TN Visa Senior Mainframe Developer Jobs
Senior Mainframe Developer roles qualify for TN visa sponsorship under the USMCA's Computer Systems Analyst category, covering COBOL, JCL, and z/OS architecture work. Canadian citizens can apply at the border with a job offer; Mexican citizens go through consular processing. Both nationalities need an employer willing to document the specialty occupation.
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Get Access To All JobsINTRODUCTION
The role is in Quantitative Data Research team which sits within Analytics Research Group. This is a senior level quantitative developer role responsible for application development, including the responsibilities for running and refactoring legacy processes as well as coordinating the work of the other developers. This individual will work closely with colleagues within ISD Research and Product Management as well as others with ISD Data Operations, and Technology.
KEY RESPONSIBILITIES
- Design, develop, and maintain quantitative data processing pipelines to support research, analytics, and production environments. Commit to support and improvement of existing implementations
- Build and optimize data workflows for large-scale financial datasets, ensuring efficiency, scalability, and data integrity across ingestion, transformation, and delivery layers. Understand data flows that support quant models.
- Work within AWS and Azure cloud environments, leveraging services such as S3, Lambda, EC2, Databricks, and Azure Data Factory to support distributed computation and automation.
- Collaborate closely with quantitative analysts, data scientists, and business stakeholders to translate modeling requirements into robust, production-ready systems.
- Implement best practices for code versioning, testing, and CI/CD, ensuring maintainable and reproducible quantitative infrastructure.
- Monitor and troubleshoot pipeline performance, proactively addressing bottlenecks and optimizing for speed, cost, and reliability.
- Continuously acquire new technical skills—including modern data frameworks, cloud tools, and programming techniques—to enhance the team’s analytical capabilities.
- Engage in active learning of the business domain, developing a deep understanding of financial products, market data, and risk factors to better align technical solutions with analytical needs.
- Contribute to documentation, peer reviews, and knowledge sharing to support continuous improvement within the quantitative development team.
KEY BEHAVIOURS
Integrity
- Has the sustained drive and energy to deliver support service to time and quality.
Innovation and Partnership
- Open to and willingly adopts new processes / approaches / ways of working.
- Seeks information/inputs from colleagues/clients.
- Deals with conflict successfully.
Excellence
- Willingly puts in the effort to ensure activities completed on time and to the quality required.
- Pro-active and demonstrates initiative.
- Prioritises activities according to business and operational need.
- Analysis and problem-solving skills.
- Analyses issues to identify the most appropriate solutions.
- Utilises all available resources and toolsets to investigate and resolve problems.
CANDIDATE PROFILE / KEY SKILLS
- Strong working knowledge of Python programming language is required.
- Experience with data wrangling and creating data pipelines in Python is strongly desired.
- Familiarity with programming, computing and searching algorithms is a plus.
- Familiarity with Linux environment is a plus.
- Familiarity with PySpark applications is a plus.
- Familiarity with ETL technologies a plus.
- Familiarity with ML and AI technologies and their applications is a plus.
- Technical degree in a field such as Physics, Computer Science, Engineering, Statistics or Mathematics preferred.
- Familiarity with cloud-based platform like AWS, Azure, DataBricks and Snowflake is a plus.
- Strong leadership skills, desire, and ability to innovate.
- Familiarity with finance and fixed income a plus.
Career Stage:
Senior Associate
Compensation/Benefits Information:
LSEG is committed to offering competitive Compensation and Benefits. The anticipated base salary for this position is $125,100 - $208,500.
Please be aware base salary ranges may vary by geographic location, city and state. In addition to our offered base salary, this role is eligible for our Annual Incentive Plan (AIP/”bonus plan”). Target AIP rates will be commensurate with role level and posted career stage. Individual salary will be reflective of job related knowledge, skills and equivalent experience. LSEG roles (excluding internships and part-time roles of less than 20 hours per week) are typically eligible for inclusion in our LSEG Benefits program, which includes offerings of: Annual Wellness Allowance, Paid time-off, Medical, Dental, Vision, Flex Spending & Health Savings Options, Prescription Drug plan, 401(K) Savings Plan and Company match. LSEG’s Benefits plan also includes basic life insurance, disability benefits, emergency backup dependent care, adoption assistance commuter assistance etc.
