Senior Java Developer

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:

• Experience - 4+ 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.

Role: Senior Software Engineer (SDE III) – AI & Backend

Location: Bangalore

Experience: 5-8 Years

Notice: Immediate – 15 Days

Work Mode: Work From Office

Type: Contract to Hire (CTH)

Role Overview

We are looking for a Senior Software Engineer with strong expertise in backend development and AI systems. You will build scalable platforms, AI-powered agents, and real-time voice applications.

What You’ll Do

● Design and develop scalable backend services using Python

● Build microservices, RESTful APIs, and event-driven systems

● Develop AI-powered agents using LLM frameworks and multi-agent systems

● Work on voice systems using STT/TTS and real-time streaming architectures

● Integrate APIs, vector databases, and RAG-based systems

● Collaborate with cross-functional teams and mentor junior engineers

What We’re Looking For

● 5+ years of experience in software development

● Strong proficiency in Python.

● Experience with microservices and distributed systems

● Hands-on experience with LLMs and agent frameworks (LangChain, AutoGen, etc.)

● Familiarity with vector DBs, embeddings, and cloud platforms (AWS/GCP/Azure)

● Good communication skills and ownership mindset

Nice to Have

● Experience with voice systems (STT/TTS) and real-time architecture

● Exposure to MCP or similar frameworks

● Experience building AI copilots or multi-modal systems

Xoxoday is looking for a candidate who has a strong background in the design and implementation of scalable architecture and a good understanding of Algorithms, Data structures, and design patterns. Candidates must be ready to learn new tools, languages, and technologies

Basic Qualifications:

• At least 4 -7 years of experience as a software developer.
• At Least 3 years of experience in .net core C#, aws stack, ms sql server, mvc, nodejs experience is a plus
• Strong working knowledge in distributed event-driven messaging architecture/platform
• Strong knowledge in data access layer especially ability to work with stored procedure
• Established and stimulated software development standards and processes along with best practices for delivery of scalable and high-quality software.
• Production experience with AWS stack
• Fluent English speaker

Preferred Qualifications:

• Experience working with OOP languages.
• Experience designing and developing Microservices and SOA.
• Experience working with AWS Kinesis, Lambda, SQS, S3, ElastiCache, ElasticSearch, Kubernetes, EventBridge, RDS, CloudWatch, APIGateway
• Experience designing and building high-performance scalable web services.
• Experience in REST API design and implementation.
• Experience in unit testing, test automation, and continuous delivery.
• Experience with stream-processing and message-broker software.

Nice to have:

• Experience working with distributed teams.
• Ability to work independently and as part of a team.
• Ability to work quickly toward tight deadlines, and make smart tradeoffs between speed, accuracy, and maintainability.
• Bachelor's or Master's degree in computer science (or equivalent professional experience).

A wholesome opportunity in a fast-paced environment that will enable you to juggle between concepts, yet maintain the quality of content, interact, and share your ideas and have loads of learning while at work. Work with a team of highly talented young professionals and enjoy the benefits of being at Xoxoday.

Xoxoday is a rapidly growing fintech SaaS firm that propels business growth while focusing on human motivation. Backed by Giift and Apis Partners Growth Fund II, Xoxoday offers a suite of three products - Plum, Empuls, and Compass. Xoxoday works with more than 2000 clients across 10+ countries and over 2.5 million users. Headquartered in Bengaluru, Xoxoday is a 300+ strong team with four global offices in San Francisco, Dublin, Singapore, New Delhi.

We look forward to connecting with you. As you may take time to review this opportunity, we will wait for a reasonable time of around 3-5 days before we screen the collected applications and start lining up job discussions with the hiring manager. We however assure you that we will attempt to maintain a reasonable time window for successfully closing this requirement. The candidates will be kept informed and updated on the feedback and application status.

