Software Developer Engineer IV

Fujitsu Careers; Dallas (TX); On-site; USD 166,000 - 236,000; Full time

Job summary

1Finity, a Fujitsu company, is seeking a Lead SDN Applications Engineer to advance the Virtuora Network Controller platform. You will guide architecture, design and development of SDN topologies across Layer0-2, with a strong emphasis on Java/Scala and open source frameworks.

This senior role demands deep experience with OpenDaylight, REST APIs, Kubernetes, and large-scale network management systems, plus hands-on leadership to drive features end-to-end and collaborate with external vendors.

Qualifications

• Minimum of 12 years of Experience in product development of Transport Network management solution – Layer 0 (DWDM), Layer 1 (OTN) and Layer 2 (Packet) technologies
• Expertise in Core Java, Scala, Threads, Collections and Data structures
• Hands-on experience with Open Daylight (ODL) and SDN controller development
• Hands-on experience of various communication protocols such as Netconf, TL1 and modelling tools such as Yang, Json, XML
• Good knowledge with databases Oracle/MySQL/Cassandra
• Exposure to Kubernetes, Docker, HDFS, ElasticSearch, Kafka, Spark and distributed big-data systems
• Expertise in designing and developing REST APIs
• Exposure to messaging frameworks like Kafka and Java related frameworks like OSGI, Spring, Blueprint
• Experience in unit test, continuous integration (CI/CD) frameworks such as Junit, Jenkins, postman
• Familiarity with Git, Gerrit, JIRA, Familiar with Agile/Scrum development methodologies.
• Have demonstrated good technical leadership ability, lead end‑to‑end feature development

Responsibilities

• Lead the SDN applications software functions in SDN Topology and Southbound application functions.
• Lead Layer 0 (DWDM), Layer 1 (OTN) and Layer 2 (Packet) SDN application functions on a SDN controller based Network Management System.
• Participate in requirement analysis, design, development and maintenance of multiple software components of SDN controller to meet customer requirements using innovative technologies.
• Participate in the Open ROADM Multi-Source Agreement forum technical discussions and solve complex service modelling and vendor interoperability challenges.
• Accountable for as-planned execution and quality of the applications developed.
• Issue investigation, status, and resolution during System Test.
• Interface with, monitor progress and evaluate performance of external SW vendors that provide SW for the Platform.
• Candidates for this job should have very strong technical, analytical, modelling, programming skills and be capable of driving features end‑to‑end, technically lead the team and handle multiple tasks simultaneously.

Skills

Java/Scala

OpenDaylight

REST APIs

Kubernetes

Docker

Algorithms & Data Structures

Agile/Scrum

Git/Gerrit/JIRA

CI/CD

Netconf

TL1

Yang/JSON/XML

Postman

OSGi/Spring/Blueprint

Job description

Location Flexibility: Multiple Locations in Country

Posting Start Date: 6/12/26

About 1FINITY

1Finity, a Fujitsu company, is a global provider of communications networks for our connected world. We uniquely combine technological leadership and expertise in open optical and wireless networking, network automation, and applied AI/ML to design, build, operate, and maintain critical digital communications network infrastructure. Collaborating closely with ecosystem partners, we deliver transformative outcomes for service providers and network operators, and enable them to lower TCO, improve network performance, and increase energy efficiency. We’re also a diverse, inclusive, and innovative workplace that achieves together. We offer highly competitive compensation, benefits, and career development opportunities, as well as flexible options for working your way. See what working at 1Finity looks like at https://www.linkedin.com/company/1finity-inc/ . For more information, please visit https://1finity.com/?utm_source=li&utm_medium=soc.

Position

SDN applications Principal Engineer/Senior Engineer

JOB DESCRIPTION

What will you do at Fujitsu?

Virtuora Network Controller (VNC) is the platform for a comprehensive, adaptable, highly modular suite of software products that enable you to build and grow a virtualized, programmable network. VNC software utilizes micro services architecture and leverages open source technologies to provide complete suite of SDN controller functionality, i.e. control, planning and design, operations and management, service fulfillment and assurance functions. We are looking for an experienced lead software engineer who is an expert in Java/Scala as well as possess the skills to transform complex requirements in to extendable software architecture/design and data model.

Responsibilities:

• Lead the SDN applications software functions in SDN Topology and Southbound application functions.
• Lead Layer 0 (DWDM), Layer 1 (OTN) and Layer 2 (Packet) SDN application functions on a SDN controller based Network Management System .
• Participate in requirement analysis, design, development and maintenance of multiple software components of SDN controller to meet customer requirements using innovative technologies.
• Participate in the Open ROADM Multi-Source Agreement forum technical discussions and solve complex service modelling and vendor interoperability challenges.
• Accountable for as-planned execution and quality of the applications developed.
• Issue investigation, status, and resolution during System Test.
• Interface with, monitor progress and evaluate performance of external SW vendors that provide SW for the Platform.
• Candidates for this job should have very strong technical, analytical, modelling, programming skills and be capable of driving features end‑to‑end, technically lead the team and handle multiple tasks simultaneously.

Qualifications:

• Minimum of 12 years of Experience in product development of Transport Network management solution – Layer 0 (DWDM), Layer 1 (OTN) and Layer 2 (Packet) technologies
• Expertise in Core Java, Scala, Threads, Collections and Data structures
• Hands‑on experience with Open Daylight (ODL) and SDN controller development
• Hands‑on experience of various communication protocols such as Netconf, TL1 and modelling tools such as Yang, Json, XML
• Good knowledge with databases Oracle/MySQL/Cassandra
• Experience in at least 2-3 full cycle development of Network Management Systemsproducts
• Exposure to Kubernetes, Docker, HDFS, ElasticSearch, Kafka, Spark and distributed big‑data systems
• Expertise in designing and developing REST APIs
• Exposure to messaging frameworks like Kafka and Java related frameworks like OSGI, Spring, Blueprint
• Experience in unit test, continuous integration (CI/CD) frameworks such as Junit, Jenkins, postman
• Familiarity with Git, Gerrit, JIRA, Familiar with Agile/Scrum development methodologies.
• Have demonstrated good technical leadership ability, lead end‑to‑end feature development

Nice to Have:

• Exposure to graph data structures/database, path computation algorithm implementation like dijkstra, yen

1Finity salaries are aligned to the specific geographic location in which thework is primarily performed. It is not typical for an individual to be hired at or near the top of the range for their role and compensation decisions are dependent on the circumstances of each situation. The pay range for this roletakes into accountthe wide range of factors that areconsidered in making compensation decisions including but not limited to:specific skills,qualifications, experience, andcomparison to otheremployees already in this role.The pay range for this position is estimated at$165,529 to $236,470 USD.Additionally, this role may be eligible for a short-term incentive based on companyresults and individual performance.

As a technology company, 1Finity recognizes that human resources are its mostimportant capital. Tocreate an environment where all employees can work positively andhealthily, both in mind and body, we offer a full range of health, 401K, and other benefits.

At 1Finity, one of our corporate principles is "We respect human rights". This commitment guides the actions of every1Finity Group member and is fundamental to how we operate, both as individuals and as a company. We are proud to be an equal opportunity employer that values diversity and inclusion. Qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. By empowering people, we can unleash our collective strengths to create a better experience for our employees, our customers, and our partners. California Privacy Act: https://www.fujitsu.com/us/Images/CALIFORNIA-CONSUMER-PRIVACY-ACT-NOTICE.pdf