Senior Full Stack Web Developer Jobs in Valencia, CA

• Develop and maintain full-stack features using .NET (Framework/Core) and relational database with HTML/JavaScript
• Integrate third-party systems (Internal, Stripe, NetSuite, Simphony, QuickBooks) with internal platforms.
• Write and optimize SQL queries (MySQL, PostgreSQL, MSSQL); familiarity with NoSQL (DynamoDB/Mongo) a plus.
• Participate in code reviews, pull requests, and collaborative design discussions.
• Deploy services using AWS infrastructure (EC2, RDS, Lambda, S3) and manage IIS for legacy .NET apps.
• Contribute to CI/CD workflows using Jenkins and GitHub Actions.
• Support production issues related to system performance and integration failures/issues.
• Assist with creating reporting pipelines using tools like Snowflake, Redshift and SQL.
• Work cross-functionally with product, operations, and accounting teams to understand and implement requirements.
• Contribute to technical documentation and maintain system/process clarity.
• Build and document RESTful APIs for internal and external consumption (Swagger/OpenAPI).

• 8+ years in full-stack engineering roles
• Strong experience with .NET (Framework and Core), C#, JavaScript, HTML
• working familiarity with NetSuite API/backend integrations - highly preferred
• Hands-on experience/understanding of AWS, SQL relational databases, and integrations with 3rd party APIs
• Ability to work independently but thrive in a collaborative, fast-paced environment
• Excellent communication skills and a mindset for continuous learning
• Worked in Agile Environment

• Expected base salary range $135,000-$165,000 + . Total starting compensation will be determined based on all lawful criteria, Company policy and best practices.

• Health Benefits: All full-time, regular employees and their dependents are eligible for medical, dental, vision and FSA benefits. Additional health benefits include Healthcare and Dependent Care reimbursement programs, Employee Assistance Program (“EAP”) and Optum Care 24-hour confidential medical counseling services.
• Holidays: The company observes ten (10) paid holidays per calendar year.
• Paid Time Off (PTO): Full-time, regular employees earn 15 days of PTO in the first 12-months of continuous service, and 22 days in subsequent years. Eligible part-time employees earn pro-rated PTO.
• Retirement: Effective with your employment start date, you will be eligible to participate in the 401(k) Plan.
• Education, Learning & Development: We offer college tuition and education assistance programs; LinkedIn Learning courses; and ongoing learning and development opportunities.

About Tillster
Headquartered in the USA, Tillster is the global leader in digital ordering and customer engagement solutions. For over a decade we have developed revolutionary self-service, ordering and payments solutions – for mobile, tablet, online, kiosk, call center, and more – creating personalized interactions based on consumer preferences, language, and currency. Our platform is compatible with 15+ unique POS systems, representing over 90% coverage in multi-unit restaurants. We offer one platform; one scalable, enterprise class solution – to create world-class digital engagement solutions.
Our mission and passion are one in the same: Empower restaurants and consumers to engage and transact anywhere, anytime, and from any device - one consumer at a time, one order at a time, billions of times over. In doing so, together we are transforming e-commerce in restaurants and make the till grow for Tillster and our customers.

Thriving at Tillster
As a member of Tillster, you will embody our core values:

• Put Customers First: Prioritize the needs and satisfaction of our customers in all decisions and actions appropriate to Tillster’s stage of development, resources, and stated goals.
• Collaborate: Work together effectively, leveraging diverse perspectives to achieve common goals.
• Innovate: Embrace creativity and pursue new ideas to drive progress and improvement.
• Operate from Data: Use strong critical thinking skills to make informed decisions based on accurate and relevant data.
• Drive Results: Focus on achieving tangible outcomes and delivering high performance.
• Own It: Take responsibility for your actions and the success of your work.
• Be Passionate and Have Fun: Bring enthusiasm to your work and enjoy the journey.

Making a Difference in the Tillster Way
Our business and product mission is to empower restaurants and consumers globally; by empowering, supporting, and nurturing the people who are part of the global Tillster team. We are committed to fostering an inclusive and diverse work environment where every team member is respected, empowered, and encouraged to grow. To make this a reality, Tillster is dedicated to embracing diversity in all forms and is proudly an equal opportunity employer. We do not discriminate based on race, color, religion, national origin, gender identity, sexual orientation, age, family/parental status, marital status, veteran status, disability, or any other protected status.

Follow us on:
Tillster.com: https://www.tillster.com/
Tillster Careers: https://www.tillster.com/careers
LinkedIn: https://www.linkedin.com/company/tillster/

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Tillster cares about the safety of all our employees—even those we’ve yet to hire

RECRUITMENT FRAUD WARNING
We want to help you stay safe during your job search. Tillster will never:

• Request personal/financial information during recruitment
• Require payment or fees
• Ask for sensitive PII before a formal job offer
• Collect information via email or phone (only through secure channels)
• Extend offers without in-person or virtual interviews

Red flags: All official communications come from @tillster.com addresses only
Suspicious activity? Report immediately to Tillster HR, Legal, or Cyber Security teams.

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