OPT Principal Full Stack Engineer Jobs
Principal Full Stack Engineer roles attract strong OPT sponsorship because employers filing H-1B visa and E-3 visa petitions need senior engineers who can own architecture decisions, not just execute tickets. Your 12-month standard OPT window, or 24-month STEM extension if your degree qualifies, gives you enough runway to prove that value.
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Full-Stack Java Engineer
The Role
UST is seeking a Full-Stack Java Engineer to develop, modernize, and support enterprise applications across Java technology stacks. The role supports application migration, modernization, integration, and production support initiatives while working closely with business, infrastructure, and project teams.
What You’ll Do
-
Develop and maintain enterprise applications using Java, Spring Boot, React.js, and microservices.
-
Build and enhance web applications using JavaScript, HTML5, and CSS.
-
Design, develop, and support REST APIs, integrations, and reusable application components.
-
Participate in solution design, code reviews, architecture discussions, and technical planning.
-
Assess and modernize legacy applications.
-
Support application, cloud, and data center migration initiatives.
-
Analyze dependencies, interfaces, and technical risks.
-
Improve application performance, scalability, and security.
-
Develop and optimize SQL queries, stored procedures, and database objects.
-
Support SQL Server, Oracle, DB2, MongoDB, Snowflake, and MySQL environments.
-
Develop integrations using REST APIs, Kafka, messaging, and file-based interfaces.
-
Provide Level 3 application support and incident resolution.
-
Perform root cause analysis and implement long-term fixes.
-
Support CI/CD pipelines, deployments, Kubernetes management, and release activities.
-
Implement monitoring, logging, and automation solutions.
This position description identifies the responsibilities and tasks typically associated with the performance of the position. Other relevant essential functions may be required.
What You Need
Required
-
Java, J2EE, Spring Boot, and Spring MVC.
-
Microservices architecture.
-
React.js, JavaScript, TypeScript, HTML5, and CSS.
-
REST APIs, JSON, and XML.
-
Kafka and event-driven architecture.
-
AWS cloud services (EC2, ECS/EKS, Lambda, S3, RDS, IAM, and CloudWatch).
-
Snowflake, MongoDB, Oracle, and PostgreSQL/MySQL.
-
Cloud migration and application modernization.
-
SSO, OAuth2, OpenID Connect, and SAML.
-
Large-scale data processing and reporting automation.
-
Docker and Kubernetes.
-
Git, Maven, and Jenkins/GitHub Actions.
-
Monitoring and logging tools (Splunk, CloudWatch, Datadog, etc.).
-
Strong troubleshooting, analytical, problem-solving, and communication skills.
Preferred
-
Experience with application migration and modernization programs.
-
Experience supporting healthcare, insurance, or benefits administration platforms.
-
Knowledge of cloud-native and containerized architectures.
-
Bachelor’s degree in Computer Science, Engineering, or a related field.
-
5+ years of enterprise application development and support experience.
Location & Compensation
Compensation can differ depending on factors including but not limited to the specific office location, role, skill set, education, and level of experience. UST provides a reasonable range of compensation for roles that may be hired in various U.S. markets as set forth below.
Role Location: Atlanta, GA
Compensation Range: $68,000 - $102,000
Who We Are
Since 1999, UST has worked side by side with the world’s best companies to make a powerful impact through transformation. Headquartered in the United States, UST is powered by technology, driven by AI, inspired by people, and led by our purpose, we partner with our clients from design to operation. Our AI-driven digital solutions, proprietary platforms, engineering, R&D, products, and innovation ecosystem turn core challenges into impactful, disruptive business outcomes. With deep industry knowledge and a future-ready mindset, we infuse expertise, innovation, and agility into our clients’ organizations—delivering measurable value and positive lasting change for them, their customers, and communities around the world. Together, with 30,000+ employees in 30+ countries, we build for boundless impact—touching billions of lives in the process.
