AI summary
Senior full-stack software engineering role building and enhancing high-value, data-driven web applications that support Fiserv’s global support operations. You’ll develop React/TypeScript SPAs and C#/.NET Core microservices with SQL Server, partnering with cross-functional teams to deliver secure, scalable user experiences. Standout perk: comprehensive benefits from day one plus strong training/internal mobility opportunities.
Key skills
ReactTypeScriptJavaScript (ES6+)C#ASP.NET CoreRESTful APIsSQL ServerT-SQL (stored procedures, indexing)Git (branching/merging) & CI/CDOAuth2/JWT/Microsoft Entra ID
Salary not listed — comparable on-site Senior Software Engineer (React/.NET) roles in Maryland typically pay about $120k–$160k base, depending on experience and scope.
You'll thrive here if you enjoy owning end-to-end full-stack delivery (React + .NET) for secure, high-volume, data-driven applications in an on-site, highly collaborative environment.
Why apply
- On-site collaboration Monday to Friday
- Benefits available from day one
- Training, development, internal mobility
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
We connect financial institutions, corporations, merchants, and
Any time you swipe your credit card, pay through a mobile app, or
withdraw money from the bank, we’re involved. global scale, come make a difference at Fiserv. Job Title Sr Software Engineer
(React, JavaScript, .net) About your role: team as a Full-Stack Web Developer to build and enhance the high-value,
data-driven applications that power our global support operations. you will work across a modern tech stack—utilizing React and TypeScript on the
front end alongside C# and ASP.NET Core on the back end—to turn complex business
data workflows into secure, scalable, and intuitive user experiences. partnering with cross-functional business and technical teams, your engineering
Design, develop, and maintain responsive web applications using React and
NET Core to support modern Single Page Application (SPA) experiences. evolve, and support robust RESTful APIs and backend microservices in C# with a
Translate complex business needs into well-structured technical solutions,
including UI workflows, API contracts, and performant data models. optimize, and maintain SQL Server database schemas, T-SQL queries, stored
procedures, and advanced indexing strategies to support high-volume data use
Implement enterprise-grade security practices, including secure coding
access controls. Create reusable, tested front-end components and backend
troubleshooting, performance tuning, and production monitoring to ensure
top-tier software quality. Bachelor’s degree in Computer Science, Management Information Systems (MIS), or
equivalent practical/professional work experience. hands-on experience designing, building, delivering, and supporting full-stack
web applications. Strong backend proficiency in C# and modern .NET development
(NET Core). Strong frontend proficiency in React utilizing modern patterns,
experience using TypeScript and modern JavaScript (ES6+) alongside HTML5 and
Solid database
expertise with SQL Server and T-SQL, including data modeling, advanced querying,
Proven experience building, securing, and consuming
REST APIs for client-device and web-client interactions. software development practices, including Git-based version control (advanced
branching and merging), CI/CD concepts, automated unit/integration testing, and
requirements into software solutions. OAuth2, JWT, or Microsoft Entra ID). with containerization (Docker) and deploying workloads across cloud ecosystems
(Azure/AWS) or hybrid/on-prem environments. enterprise reporting, data analysis, or embedded analytics tools such as SSRS or
Power BI. financial services industries. including Visual Studio/VS Code, SSMS, Azure DevOps, GitHub Actions, or IIS. This role is on-site Monday through Friday. 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
This role requires use of a computer and audio equipment.
