Senior Software Engineer - CIAM

M&T Bank Corporation; Buffalo (NY); On-site; USD 97,000 - 162,000; Full time

Benefits offered by this job

Forty hours paid volunteer time

Job summary

M&T Bank Corporation is seeking a skilled software developer to design, build, test, and deploy CIAM applications in Buffalo, NY. You will implement login, MFA, SSO flows and integrate identity providers with digital banking channels.

Strong C#/.NET and JavaScript skills are required, along with hands-on experience in OAuth2.0, OIDC, SAML, and JWT. You will contribute to CI/CD pipelines, testing, and security scanning within an SDLC framework.

Qualifications

• Advanced proficiency in C#/.NET and JavaScript.
• Experience implementing authentication and authorization (OAuth2.0, OIDC, SAML, JWT, SSO).
• Hands-on with source control (Git), CI/CD pipelines, and automated builds/deployments.
• Knowledge of Web APIs, microservices, distributed systems, and design patterns.

Responsibilities

• Design, develop, test, and deploy CIAM apps within the SDLC.
• Build and enhance authentication/authorization (login, MFA, SSO).
• Develop Web APIs integrating identity platforms with banking channels.
• Review PRs and provide quality feedback; manage change control.
• Maintain tests and contribute to CI/CD and security scanning.
• Analyze requirements and provide development estimates.
• Support production operations, incident triage, and root cause analysis.
• Collaborate with engineers, architects, and stakeholders on architecture.
• Share knowledge via code reviews and documentation.
• Adhere to risk, regulatory standards and M&T policies.

Skills

C#/.NET

JavaScript

OAuth 2.0

OIDC

SAML

JWT

SSO

Git

CI/CD

Azure

AKS

Angular

Strivacity

PingFederate

Azure App Service

Entra ID

Dynatrace

Kibana

SonarQube

Aqua

Mend

Education

Associate's degree

Bachelor's degree

Tools

Git

CI/CD pipelines

Azure

AKS

Azure App Service

Azure Functions

Entra ID

Dynatrace

Kibana

SonarQube

Aqua

Mend

Strivacity

PingFederate

Job description

Primary Responsibilities

Work independently within the boundaries of the approved Software Development Life Cycle (SDLC) to design, develop, test, and deploy CIAM applications and integrations that solve business needs and minimize risk to the Bank through clean, secure, and resilient code.

Author organized, clean, efficient, and secure source code at an advanced level, primarily in C#/.NET and JavaScript, with work verified by a lead software engineer, applying appropriate data structures, algorithms, and design patterns to solve business problems.

Build and enhance customer authentication and authorization capabilities, including login, MFA and step-up flows, password recovery, customer profile management, and SSO integrations, using OAuth 2.0, OpenID Connect (OIDC), SAML, and JWT/token-based security models.

Develop and maintain Web APIs and services that integrate customer identity platforms with digital banking channels and partner applications.

Regularly review pull requests, provide constructive feedback on code quality and improvements, and execute on the change management of approved requests.

Utilize source code management tools to manage and deploy code and applications, ensure compliance with SDLC policies, and support merge conflict resolution.

Write and maintain automated unit and integration tests and contribute to CI/CD pipelines, code-quality analysis, and security scanning to ensure applications are production ready.

Independently analyze and critique technical and business requirements to ensure completeness, accuracy, and feasibility, and provide estimates for development work.

Support production operations for CIAM applications, including incident triage, troubleshooting, and root cause analysis, using application monitoring and observability tools.

Collaborate, document, and communicate technical implementation details clearly and concisely with other teams on dependent requirements as needed.

Contribute to conversations with lead engineers, architects, and business or technical stakeholders regarding application architecture and design, raising risks and recommending improvements.

Share knowledge with peers and less experienced engineers through code reviews, pairing, and documentation.

Understand and adhere to the Company's risk and regulatory standards, policies, and controls in accordance with the Company's Risk Appetite.