Benefits
Full-time, regular employees accrue a minimum of 10 days of paid vacation per year, receive 6 days of paid sick leave each year (pro-rated for new hires throughout the year), 10 paid holidays, and are eligible for paid bereavement leave and jury duty. They are eligible to participate in the Company’s 401(k) Retirement Plan with employer matching. They and their dependents residing in the US are eligible for medical, dental, and vision insurance, as well as the following Company-paid Employee Only benefits: basic life insurance, accidental death and disability insurance, and short- and long-term disability benefits. Regular employees may purchase additional voluntary short-term disability benefits, and participate in a Health Savings Account (HSA) as well as a Flexible Spending Account (FSA) for healthcare, dependent child care, and/or commuting expenses as allowable under IRS guidelines. Benefits offerings vary in Puerto Rico.
Part-time employees receive 6 days of paid sick leave each year (pro-rated for new hires throughout the year) and are eligible to participate in the Company’s 401(k) Retirement Plan with employer matching.
Full-time temporary employees receive 6 days of paid sick leave each year (pro-rated for new hires throughout the year) and are eligible to participate in the Company’s 401(k) program with employer matching. They and their dependents residing in the US are eligible for medical, dental, and vision insurance.
Part-time temporary employees receive 6 days of paid sick leave each year (pro-rated for new hires throughout the year).
All US employees who work in a state or locality with more generous paid sick leave benefits than specified here will receive the benefit of those sick leave laws.
As part of our recruitment process, UST may use AI or automated tools to support activities such as application screening, scheduling, or interview assistance. All hiring decisions are made by our recruitment team. Where applicable law requires it, further notice will be provided separately.
Equal Employment Opportunity Statement
UST is an Equal Opportunity Employer.
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other applicable characteristics protected by law. We will consider qualified applicants with arrest or conviction records in accordance with state and local laws and “fair chance” ordinances.
UST reserves the right to periodically redefine your roles and responsibilities based on the requirements of the organization and/or your performance.
UST
Skills
Java, Spring MVC, Microservices, JavaScript, Issue Analysis, MongoDB, Splunk, Spring Boot, Apache Kafka, AWS IAM, AWS Lambda
Benefits
Compensation range: $68,000.00 to $102,000.00 per year
About UST
UST is a global digital transformation solutions provider. For more than 20 years, UST has worked side by side with the world’s best companies to make a real impact through transformation. Powered by technology, inspired by people and led by purpose, UST partners with their clients from design to operation. With deep domain expertise and a future-proof philosophy, UST embeds innovation and agility into their clients’ organizations. With over 30,000 employees in 30 countries, UST builds for boundless impact—touching billions of lives in the process.
Role description
Full-Stack Java Engineer
The Role
UST is seeking a Full-Stack Java Engineer to develop, modernize, and support enterprise applications across Java technology stacks. The role supports application migration, modernization, integration, and production support initiatives while working closely with business, infrastructure, and project teams.
What You’ll Do
-
Develop and maintain enterprise applications using Java, Spring Boot, React.js, and microservices.
-
Build and enhance web applications using JavaScript, HTML5, and CSS.
-
Design, develop, and support REST APIs, integrations, and reusable application components.
-
Participate in solution design, code reviews, architecture discussions, and technical planning.
-
Assess and modernize legacy applications.
-
Support application, cloud, and data center migration initiatives.
-
Analyze dependencies, interfaces, and technical risks.
-
Improve application performance, scalability, and security.
-
Develop and optimize SQL queries, stored procedures, and database objects.
-
Support SQL Server, Oracle, DB2, MongoDB, Snowflake, and MySQL environments.
-
Develop integrations using REST APIs, Kafka, messaging, and file-based interfaces.
-
Provide Level 3 application support and incident resolution.
-
Perform root cause analysis and implement long-term fixes.
-
Support CI/CD pipelines, deployments, Kubernetes management, and release activities.
-
Implement monitoring, logging, and automation solutions.
This position description identifies the responsibilities and tasks typically associated with the performance of the position. Other relevant essential functions may be required.
What You Need
Required
-
Java, J2EE, Spring Boot, and Spring MVC.
-
Microservices architecture.
-
React.js, JavaScript, TypeScript, HTML5, and CSS.
-
REST APIs, JSON, and XML.
-
Kafka and event-driven architecture.
-
AWS cloud services (EC2, ECS/EKS, Lambda, S3, RDS, IAM, and CloudWatch).
-
Snowflake, MongoDB, Oracle, and PostgreSQL/MySQL.