• Drive development and delivery of top notch technology solutions to clients efficiently.
• Lead development of implementation plan, logic and modules to embed in client solutions and client discussion ready documents /presentations.
• Lead in designing, implementing, maintaining and updating applications that are often high-volume and low-latency, required for mission critical systems.
• Lead in refining and improving system stability by continuously refactoring and measuring performance.
• Drive development of actionable, clean, maintainable, testable, reusable, extensible codes, including standardization and automation of processes.
• Provide technical and functional guidance to team members through expert knowledge and hands-on support.
• Manage projects, resource utilization, time schedules and deliveries to clients.
• Proactively drive discussions with stakeholders to understand their business requirements, business context and guide team to provide robust actional solutions.
• Effectively engage with stakeholders – create and nurture and deepen relationships. 
• Ensure positive & creative work-environment, culture of collaborations, speak-up, high level of energy & enthusiasm, curiosity to learn and continuous improvement.
• Inspire, engage, motivate and provide constructive feedback to team members to develop their technical & soft skills and fully support their development aspirations.
• Drive researching and conceptualizing solution approaches, new techniques or solution frameworks and author high quality discussion papers.

Qualifications, Skills and Experiences

• BE / BTech / ME / M Tech in engineering or MCA or similar relevant field.
• 2 to 17 years (Junior, Intermediate, Senior Role & we have multiple openings)of relevant hands-on experience and excellent knowledge of Java, Python, SQL, Relational Databases, DB schema or ORM technologies.
• Excellent knowledge and experience of building applications, platforms and services in Java, Python and MS SQL or at least two of them.
• 5 + years of experience of managing projects, team and stakeholders.
• Knowledge and experience of agile methodologies.
• Excellent communication and inter-personal skills.
• Experience of working in a fast-paced environment and make quality decisions in moderately to high ambiguous work environment.
• Previous work experience in financial services, especially, capital markets is preferred.

Software Engineer, Low-Latency Systems

• Employment Type: Full-time
• Experience Level: senior-level (7–10 years)

About the Role

We are hiring a Software Engineer, Low-Latency Systems to design and optimize the core infrastructure powering our algorithmic trading systems. In this role, you will work on latency-critical execution paths where nanoseconds, cache lines, memory layout, and network behavior matter.

This is a hands-on engineering position for someone who enjoys building high-performance systems and reasoning deeply about correctness, throughput, and tail latency. Prior trading domain experience is helpful but not required—we value engineering depth and systems thinking above all else.

What You’ll Do (Responsibilities)

• Build Core Infrastructure: Design, develop, and maintain low-latency components including order routing, market data handling, and execution pipelines.
• Optimize Performance: Profile and optimize critical code paths to minimize throughput and tail latency.
• Collaborate Across Teams: Work closely with quant and trading teams to translate complex strategy requirements into highly efficient infrastructure primitives.
• Drive System Design: Contribute to architectural decisions around threading models, memory layout, and network stack configurations.
• Ensure Reliability: Improve observability and operational performance across trading infrastructure. Participate in on-call rotations, incident response, and post-mortems to keep systems running smoothly.

What We’re Looking For (Requirements)

• Experience: 7 to 10 years of professional experience in systems engineering, with a demonstrable focus on low-latency systems or high-performance computing (HPC).
• Language Proficiency: Strong, production-level proficiency in Rust and/or C++.
• Systems Depth: Comfort reasoning about memory management, lock-free data structures, compiler behavior, and CPU-level performance.
• Tooling: Experience using Linux performance tooling such as perf, flamegraphs, strace, or similar tools.
• Networking Fundamentals: Solid understanding of network stack behavior, including TCP, UDP, multicast, and kernel bypass.
• Problem Solving: Ability to debug complex production issues and optimize systems under real-world constraints.

Nice to Have (Bonus Points)

• Prior exposure to trading systems, market data feeds, or exchange connectivity.
• Familiarity with financial market protocols (e.g., FIX, ITCH, OUCH).
• Experience with low-latency networking technologies like DPDK, RDMA, or kernel bypass.
• Familiarity with co-location environments and latency-sensitive infrastructure.

Culture & Fit

We are looking for an engineer who takes ownership, thrives in ambiguous and fast-moving environments, and holds an incredibly high bar for correctness and performance. If you love drilling down into the lowest levels of software to squeeze out maximum efficiency, we want to hear from you.

• Experience in Core Java, CXF, Spring.
• Experience in spring boot, microservices.
• Extensive experience in developing enterprise-scale n-tier applications for the financial domain. 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, preferably Sybase database
• Good knowledge of multi-threading and high volume server side development
• Experience in sales and trading platforms in investment banking/capital markets
• Basic working knowledge of Unix/Linux
• Excellent problem solving and coding skills in Java
• Strong interpersonal, communication and analytical skills.
• Should have the ability to express their design ideas and thoughts.

