1,000+ matching jobs for “Senior System Software Engineer”

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Exact titles rank first, then title variations and keywords in descriptions. These labels aren't qualification scores. Without keywords, recently added jobs appear first.

Mastercard

Senior Software Engineer

Mexico City, Mexico

As a Senior Software Engineer, you will: Software Design, Architecture & Development: • Design, build, and evolve …

Added Oct 27, 2026

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Mastercard

… services that help people, businesses and governments realize their greatest potential. Title and Summary Senior Software Engineer Overview As a Senior Software Engineer, you will play a key role in designing, building, …

Added Oct 30, 2026

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Walt Disney

Senior Software Engineer

Seattle, Washington, United States +1 location

Full time
Regular

… shape industry norms, and solve complex and distinctive technical problems. Media Engineering builds the software and systems that prepare media content and metadata for the Disney Streaming platform - providing the best …

Added Oct 27, 2026

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KBR

Senior Software Engineer

Beavercreek, Ohio, United States

Pay posted by employer$150,000–$200,000

Design, develop, and maintain software supporting systems, simulations, and performance analysis environments Lead development and implementation …

Added Nov 3, 2026

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Mastercard

Senior Software Engineer

O'Fallon, Missouri, United States

Pay posted by employer$115,000–$184,000 USD

… that power critical capabilities across the real-time payment network. This is an opportunity to work on software that operates at global scale, where speed, reliability, and resilience matter every day. As a Senior …

Added Oct 27, 2026

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Nvidia

Senior Software Engineer

Ra'anana, Central District, Israel +1 location

NVIDIA is looking for an excellent Software Engineer to join the InfiniBand Switch and NVLink FW group in Tel-Aviv / Raanana. As the team member, you …

Added Oct 27, 2026

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Nvidia

Senior Software Engineer

Israel, Tel Aviv

of a Senior Software Engineer in the Platform Group is to design and develop scalable, high-performance systems that …

Added Oct 27, 2026

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Mastercard

Senior Software Engineer

Pune, Maharashtra, India

… to do the work. There is no dictated leadership hierarchy within the team members. Role & Responsibilities Senior Software Engineer is the one who develops software as per business requirements and demonstrates excellent …

Added Oct 27, 2026

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Mastercard

Senior Software Engineer

O'Fallon, Missouri, United States

Pay posted by employer$115,000–$184,000 USD

Software Development • Design, build, test, deploy, and maintain software components, automation frameworks, and …

Added Oct 27, 2026

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Fiserv

Senior Software Engineer

Alpharetta, Georgia, United States

Full time
Regular

… stack codebase dealing with Risk and Fraud detection in an OLTP environment with high standards of SLA and system high availability. Efficient cross system integration to handle transaction per SLA needs Storage and …

Added Nov 10, 2026

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Mastercard

Senior Software Engineer

O'Fallon, Missouri, United States

Pay posted by employer$115,000–$184,000 USD

• Design, develop, and maintain high-quality software components, automation frameworks, and engineering tools that improve software delivery confidence. • Build …

Added Oct 27, 2026

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Leidos Holdings

Sr. Software Developer

Gaithersburg, Maryland, United States

Pay posted by employer$107,900–$195,050

As a Senior Software Developer, you'll play a key role in designing, developing, testing, and deploying secure, …

Added Nov 3, 2026

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Leidos Holdings

Senior Software Engineer

Annapolis Junction, MD

Pay posted by employer$154,050–$278,475

Leidos has a new and exciting opportunity for Software Engineers (hiring junior level, mid-level, up to senior level) in our INTEL SECTOR- Cyber & Analytics …

Added Nov 3, 2026

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Labcorp Holdings

Senior Software Engineer

Bloomfield CT

Full time
Regular

Design, develop, and support application‑level software for laboratory automation equipment, including liquid‑handling and instrument‑tending robotic systems. …

Added Oct 16, 2026

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Freddie Mac

Senior Software Engineer

McLean, Virginia, United States

Full time
Regular

Pay posted by employer$129,000–$193,000

… work contributes to a greater purpose. Position Overview: Join our Enterprise Business Technology team as a Senior Software Engineer , where you'll lead the development of Corporate Communications and Marketing technology …

Added Oct 15, 2026

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GE HealthCare Technologies

Senior Software Engineer

Seongnam-si, Gyeonggi-do, South Korea

Summary The Senior Software Engineer has responsibilities extending to the development and implementation of application and …

Added Nov 4, 2026

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Carrier Global

Senior Software Engineer

PRT5208: Rua Rua Santos Dias No. 1121, Matosinhos, 4465-255, Portugal

Rol: Senior Software Engineer Location: Porto, Portugal Type of contract: Permanent Carrier is the leading worldwide …