-
Cloud migration and application modernization.
-
SSO, OAuth2, OpenID Connect, and SAML.
-
Large-scale data processing and reporting automation.
-
Docker and Kubernetes.
-
Git, Maven, and Jenkins/GitHub Actions.
-
Monitoring and logging tools (Splunk, CloudWatch, Datadog, etc.).
-
Strong troubleshooting, analytical, problem-solving, and communication skills.
Preferred
-
Experience with application migration and modernization programs.
-
Experience supporting healthcare, insurance, or benefits administration platforms.
-
Knowledge of cloud-native and containerized architectures.
-
Bachelor’s degree in Computer Science, Engineering, or a related field.
-
5+ years of enterprise application development and support experience.
Location & Compensation
Compensation can differ depending on factors including but not limited to the specific office location, role, skill set, education, and level of experience. UST provides a reasonable range of compensation for roles that may be hired in various U.S. markets as set forth below.
Role Location: Atlanta, GA
Compensation Range: $68,000 - $102,000
Who We Are
Since 1999, UST has worked side by side with the world’s best companies to make a powerful impact through transformation. Headquartered in the United States, UST is powered by technology, driven by AI, inspired by people, and led by our purpose, we partner with our clients from design to operation. Our AI-driven digital solutions, proprietary platforms, engineering, R&D, products, and innovation ecosystem turn core challenges into impactful, disruptive business outcomes. With deep industry knowledge and a future-ready mindset, we infuse expertise, innovation, and agility into our clients’ organizations—delivering measurable value and positive lasting change for them, their customers, and communities around the world. Together, with 30,000+ employees in 30+ countries, we build for boundless impact—touching billions of lives in the process.
Benefits
Full-time, regular employees accrue a minimum of 10 days of paid vacation per year, receive 6 days of paid sick leave each year (pro-rated for new hires throughout the year), 10 paid holidays, and are eligible for paid bereavement leave and jury duty. They are eligible to participate in the Company’s 401(k) Retirement Plan with employer matching. They and their dependents residing in the US are eligible for medical, dental, and vision insurance, as well as the following Company-paid Employee Only benefits: basic life insurance, accidental death and disability insurance, and short- and long-term disability benefits. Regular employees may purchase additional voluntary short-term disability benefits, and participate in a Health Savings Account (HSA) as well as a Flexible Spending Account (FSA) for healthcare, dependent child care, and/or commuting expenses as allowable under IRS guidelines. Benefits offerings vary in Puerto Rico.
Part-time employees receive 6 days of paid sick leave each year (pro-rated for new hires throughout the year) and are eligible to participate in the Company’s 401(k) Retirement Plan with employer matching.
Full-time temporary employees receive 6 days of paid sick leave each year (pro-rated for new hires throughout the year) and are eligible to participate in the Company’s 401(k) program with employer matching. They and their dependents residing in the US are eligible for medical, dental, and vision insurance.
Part-time temporary employees receive 6 days of paid sick leave each year (pro-rated for new hires throughout the year).
All US employees who work in a state or locality with more generous paid sick leave benefits than specified here will receive the benefit of those sick leave laws.
As part of our recruitment process, UST may use AI or automated tools to support activities such as application screening, scheduling, or interview assistance. All hiring decisions are made by our recruitment team. Where applicable law requires it, further notice will be provided separately.
Equal Employment Opportunity Statement
UST is an Equal Opportunity Employer.
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other applicable characteristics protected by law. We will consider qualified applicants with arrest or conviction records in accordance with state and local laws and “fair chance” ordinances.
UST reserves the right to periodically redefine your roles and responsibilities based on the requirements of the organization and/or your performance.
UST
Skills
Java, Spring MVC, Microservices, JavaScript, Issue Analysis, MongoDB, Splunk, Spring Boot, Apache Kafka, AWS IAM, AWS Lambda
Benefits
Compensation range: $68,000.00 to $102,000.00 per year
About UST
UST is a global digital transformation solutions provider. For more than 20 years, UST has worked side by side with the world’s best companies to make a real impact through transformation. Powered by technology, inspired by people and led by purpose, UST partners with their clients from design to operation. With deep domain expertise and a future-proof philosophy, UST embeds innovation and agility into their clients’ organizations. With over 30,000 employees in 30 countries, UST builds for boundless impact—touching billions of lives in the process.
