Sr Developer - Full Stack
Stifel
Hauppauge, NY · Posted March 26, 2026
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- Best cities for engineering pay after cost of living #1 San Mateo ($216k)
- Most requested AI skills in engineering jobs #1 AI tools in daily work (6.1%)
- AI tools named most often in engineering jobs #1 Claude (1.7%)
- Employers with the most engineering jobs #1 Amazon (2,992 roles)
How AI is used in this kind of work
Among software developers, AI is already used for some of the tasks. Measured exposure for software developers: 29% (some).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
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About the job
Why Stifel
Stifel strives for a culture that puts its clients and associates first: a culture where everyone belongs, everyone is welcome, and everyone contributes to the success of our clients, their careers, and the firm as a whole.
Let’s talk about how you can find your place here at Stifel, where success meets success .
What You'll Be Doing
The Senior Developer will participate in all phases of the development process including complex design, integration and maintenance while observing proper behaviors, patterns, and standards. The Senior Developer will demonstrate leadership in mentoring and assisting all on the team, and will actively participate in all disciplines required in a full-stack environment. The Senior Developer will participate in defining Stifel's best practices and ensure they are used in all development projects and procedures.
What We're Looking For
Work with Development team in various phases of development, including design, implementation, integration, revision control, release and the maintenance of multiple products and systems.
Performs advanced discovery and research into technical problems and maps out improvements for web applications.
Lead the development of procedures, using test-driven development, which can be utilized within continuous integration practices.
Follow Stifel's coding and development standards and lead community-driven efforts to update them.
Lead efforts to document code in ways that are useful to both developers and support staff, simplifying and clarifying complicated concepts.
Lead ad-hoc groups of developers across teams to accomplish harder developmental efforts
What You'll Bring
Displays awareness of the impact of actions on the business and demonstrates understanding of the context of the company and acts in line with it.
Ability to demonstrate proactive architecture-driven approach to problem resolution, strong troubleshooting in a crisis and problem-solving skills.
Working with a team making decisions about how development environments will be used to their fullest collaboration potential.
Ability to create and maintain processes and procedures to improve implementation of the software development life cycle (SDLC).
Uses negotiation skills and techniques to obtain agreement between different interests, challenges management constructively, bringing different views into the open.
Transforms mockups and wireframes into usable front-end functionality through developing, testing, and revising web application code.
Creates components based on user interface/user experience norms, including optimal accessibility, navigation, and cross-browser performance.
Education & Experience
Minimum Required: Bachelor's Degree in Computer Science or related field or equivalent experience
Minimum Required:6+ years' of progressive experience in software development
Licenses & Credentials
Minimum Required: None
Systems & Technology
Proficient in Microsoft Excel, Word, PowerPoint, Outlook
Experience in C#/.NET (Core and Framework) or T-SQL on MS SQL Server
Experience with Angular, AngularJS
Advanced experience with source control (like TFS and Git)
#LI-LL1
Compensation Range Salary: USD $110,600.00/Yr. - USD $158,000.00/Yr. Actual salaries may vary, and may be based on several factors, including but not limited to each candidate’s qualifications, skills, and overall competencies for the position. The base salary is one component of Stifel’s overall compensation package for each individual employee. Other benefits and offerings include, but not limited to, discretionary bonuses, health / dental / vision / prescription insurance offerings, Stifel Total Health Connect, flexible spending accounts, tuition & certification assistance programs, paid time off, and much, much more! To view a more comprehensive list of Stifel’s current offerings, please visit https://www.stifel.com/careers/benefits. Applications are accepted until the position is filled.
About Stifel
Stifel is more than 130 years old and still thinking like a start-up. We are a global wealth management and investment banking firm serious about innovation and fresh ideas. Built on a simple premise of safeguarding our clients’ money as if it were our own, coined by our namesake, Herman Stifel, our success is intimately tied to our commitment to helping families, companies, and municipalities find their own success.
While our headquarters is in St. Louis, we have offices in New York, San Francisco, Baltimore, London, Frankfurt, Toronto, and more than 400 other locations. Stifel is home to approximately 9,000 individuals who are currently building their careers as financial advisors, research analysts, project managers, marketing specialists, developers, bankers, operations associates, among hundreds more. Let’s talk about how you can find your place here at Stifel, where success meets success.
At Stifel we offer an entrepreneurial environment, comprehensive benefits package to include health, dental and vision care, 401k, wellness initiatives, life insurance, and paid time off.
Stifel is an Equal Opportunity Employer.