LONDON STOCK EXCHANGE GROUP (LSEG) INFORMATION:
Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we’d love to hear from you.
LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.
Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.
Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.
We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.
You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.
LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.
Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.
If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.
INTRODUCTION
The role is in Quantitative Data Research team which sits within Analytics Research Group. This is a senior level quantitative developer role responsible for application development, including the responsibilities for running and refactoring legacy processes as well as coordinating the work of the other developers. This individual will work closely with colleagues within ISD Research and Product Management as well as others with ISD Data Operations, and Technology.
KEY RESPONSIBILITIES
- Design, develop, and maintain quantitative data processing pipelines to support research, analytics, and production environments. Commit to support and improvement of existing implementations
- Build and optimize data workflows for large-scale financial datasets, ensuring efficiency, scalability, and data integrity across ingestion, transformation, and delivery layers. Understand data flows that support quant models.
- Work within AWS and Azure cloud environments, leveraging services such as S3, Lambda, EC2, Databricks, and Azure Data Factory to support distributed computation and automation.
- Collaborate closely with quantitative analysts, data scientists, and business stakeholders to translate modeling requirements into robust, production-ready systems.
- Implement best practices for code versioning, testing, and CI/CD, ensuring maintainable and reproducible quantitative infrastructure.
- Monitor and troubleshoot pipeline performance, proactively addressing bottlenecks and optimizing for speed, cost, and reliability.
- Continuously acquire new technical skills—including modern data frameworks, cloud tools, and programming techniques—to enhance the team’s analytical capabilities.
- Engage in active learning of the business domain, developing a deep understanding of financial products, market data, and risk factors to better align technical solutions with analytical needs.
- Contribute to documentation, peer reviews, and knowledge sharing to support continuous improvement within the quantitative development team.
KEY BEHAVIOURS
Integrity
- Has the sustained drive and energy to deliver support service to time and quality.
Innovation and Partnership
- Open to and willingly adopts new processes / approaches / ways of working.
- Seeks information/inputs from colleagues/clients.
- Deals with conflict successfully.
Excellence
- Willingly puts in the effort to ensure activities completed on time and to the quality required.
- Pro-active and demonstrates initiative.
- Prioritises activities according to business and operational need.
- Analysis and problem-solving skills.
- Analyses issues to identify the most appropriate solutions.
- Utilises all available resources and toolsets to investigate and resolve problems.
CANDIDATE PROFILE / KEY SKILLS
- Strong working knowledge of Python programming language is required.
- Experience with data wrangling and creating data pipelines in Python is strongly desired.
- Familiarity with programming, computing and searching algorithms is a plus.
- Familiarity with Linux environment is a plus.
- Familiarity with PySpark applications is a plus.
- Familiarity with ETL technologies a plus.
- Familiarity with ML and AI technologies and their applications is a plus.
- Technical degree in a field such as Physics, Computer Science, Engineering, Statistics or Mathematics preferred.
- Familiarity with cloud-based platform like AWS, Azure, DataBricks and Snowflake is a plus.
- Strong leadership skills, desire, and ability to innovate.
- Familiarity with finance and fixed income a plus.
Career Stage:
Senior Associate
Compensation/Benefits Information:
LSEG is committed to offering competitive Compensation and Benefits. The anticipated base salary for this position is $125,100 - $208,500.
Please be aware base salary ranges may vary by geographic location, city and state. In addition to our offered base salary, this role is eligible for our Annual Incentive Plan (AIP/”bonus plan”). Target AIP rates will be commensurate with role level and posted career stage. Individual salary will be reflective of job related knowledge, skills and equivalent experience. LSEG roles (excluding internships and part-time roles of less than 20 hours per week) are typically eligible for inclusion in our LSEG Benefits program, which includes offerings of: Annual Wellness Allowance, Paid time-off, Medical, Dental, Vision, Flex Spending & Health Savings Options, Prescription Drug plan, 401(K) Savings Plan and Company match. LSEG’s Benefits plan also includes basic life insurance, disability benefits, emergency backup dependent care, adoption assistance commuter assistance etc.