See all 258+ OPT Principal Full Stack Engineer Jobs
Sign up for free to unlock all listings, filter by visa type, and get alerts for new OPT Principal Full Stack Engineer Jobs.
Get Access To All JobsTips for Finding OPT Sponsorship as a Principal Full Stack Engineer
Lead with architecture ownership, not task completion
Principal-level roles require demonstrated ownership of system design decisions. Highlight specific architectural choices you made, their trade-offs, and measurable outcomes. Employers sponsoring at this level need evidence you can lead technical direction, not just contribute to it.
Confirm your degree qualifies for the 24-month STEM extension
Computer Science, Software Engineering, and related degrees listed on the STEM OPT designated degree list qualify for an additional 24 months. Confirm your specific CIP code with your DSO before applying, since eligibility determines how long a sponsoring employer can realistically plan around you.
Target companies with consistent H-1B filing histories
Employers who regularly sponsor H-1B petitions for senior engineers are far more likely to sponsor OPT students at the principal level. Look for companies with multi-year sponsorship track records rather than those filing for the first time under pressure from a hiring need.
Frame your full-stack depth across the entire system lifecycle
Principal engineers are evaluated on breadth and depth across frontend, backend, infrastructure, and observability layers. Articulate how you've owned systems end-to-end, including on-call responsibilities and performance at scale, to differentiate yourself from senior engineers targeting the same roles.
Apply before your OPT expiration gives employers pause
Start your principal-level job search at least four months before your OPT end date. Employers sponsoring at this level still need time to prepare LCA filings and petitions. Arriving late in your authorization window raises logistical concerns that can quietly remove you from consideration.
Use Migrate Mate to filter for OPT-friendly principal engineering roles
Not all job listings indicate sponsorship willingness upfront. Migrate Mate surfaces Principal Full Stack Engineer roles from employers with active sponsorship histories, so you spend time on applications with a realistic path to authorization rather than pursuing roles that will stall at the visa conversation.
Principal Full Stack Engineer OPT: Frequently Asked Questions
Do employers actually sponsor OPT for Principal Full Stack Engineer roles?
Yes, and more consistently than mid-level roles. Principal engineers are harder to replace, which makes the sponsorship investment easier to justify internally. Employers who have already built H-1B sponsorship infrastructure, typically companies with 200 or more employees in engineering, are the most reliable candidates. Migrate Mate lists roles specifically from companies with documented sponsorship histories.
Does a Principal Full Stack Engineer role qualify for the 24-month STEM OPT extension?
It depends on your degree, not the job title. If your bachelor's, master's, or doctoral degree falls under a STEM-designated CIP code, such as Computer Science, Computer Engineering, or Information Systems, you qualify for the extension regardless of your specific job title. Your DSO confirms eligibility and files the I-983 training plan with your employer. The role itself does not need to be classified separately.
What makes a Principal Full Stack Engineer different from a Senior Engineer in the eyes of a visa sponsor?
At the principal level, employers expect you to drive technical strategy across teams, make architecture decisions with cross-functional impact, and mentor other senior engineers. For sponsorship purposes, this distinction matters because USCIS evaluates whether a role constitutes a specialty occupation. A clearly defined principal-level scope, with formal responsibilities and reporting relationships, strengthens the petition considerably compared to a vaguely defined senior role.
Can I switch employers during OPT if I'm working as a Principal Full Stack Engineer?
Yes, but each new employer must be reported to your DSO within 10 days, and the new role must be directly related to your degree field. On standard OPT, you also cannot exceed 90 days of unemployment during your authorization period. On STEM OPT, the limit is 150 days total across the full 36-month window. Moving between employers at the principal level is common, but timeline management matters.
How soon before my OPT ends should I expect an employer to begin H-1B sponsorship?
H-1B cap-subject petitions can only be filed for an October 1 start date, with registration opening in March. If your OPT ends outside that window, your employer may need to bridge the gap using a cap-exempt filing, a change of status strategy, or a different visa category. Raise the timeline question explicitly in the offer stage so both sides can plan. Starting the conversation early is the most important variable.