Added Oct 27, 2026

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GE Vernova

Sr. Software Engineer

Hyderabad, Telangana, India +1 location

Summary The role entails advanced software development for Power Systems Applications, with a focus on delivering specific functionalities to meet …

Added Oct 27, 2026

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GE HealthCare Technologies

Senior Software Engineer

FIN03-01-Helsinki-Kuortaneenkatu 2

… where every voice makes a difference, and every difference builds a healthier world. As an experienced Senior Software Engineer, you will define, develop, and maintain embedded product software as part of our sensor …

Added Oct 27, 2026

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Leidos Holdings

Senior Software Engineer

Canberra, Australian Capital Territory, Australia

As a talented member of our software engineering team, you will provide innovative and high-value solutions to a variety of complex technical …

Added Nov 3, 2026

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Fiserv

Senior Software Engineer

Alpharetta, Georgia, United States

Full time
Regular

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About this opportunity

Original employer description

Calling all innovators – find your future at Fiserv.

We’re Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants, and consumers to one another millions of times a day – quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we’re involved. If you want to make an impact on a global scale, come make a difference at Fiserv.

Job Title

Senior Software Engineer

About your role:
At Fiserv, we are dedicated to transforming financial services technology to benefit our clients. As a Senior Software Engineer, you will play a critical role in designing, developing, and maintaining high-quality software applications. You will work with cross-functional teams to deliver solutions that align with our business goals and client needs.

This team is the Application team is the core IT team for transaction processing in the ACH Payment world at Fiserv.

What you'll do:

Build and maintain complex algorithms and application stack codebase dealing with Risk and Fraud detection in an OLTP environment with high standards of SLA and system high availability.
Efficient cross system integration to handle transaction per SLA needs
Storage and retrieval of transactional data from OLTP database using quick and efficient methods
Dealing with multiple stakeholders, Product and business groups to understand the go forward requirements and initiatives for enhancement of the platform and new client integration
Maintain security standards of the application code base and provide quick resolution to incidents and issues reported across the board in a live transaction processing environment in high availability

Experience you'll need to have:

6+ years of experience in software development
5+ years of hands-on experience in Java , J2EE coding in AWS cloud infrastructure.
5+ years of experience in snowflake , Oracle and Dynamo DB
5+ years of experience with Unix and Linux operating system, scripts and commands.
5+ years of experience in TCP/IP , SSL , cross system integration and strong knowledge of network layer , firewall and system integration.
5+ years of experience in Socket based calls involving multilayer system calls handling SLA based transaction processing.
5+ years of experience working with application and Very Large OLTP Database calls integration adhering to system SLA needs
5+ years of experience in AWS
3+ years of experience with CI/CD pipelines and DevOps practices
3+ years of experience with Agile methodologies
Bachelor's degree in Computer Science, Information Technology, Information Systems, a related field (or foreign equivalent degree), or equivalent work experience.

Experience that would be great to have:

Experience in the financial services industry
Experience or knowledge of Legacy systems involving C/C++/ pro*c is an added advantage

Important information about this role:

This role is on-site Monday through Friday. Fiserv considers in-person collaboration to be an essential part of this role as in-person office experiences help you with your overall onboarding experience and leads to stronger productivity.
You must currently possess valid and unrestricted U.S. work authorization to be considered for this role. Individuals with temporary visas including, but not limited to, F-1 (OPT, CPT, STEM), H-1B, H-2, or TN, or any candidate requiring sponsorship, now or in the future, will not be considered for this role.
This is a full-time, direct-hire position, and no contract options for unsolicited agency submissions will be considered.
All offers of employment are contingent on standard background checks. Fiserv and certain of its affiliated companies are federal, state, and/or local government contractors. Should this position support a Federal Government contract, now or in the future, the successful candidate will be subject to a background check conducted by the U.S. Government to determine eligibility and suitability for federal contract employment for public trust or sensitive positions. Positions that support state and/or local contracts also may require additional background checks to determine eligibility and suitability.

This role is not eligible to be performed in Colorado, California, District of Columbia, Hawaii, Illinois, Massachusetts, Maryland, Minnesota, New Jersey, New York, Nevada, Rhode Island, Vermont, Virginia, Maine or Washington.

It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.

Please note that salary ranges provided for this role on external job boards are salary estimates made by outside parties and may not be accurate.

Thank you for considering employment with Fiserv. Please:

Apply using your legal name
Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).

Our commitment to Equal Opportunity:

Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law.

If you have a disability and require a reasonable accommodation in completing a job application or otherwise participating in the overall hiring process, please contact [email protected]. Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiserv’s Disability Accommodation Policy for additional information.

Note to agencies:

Fiserv does not accept resume submissions from agencies outside of existing agreements. Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.

Warning about fake job posts:

Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.

Why this result? · Employer labels

Keywords also found in description

Full time
Regular
Tech - Software Engineering

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