LONDON STOCK EXCHANGE GROUP (LSEG) INFORMATION:
Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we’d love to hear from you.
LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.
Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.
Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.
We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.
You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.
LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.
Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.
If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.
See all 7,263+ TN Visa Senior Mainframe Developer Jobs
Sign up for free to unlock all listings, filter by visa type, and get alerts for new TN Visa Senior Mainframe Developer Jobs.
Get Access To All JobsTips for Finding TN Visa Sponsorship as a Senior Mainframe Developer
Align your credentials to Computer Systems Analyst
TN visa classification for mainframe work falls under Computer Systems Analyst, not a generic IT category. Your resume and degree transcripts must show systems-level work, not just programming tasks, before you approach any employer.
Target employers with active z/OS environments
Banks, insurance carriers, federal contractors, and large utilities run COBOL and IMS workloads that require dedicated mainframe staff. These organizations already understand specialty occupation documentation because they file repeatedly for the same roles.
Clarify Canadian versus Mexican processing before accepting an offer
Canadian citizens can receive TN approval at a port of entry on the day of travel. Mexican citizens need a consular visa appointment, which adds weeks to the timeline. Confirm which process applies before committing to a start date with your employer.
Request a support letter that details mainframe architecture duties
Generic IT offer letters get scrutinized at the border. Ask your employer to specify z/OS, VSAM, DB2, or CICS responsibilities by name. CBP officers confirm the role matches Computer Systems Analyst criteria, so vague language creates unnecessary risk.
Use Migrate Mate to find employers already sponsoring TN roles
Searching broadly wastes time on employers unfamiliar with visa sponsorship. Migrate Mate filters for companies with recent visa filings in technical roles, so your outreach goes to hiring managers already experienced with sponsoring work visas.
Prepare your support letter for the visa offer timeline
Your employer prepares a support letter outlining the role, qualifications, and worksite details. For Canadian applicants, you'll present this letter at the U.S. port of entry; for Mexican applicants, your employer submits it with your consulate application. Build a few days into your timeline for the employer to finalize documentation so the process isn't rushed.
Senior Mainframe Developer TN Visa: Frequently Asked Questions
Does Senior Mainframe Developer work qualify for TN visa classification?
Yes, provided the role is framed around systems analysis rather than routine programming. CBP classifies mainframe developers under Computer Systems Analyst when the duties include architecture, integration, or optimization of z/OS environments. If the offer letter describes only code writing with no systems-level responsibility, the classification becomes harder to support. Duties like CICS configuration, DB2 schema design, or JCL workflow optimization strengthen the case significantly.
How does TN compare to H-1B for Senior Mainframe Developer roles?
TN has no lottery, no annual cap for Canadians, and no multi-month USCIS adjudication wait. A Canadian citizen with a qualifying offer letter can gain TN status at the port of entry on travel day. H-1B visa requires entering a randomized lottery in March for an October start date, with no guarantee of selection. For mainframe professionals who already have a U.S. job offer, TN is a faster and more predictable path.
What documents does a Canadian mainframe developer need at the border?
You need a valid Canadian passport, a detailed employer support letter describing your mainframe duties and salary, and evidence of your qualifying credentials, typically a bachelor's degree in computer science, information systems, or a related field. If your degree is in an unrelated field, you can supplement with transcripts and a credentials evaluation showing the equivalent of a U.S. four-year degree. CBP makes the final determination on-site.
Where can I find Senior Mainframe Developer jobs with TN visa sponsorship?
Migrate Mate is the recommended starting point. It filters job listings for roles at employers with recent visa filings, demonstrating experience with work visa sponsorship processes. Mainframe openings appear most frequently in financial services, insurance, and government contracting sectors, where legacy COBOL systems are still in active production use.
Can a Mexican citizen get TN status for a mainframe developer role, and how does the process differ?
Yes, Mexican citizens qualify for TN status under USMCA on the same occupational grounds as Canadians. The key difference is processing: Mexican citizens must apply at a U.S. consulate and obtain a TN visa stamp before traveling, rather than seeking admission at the border. Consular appointments vary in availability by location. The supporting documentation requirements are identical, but the timeline is longer, so factor consular scheduling into your start date negotiation.