Senior Software Engineer - Enterprise Design System

M&T Bank•Buffalo, NY

4d•Hybrid

About The Position

The Senior Software Engineer builds and maintains a shared front-end design system and component library used across the Bank’s web applications. The role centers on TypeScript component engineering, Node.js-powered build, test, and release pipelines, accessibility and quality standards, and enabling internal product teams through documentation and support. The engineer develops reusable UI components, patterns, and utilities; translates approved UX/UI designs and interaction specifications into robust, accessible components; and develops Web Components and standards-based patterns for framework-agnostic adoption. The role also maintains documentation and developer enablement materials, supports consuming teams, and collaborates with product, design, QA, and engineering teams to align on shared UI standards. The position supports the component library’s build, test, lint, packaging, and publishing tools; CI/CD automation; automated testing and code review practices; and safe versioning and release practices. The engineer troubleshoots integration issues, triages defects, and improves developer experience. They are expected to follow the Company’s risk and regulatory standards, policies, controls, and internal control standards, escalating risk-related issues and addressing audit or regulator findings as applicable. The role also promotes a culture of belonging and reflects the M&T Bank brand. This is an on-site position with the flexibility to work from home one day per week.

Requirements

Associate’s degree and at least 5 years of systems analysis and/or application development work experience, or a bachelor’s degree and at least 3 years of such experience; alternatively, a combined minimum of 7 years of education and/or relevant work experience, including at least 3 years of systems analysis and/or application development work experience.
Professional experience engineering reusable front-end components using JavaScript/TypeScript.
Experience with Node.js and front-end build tooling supporting packaging, testing, and publishing, such as CI pipelines.
Experience with code quality practices such as code reviews, automated testing, and continuous integration.
Advanced proficiency with at least one modern front-end framework: Angular, React, Vue, Solid, Svelte, or Lit.
Ability to work autonomously and multitask on complex projects.
Strong organizational and time-management skills.
Proficient verbal and written communication skills.

Nice To Haves

Deep experience implementing and validating accessible component behavior and familiarity with WCAG concepts.
Experience with design system tooling such as Storybook and maintaining high-quality component documentation.
Familiarity with Figma design handoffs, including consuming component specifications, tokens, and interaction guidance, and collaborating with designers to clarify implementation details.
Hands-on experience with Angular, React, and Lit in a component-library or design-system context.
Familiarity or hands-on experience with Web Components, custom elements, Shadow DOM concepts, and integration with common frameworks.
Experience publishing and maintaining internal packages for multiple consuming teams, including versioning, release notes, and deprecation strategy.
Experience with monorepos and modern build tooling such as package managers, bundlers, and linters, and improving developer experience.
Experience working in an Agile team environment.

Responsibilities

Engineer and evolve a shared TypeScript design system and component library, including reusable UI components, patterns, and utilities.
Translate approved UX/UI designs and interaction specifications into robust, accessible components in partnership with designers and product engineers.
Develop and maintain Web Components (custom elements) and standards-based patterns for consistent, framework-agnostic adoption.
Apply accessibility standards, including semantic markup, keyboard and focus behavior, and appropriate ARIA; guide and review consuming teams’ implementations.
Maintain library documentation, usage guidelines, examples, and developer enablement materials.
Build and operate Node.js-based library tooling for builds, tests, linting, packaging, and publishing, and support CI/CD automation.
Follow design-system quality practices, including automated unit and integration tests, visual or regression testing where applicable, and code reviews.
Support versioning and release practices for internal consumers, including semantic versioning, change logs, and deprecation strategy.
Support internal users by troubleshooting integration issues, triaging defects, and improving developer experience.
Collaborate with product, design, QA, and engineering teams to understand needs, prioritize the backlog, and align on shared UI standards.
Adhere to Company risk and regulatory standards, policies, and controls, and escalate risk-related issues as needed.
Maintain M&T internal control standards, including timely implementation of internal and external audit points and applicable issues raised by external regulators.
Promote a culture of belonging and reflect the M&T Bank brand.
Complete other related duties as assigned.