Staff Performance Engineer – SDET Job Vacancy in Visa Bengaluru, Karnataka – Updated today

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Full Details :
Company Name : Visa
Location : Bengaluru, Karnataka
Position :

Job Description : Company Description
Visa is a world leader in digital payments, facilitating more than 215 billion payments transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories each year. Our mission is to connect the world through the most innovative, convenient, reliable and secure payments network, enabling individuals, businesses and economies to thrive.
When you join Visa, you join a culture of purpose and belonging – where your growth is priority, your identity is embraced, and the work you do matters. We believe that economies that include everyone everywhere, uplift everyone everywhere. Your work will have a direct impact on billions of people around the world – helping unlock financial access to enable the future of money movement.
Join Visa: A Network Working for Everyone.

Job Description
Visa is looking for Staff Performance Engineers, who will help build Open VisaNet, Visa’s Next generation payment processing platform developed on Open Systems, that would fuel growth in electronic payments globally and drive financial inclusion in many parts of the world. Open VisaNet, is the Next Generation VisaNet, will push the envelope of building highly scalable, secure, cost effective and distributed application on commodity hardware using best-in-class technology components. Open VisaNet is one of Visa’s Key initiative that will help Visa support in-country processing solutions and provide Visa an opportunity to move away from Proprietary Mainframe type systems. It is built as a modern distributed architecture based on micro services with goals of five 9’s availability, fault tolerance, horizontal scalability and real time latency for largest scale transaction processing. Open VisaNet leverages state of the art Open Software technologies to achieve these goals on commodity hardware, such as Golang, Scala, Apache Kafka, Apache Spark, Docker, Kubernetes, Aerospike, Elasticsearch etc. and involves collaboration with exceptional group of software engineers, systems performance engineers, security specialists, DevOps engineers, payment experts, infrastructure and solution architects.
Responsibility
Accountable for creating application and infrastructure performance plans/models for a highly scalable, low-latency, highly-available and high-throughput payment processing system
Understand and own component level performance engineering activities, including code review and data flow review
Accountable for conducting performance tuning POCs with application code in the performance lab environment
Design and contribute to performance and resiliency testing and tuning of distributed components.
Coordinate with the Dev / QE / Support / PM teams to review and document requirements.
Evaluate, develop and execute load test tools to simulate workload limits of Visa’s most critical payment applications
Design and conduct tests with complex workloads and data shapes to expose potential bottlenecks and failure points.
Perform root cause analysis for the issues identified.
Analyze metrics and trends to glean opportunities for performance improvements of the application.
Experiment with ways to eliminate issues and present corrective actions, conduct session with developers and architects on the corrections/techniques suggested.
Oversee system performance lifecycle and identify key metrics for performance improvements.
Generate periodic performance engineering reports for architects, developers and PMs to review.
Conduct technical presentations to enable teams on how to improve system and application performance.
Innovate solutions to improve performance engineering effectiveness.
Design and contribute to performance tuning, scalability, reliability and high availability of fault-tolerant distributed components
Ensuring proper documentation and internal publishing of design tradeoffs, code best practices and lessons learned
Support in triaging and troubleshooting of highly distributed services in production environment
Design and develop Performance Engineering aide like profiles, traces or any observability framework
Design and develop Performance best practices and influence non-functional requirements at early stages
Work closely with application development teams to provide technical direction to improve application performance
Mandatory Skillset
Knowledge of at least one language – GoLang, Python or Java. Should be able to code independently
Ability to build Cost Profile for Application based on test results[CPU, Memory, IO and Network]
Ability to profile CPU and Memory consumptions or raw dumps. Familiarity with traces, thread dumps, debug log
Deep Understanding of Performance KPIs and their tradeoffs and patterns
Performance Modelling capability based on Performance Test Numbers for a predefined application Non Functional Requirement
Understanding of Microservices/CGROUP and Namespaces in Linux
Deep Understanding of Linux Memory management
Deep Understanding of IO Subsystem (IO subsystem layers, Type of IOs, Caching, Filesystems, RAID)
Understanding of Compute subsystem with in-depth knowledge of scheduling of process, thread and goroutines/LWT
Understanding of process state, context switches, system calls
Understanding of NW layers – protocols, flow control and congestion control
Some knowledge on Data Center
Create performance test strategy and test cases
Design Chaos test case scenarios and formulate test strategy by identifying failure points

Qualifications

Minimum of 6 years’ hands-on experience in Performance Engineering role
Knowledge of at least one language – GoLang, Python or Java, must be able to code independently
Effective verbal and written communication skills
BS or MS in Computer Science or related degree from recognized university
Previous experience with financial services or payments processing domain is a big plus
Additional Information

Visa has adopted a COVID-19 vaccination policy. As a condition of employment, all employees based in the country where this job is located are required to be fully vaccinated for COVID-19, unless a reasonable accommodation is approved or as otherwise required by law.

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