SDE 1 - Backend Developer Java / Node.js

JOB DESCRIPTION

Experience: 10+ years

Wissen Technology is now hiring for a Senior 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. - 10+ 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.

🚀 We’re Hiring: Node.js Developer (5+ Years Experience) | Walk-In Interview | Gurugram

Are you a passionate Node.js Developer looking for your next big opportunity? Join a fast-growing team where your expertise will directly impact scalable and high-performance applications.

Location: Gurugram

Experience Required: 5+ Years

Interview Mode: Walk-In Interview

Employment Type: Full-Time

Key Responsibilities:

• Develop and maintain scalable backend applications using Node.js

• Design and implement RESTful APIs and microservices

• Work with databases such as MongoDB, MySQL, or PostgreSQL

• Collaborate with frontend developers, product managers, and stakeholders

• Optimize applications for maximum speed, scalability, and security

• Troubleshoot, debug, and enhance existing systems

Required Skills:

• Strong hands-on experience with Node.js and Express.js

• Experience with REST APIs and microservices architecture

• Knowledge of MongoDB or other relational/non-relational databases

• Understanding of asynchronous programming and event-driven architecture

• Familiarity with Git and version control

• Experience with cloud platforms (AWS/Azure/GCP) is a plus

Eligibility:

• Minimum 5 years of relevant Node.js development experience

• Strong problem-solving and debugging skills

• Immediate joiners or short notice candidates preferred

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)

Responsibilities:

We’re looking for someone who is enthusiastic, comfortable with uncertainty, flexible, great with people and isn’t afraid to roll up their sleeves and get their hands dirty. Every day is an opportunity to bring your vision to life, and to expand, learn, and grow. No idea is left unconsidered. No voice is left unheard.

• Supporting system design, development and maintenance
• Taking responsibility for personal technical quality standards within the team
• Assisting in defining structured practices, especially in source code management, building and deployment
• Optimising applications for maximum speed and scalability
• 2-6 years of experience

Skills

NodeJs

Requirements

• 2+ years of experience in the Development of JAVA technology.
• Strong Java Basics
• Linux
• SpringBoot or Spring MVC
• Hands-on experience in Relational Databases (SQL query or Hibernate) + Mongo (JSON parsing)
• Proficient in REST API development
• Messaging Queue (RabitMQ or Kafka)
• Microservices
• Java 8
• Any Caching Mechanism
• Good at problem-solving

Good to Have Skills:

• 2+ years of experience in using Java/J2EE tech stacks
• Good understanding of data structures and algorithms.
• Excellent analytical and problem-solving skills.
• Ability to work in a fast-paced internet start-up environment.
• Experience in technical mentorship/coaching is highly desirable.
• Understanding AI/ML algorithms is a plus.

Hello ,

Greetings from Talentika !!

we are having a job vacancy for Java Developer Along with the Skills

Java, Microservices, Kubernetes, AWS/Azure, devops background .

Best Regards,

Priya.

• Well versed in Core Java, OOPs concepts, collections, multi-threading, concurrency, lambdas, and streams.
• Hands-on knowledge of Spring Core, MVC, JPA, Security, transaction
• Working knowledge of REST API designing as well as development, using Spring.
• Exposure to Spring Boot, Docker, Kubernetes, OpenShift for the microservices environment.
• Savvy with SQL and database concepts.
• Ability to use frameworks like JUnit, Mockito, etc., for implementing unit testing.
• Sound understanding of code versioning tools, such as Git/bit bucket with Maven.
• Should have worked in a CI/CD environment with TeamCity/Jenkins.

General Accountabilities/Job Responsibilities

• Participation in the requirements analysis, design, development and testing of applications.
• The candidate is expected to write code himself/herself.
• The candidate is expected to write high level code, code review, unit testing and deployment.
• Practical application of design principles with a focus on the user experience, usability, template
• designs, cross browser issues and client server concepts.
• Contributes to the development of project estimates, scheduling, and deliverables.
• Works closely with QA team to determine testing requirements to ensure full coverage and best
• quality of product.
• There is also the opportunity to mentor and guide junior team members in excelling their jobs.

Job Specifications

• BE/B. Tech. Computer Science or MCA from a reputed University.
• 3 -12 Years of experience in software development, with emphasis on JAVA/J2EE Server side programming.
• Hands on experience in Core Java, Multithreading, RMI, Socket programing,
• JDBC, NIO, webservices and Design patterns.
• Should have Knowledge of distributed system, distributed caching, messaging frameworks,
• ESB etc.
• Knowledge of Linux operating system and PostgreSQL/MySQL/MongoDB/Cassandra database is essential.
• Additionally, knowledge of HBase, Hadoop and Hive are desirable.
• Familiarity with message queue systems and AMQP and Kafka is desirable.
• Should have experience as a participant in Agile methodologies.
• Should have excellent written and verbal communication skills and presentation skills.
• This is not a Fullstack requirement, we are purely looking out for Backend resources.