainable, and performs well under high traffic.
- Code Review: Participate in code reviews, share feedback, and promote best practices for coding.
- Documentation: Maintain clear, comprehensive documentation for system architecture, APIs, and codebase.
Qualifications
- Bachelor’s degree in Computer Science, Engineering, or a related field.
- Experience: 5+ years of experience in backend development with Node.js.
- Proficiency in JavaScript and ES6+ features.
- Experience with RESTful and/or GraphQL API design.
- Knowledge of frameworks like Express.js or Koa.
- Familiarity with database technologies(e.g., MongoDB, MySQL, PostgreSQL).
- Understanding of containerization (Docker) and cloud services(AWS, GCP). Tools: Proficiency in Git, CI/CD pipelines, and other dev tools.
- other Skills: Strong problem-solving skills, ability to work independently, excellent communication skills.
- Design and Develop: Architect, design, and implement high-performance Java-based backend services and applications.
- Code Quality: Write clean, efficient, and well-documented code following industry best practices and coding standards.
- Technical Leadership: Provide technical guidance and mentorship to junior developers, promoting best practices and fostering a collaborative environment.
- Collaboration: Work closely with frontend developers, product managers, and other stakeholders to understand requirements and deliver robust solutions.
- Performance Optimization: Identify and resolve performance bottlenecks and scalability issues.
- Testing: Implement comprehensive testing strategies, including unit tests, integration tests, and end-to-end tests.
- Continuous Improvement: Stay current with the latest industry trends, technologies, and best practices in Java/Golang development, and continuously improve our development processes.
Knowledge of REST API, XML and RESTFUL web services
Working knowledge on SQL, JQuery, web services, Eclipse IDE would be a plus
LogiNext is looking for a technically savvy and experienced senior developer to lead development efforts. You will help the team grow in size and skills, optimizing their code while working on your own. You will design, and develop products that exceed client expectations in terms of value and benefit. You will collaborate on scalability issues involving access to massive amounts of data and information.
You have hands-on experience in building secure, high-performing and scalable systems in Java. Your design intuition inclines toward usability, elegance and simplicity. You are biased towards open-source tools and existing frameworks. You have successfully shipped applications with a beautiful front-end and intelligent backend. You have demonstrated strong interpersonal and communication skills.
Responsibilities
Design and development efforts for high-volume, low-latency applications for real-time event based systems Deliver high-availability and high-performance platform using microservices architecture Identify bottlenecks and inefficiencies in code, and devise solutions to production and non-production issues Keep an eye out for open source projects and technology trends that can be introduced in the products Transform business functionalities and production specifications into technical requirements and low level design Be hands-on, adopt a practical approach to software and technology Work with product management and other teams to build highly scalable products
Requirements
Bachelor’s degree in Computer Science, Information Technology or a related field 0 to 1 years of design and development experience in scalable and distributed enterprise applications using Java/J2EE, JPA, Spring framework and RESTful web services Excellent coding skills in Java Experience in managing, implementing and optimizing big data stores such as MySQL, MongoDB, Elasticsearch Experience in deploying applications and using various managed services provided by cloud platforms (AWS, Azure) Experience in front-end technologies HTML5, CSS3, jQuery, AngularJS and D3.js is preferred Strong foundation in computer science, with strong competencies in data structures, algorithms and software design Proven ability to drive large scale projects with deep understanding of Agile SDLC, high collaboration and leadership
Job ID : LK0601
Java Developer JD;
- 2-7 years of Experience
- Java 8
- Spring boot
- API development
- MVC architecture
- web services
- OOPS
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:
• Bachelor’s or Master’s degree in Engineering from premier institutes preferred
• 8+ years of experience in software design, development & architecture
owners, business analysts and team members to analyse business requirements and proposed
solutions. A highly motivated and enthusiastic to join our Core Technology team and make a
difference.
Must-Have Skills:
• Candidate should have basic experience in Core Java and Advance Java design patterns
• Candidate should have basic experience in Advance Java frameworks – Spring, Hibernate,
JSP, Servlet.
• Good understanding of MAVEN & SVN is a must.
• Front end technologies knowledge is required to communicate with the web development
team. JavaScript, JQuery, AJAX, JSON.
• Collaborating with other teams. Excellent problem solving, debugging, design and debugging
skills required.
Good to Have Skills:
• Have good interpersonal and communication skills.
• E-commerce domain knowledge will be an add-on.
• Knowledge in API Design and docker.
• Knowledge of Agile methodologies
• Knowledge of Unit testing
Primary Responsibilities:
• Work closely with Tech Leads, Architects, Project Manager / Onsite Leads.
• Understand/apply reusable code design, leverage application architecture/framework
capabilities and functionality, and design/develop solutions that are highly reliable, scalable,
and perform to meet business-defined service levels.
• Contribute to the technical code and design documentation.
• Conduct code reviews and ensuring quality solutions are built and tested.
• Provide production support and issue triage for products.
Job brief
We are looking for a Java Developer with experience in building high-performing, scalable, enterprise-grade applications.
You will be part of a talented software team that works on mission-critical applications. Java developer roles and responsibilities include managing Java/Java EE application development while providing expertise in the full software development lifecycle, from concept and design to testing.
Java developer responsibilities include designing, developing and delivering high-volume, low-latency applications for mission-critical systems.
Responsibilities
- Contribute in all phases of the development lifecycle
- Write well designed, testable, efficient code
- Ensure designs are in compliance with specifications
- Prepare and produce releases of software components
- Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review
Requirements
- BS/MS degree in Computer Science, Engineering or a related subject
- Proven hands-on Software Development experience
- Proven working experience in Java development
- Hands on experience in designing and developing applications using Java EE platforms
- Object Oriented analysis and design using common design patterns.
- Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management etc)
- Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
- Experience in the Spring Framework
- Experience as a Sun Certified Java Developer
- Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT, Spring MVC)
- Experience with test-driven development