Travel: Approximately 10% travel off-site or to other office locations is
financial, social, and emotional well-being Paid holidays and generous time away
policies No-cost mental health support through Employee Assistance Programs
culture and expand your network ·Unparalleled professional growth with training,
development, and internal mobility opportunities Medical, dental, vision, life,
and disability insurance options available from day one Retirement planning and
discounted shares with the Employee Stock Purchase Plan Tuition assistance and
reimbursement program Paid parental, caregiver, and military leave #LI-SH2
employee due to the individual's status as a veteran. Please: Apply using your legal name Complete the
Fiserv is proud to be an Equal
gender identity, sexual orientation, age, disability, protected veteran status,
If you have a disability and require a
reasonable accommodation in completing a job application or otherwise
note our AskHR representatives do not have visibility to your application
Fiserv’s Disability Accommodation Policy for additional information. Fiserv does not accept resume submissions from agencies outside of
Please do not send resumes to Fiserv associates. Fiserv is
Fraudulent job postings may be used by cyber
criminals to target your personally identifiable information and/or to steal
money or financial information. the financial services industry. It's our people. professional who gets excited by the challenge of helping Fiserv lead the
transformation of financial services technology for our clients' benefit, we
leader in Fintech and payments, and we move money and information in a way that
We connect financial institutions, corporations, merchants, and
Any time you swipe your credit card, pay through a mobile app, or
withdraw money from the bank, we’re involved. global scale, come make a difference at Fiserv. Job Title Sr Software Engineer
(React, JavaScript, .net) About your role: team as a Full-Stack Web Developer to build and enhance the high-value,
data-driven applications that power our global support operations. you will work across a modern tech stack—utilizing React and TypeScript on the
front end alongside C# and ASP.NET Core on the back end—to turn complex business
data workflows into secure, scalable, and intuitive user experiences. partnering with cross-functional business and technical teams, your engineering
Design, develop, and maintain responsive web applications using React and
NET Core to support modern Single Page Application (SPA) experiences. evolve, and support robust RESTful APIs and backend microservices in C# with a
Translate complex business needs into well-structured technical solutions,
including UI workflows, API contracts, and performant data models. optimize, and maintain SQL Server database schemas, T-SQL queries, stored
procedures, and advanced indexing strategies to support high-volume data use
Implement enterprise-grade security practices, including secure coding
access controls. Create reusable, tested front-end components and backend
troubleshooting, performance tuning, and production monitoring to ensure
top-tier software quality. Bachelor’s degree in Computer Science, Management Information Systems (MIS), or
equivalent practical/professional work experience. hands-on experience designing, building, delivering, and supporting full-stack
web applications. Strong backend proficiency in C# and modern .NET development
(NET Core). Strong frontend proficiency in React utilizing modern patterns,
experience using TypeScript and modern JavaScript (ES6+) alongside HTML5 and
Solid database
expertise with SQL Server and T-SQL, including data modeling, advanced querying,
Proven experience building, securing, and consuming
REST APIs for client-device and web-client interactions. software development practices, including Git-based version control (advanced
branching and merging), CI/CD concepts, automated unit/integration testing, and
requirements into software solutions. OAuth2, JWT, or Microsoft Entra ID). with containerization (Docker) and deploying workloads across cloud ecosystems
(Azure/AWS) or hybrid/on-prem environments. enterprise reporting, data analysis, or embedded analytics tools such as SSRS or
Power BI. financial services industries. including Visual Studio/VS Code, SSMS, Azure DevOps, GitHub Actions, or IIS. This role is on-site Monday through Friday. 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
This role requires use of a computer and audio equipment.
Travel: Approximately 10% travel off-site or to other office locations is
financial, social, and emotional well-being Paid holidays and generous time away
policies No-cost mental health support through Employee Assistance Programs
culture and expand your network ·Unparalleled professional growth with training,
development, and internal mobility opportunities Medical, dental, vision, life,
and disability insurance options available from day one Retirement planning and
discounted shares with the Employee Stock Purchase Plan Tuition assistance and
reimbursement program Paid parental, caregiver, and military leave #LI-SH2
employee due to the individual's status as a veteran. Please: Apply using your legal name Complete the
Fiserv is proud to be an Equal
gender identity, sexual orientation, age, disability, protected veteran status,
If you have a disability and require a
reasonable accommodation in completing a job application or otherwise
note our AskHR representatives do not have visibility to your application
Fiserv’s Disability Accommodation Policy for additional information. Fiserv does not accept resume submissions from agencies outside of
Please do not send resumes to Fiserv associates. Fiserv is
Fraudulent job postings may be used by cyber
criminals to target your personally identifiable information and/or to steal
money or financial information. the financial services industry. It's our people. professional who gets excited by the challenge of helping Fiserv lead the
transformation of financial services technology for our clients' benefit, we