Identify risk-related issues needing escalation to management.

Promote an environment that supports a culture of belonging and reflects the M&T Bank brand.

Maintain M&T internal control standards, including timely implementation of internal and external audit points together with any issues raised by external regulators, as applicable.

Complete other related duties as assigned.

Scope of Responsibilities

Supervisory/Managerial Responsibilities No supervisory responsibilities. Provides informal knowledge sharing and peer support to team members through code reviews and collaboration.

Education and Experience Required

Associate's degree and a minimum of 5 years' systems analysis and/or application development work experience or Bachelor's degree and a minimum of 3 years' systems analysis and/or application development work experience.

In lieu of a degree, a combined minimum of 7 years' education and/or relevant work experience, including a minimum of 3 years' systems analysis and/or application development work experience.

Advanced proficiency in a minimum of 1 relevant programming language, preferably C#/.NET.

Hands‑on experience with JavaScript for web or API development.

Working knowledge of software design patterns, Web APIs, microservices, and distributed systems concepts.

Experience implementing or supporting authentication and authorization using OAuth 2.0, OpenID Connect (OIDC), SAML, JWT/token-based security, and SSO.

Hands‑on experience with source control platforms (such as Git), CI/CD pipelines, and automated build and deployment processes.

Experience working in Agile delivery teams using collaboration and work-tracking tools.

Education and Experience Preferred

Advanced analytical skills specific to application development.

Ability to work autonomously and multitask on complex projects.

Strong organizational and time-management skills.

Proficient verbal and written communication skills.

Experience with Angular or another modern front‑end framework.

Experience with customer identity (CIAM) platforms such as Strivacity, PingFederate, or similar identity providers.

Familiarity with MFA, step‑up and adaptive/risk‑based authentication, passkeys, and fraud‑aware authentication patterns.

Experience with Microsoft Azure and cloud‑native technologies, such as Azure App Service, Azure Kubernetes Service (AKS), Azure Functions, managed identities, and Entra ID.

Experience with DevSecOps and observability tools such as Dynatrace, Kibana, SonarQube, Aqua, and Mend.

Experience developing software in financial services or another regulated industry.

M&T Bank is committed to fair, competitive, and market‑informed pay for our employees. The pay range for this position is $97,100.00 - $161,800.00 Annual (USD). The successful candidate’s particular combination of knowledge, skills, and experience will inform their specific compensation.

Location Buffalo, New York, United States of America

Great companies have an enduring sense of purpose. At M&T, our purpose is a simple one: make a difference in people’s lives and uplift the communities we serve.

M&T Bank Corporation is a financial holding company headquartered in Buffalo, New York.

M&T’s affiliates offer advice, guidance, expertise and solutions across the entire financial spectrum, combining M&T Bank’s traditional banking services with the wealth management and institutional capabilities offered by Wilmington Trust.

M&T Bank has a network of over 1,000 branches and 2,200 ATMs that span 12 states from Maine to Virginia and Washington, D.C.

For more than 165 years, M&T has striven to take an active role in our communities and build long‑lasting relationships with our customers.

We are a bank for communities—combining the capabilities of a large bank with the care of a locally focused institution.

As an employer of choice, we are proud to offer competitive benefits ranging from medical and retirement to forty hours of paid volunteer time, each year.

Our core values – integrity, ownership, collaboration, curiosity, and candor – drive the work we do.

We seek to further build upon our record of success by bringing in top talent and fresh skill sets while continuing to support the growth and development of all our team members.

M&T Bank is unwavering when it comes to providing equal employment opportunities to all employees and applicants without regard to race, color, national origin, religion, ethnicity, sex, gender identity, age, disability, citizenship, pregnancy, veteran status, military status, marital status, sexual orientation, genetic information or any other characteristic protected under applicable federal, state or local laws.

M&T Bank Corporation has policies and procedures in place to promote a drug free workplace.