Key Responsibilities

• Frontend Development: Designing and building responsive, interactive user interfaces using React.js, HTML5, CSS3, and modern JavaScript (ES6+).
• Backend Development: Developing robust, scalable server-side applications and microservices using Java and the Spring Boot framework.
• API Integration: Creating and consuming RESTful APIs to ensure seamless communication between the React frontend and the Java backend.
• Database Management: Designing and optimizing database schemas and queries using SQL (e.g., MySQL, PostgreSQL, Oracle) or NoSQL (e.g., MongoDB) databases.
• State Management: Managing application state in React using tools like Redux, Hooks, or Context API.
• Testing & Quality Assurance: Writing unit and integration tests using frameworks such as JUnit for backend and Jest or React Testing Library for frontend.
• DevOps & Deployment: Collaborating on CI/CD pipelines and using containerization tools like Docker and Kubernetes for application deployment. 
• Indeed
•  +14

Required Skills & Qualifications

• Core Technical Skills:
• Deep proficiency in Java (8+) and the Spring ecosystem (Spring Boot, Spring Security, Spring Data JPA).
• Expertise in React.js workflows, component-based architecture, and hooks.
• Strong understanding of Microservices architecture and cloud platforms (AWS, Azure, or GCP).
• Experience & Education:
• Typically requires a Bachelor's degree in Computer Science or a related field.
• Proven experience (often 1–5+ years depending on seniority) in full-stack development.
• Tools: Version control systems like Git, build tools like Maven or Gradle, and Agile project management tools like Jira. 
• Indeed
•  +13

Typical Salary Ranges (India)

• Freshers: ₹3.8 Lakh to ₹12 Lakh per year.
• Experienced (5+ years): ₹18 Lakh to ₹30 Lakh+ per year.
• Average (General): Approximately ₹29 Lakh per year for high-demand specialized roles. 

About Company:

Nomiso is a product and services engineering company. We are a team of Software Engineers, Architects, Managers, and Cloud Experts with expertise in Technology and Delivery Management. 

Our mission is to Empower and Enhance the lives of our customers, through efficient solutions for their complex business problems. 

At Nomiso we encourage entrepreneurial spirit - to learn, grow and improve. A great workplace, thrives on ideas and opportunities. That is a part of our DNA. We’re in pursuit of colleagues who share similar passions, are nimble and thrive when challenged. We offer a positive, stimulating and fun environment – with opportunities to grow, a fast-paced approach to innovation, and a place where your views are valued and encouraged.

We invite you to push your boundaries and join us in fulfilling your career aspirations!

What You Can Expect from Us:

Here at NomiSo, we work hard to provide our team with the best opportunities to grow their careers.  You can expect to be a pioneer of ideas, a student of innovation, and a leader of thought. Innovation and thought leadership is at the center of everything we do, at all levels of the company. Let’s make your career great!

Responsibilities:

• Create, deploy, monitor, and maintain high performance and scalable microservices in the production.
• Design/develop Restful Services, data analysis, troubleshoot and resolve complex issues.
• Take end to end ownership for complex technical projects from planning through execution.
• Build, optimize, and manage ad solution Platform for the enterprise level. 
• Perform code review and manage technical debt
• Handle release deployments and production issues

Required Skills: 

• Overall 8+ years of experience in application development using Java with creating and deploying microservices using the Spring Boot framework.
• Strong experience in Maven.
• Good experience in unit(Junit) and integration testing.
• Experience in Microservices is a must.
• Experience in designing and developing REST based services / Microservice development.
• Experience with delivering projects in an agile environment using SCRUM methodologies.
• Candidate should have good communication skills (written and verbal)
• Excellent analytical and problem solving skills
• Any one of these database Mongo, Maria, RMQ, Postgres, or other NoSQL servers
• Experience in AWS and CI/CD

Good to have:

• Experience using container management tools such as Kubernetes, Docker and Rancher.

Experience:

The candidate should have about 1+ years of experience with design and development in Java/Scala. Experience in algorithm, data-structure, database is mandatory.

Required Skills:

1. Java or Scala
2. Extensive experience in developing web applications. Should possess good Oops knowledge and be aware of enterprise application design patterns.
3. Should have the ability to analyze, design, develop and test complexity of spark job.
4. Basic working knowledge of Unix/Linux.

Good To have: -

1. Python
2. Distributed Computing