Senior Full-Stack Software Engineer

<span><span><b><span>Job Title: </span></b><span>Senior Full-Stack Software Engineer<br/><br/><strong>Location:</strong></span><span><strong><u> REMOTE BUT YOU MUST LIVE IN PORTUGAL</u></strong></span><br/><br/><span><span><b><span>Job Summary:</span></b></span><br/><span><span>Contribute to the design, development, and support of scalable, integrated business systems across web, cloud, and enterprise platforms. You’ll work alongside the Principal Architect to build high-performance applications, and integrations using .NET (Framework/Core), SQL (MySql/MSSQL/PgSql) databases, AWS, and third-party systems.</span><span><span><b><span>Key Responsibilities</span></b></span></span><ul><li><span>Develop and maintain full-stack features using .NET (Framework/Core) and relational database with HTML/JavaScript</span></li><li><span>Integrate third-party systems (Internal, Stripe, NetSuite, Simphony, QuickBooks) with internal platforms.</span></li><li><span>Write and optimize SQL queries (MySQL, PostgreSQL, MSSQL); familiarity with NoSQL (DynamoDB/Mongo) a plus.</span></li><li><span>Participate in code reviews, pull requests, and collaborative design discussions.</span></li><li><span>Deploy services using AWS infrastructure (EC2, RDS, Lambda, S3) and manage IIS for legacy .NET apps.</span></li><li><span>Contribute to CI/CD workflows using Jenkins and GitHub Actions.</span></li><li><span>Support production issues related to system performance and integration failures/issues.</span></li><li><span>Assist with creating reporting pipelines using tools like Snowflake, Redshift and SQL.</span></li><li><span>Work cross-functionally with product, operations, and accounting teams to understand and implement requirements.</span></li><li><span>Contribute to technical documentation and maintain system/process clarity.</span></li><li><span>Build and document RESTful APIs for internal and external consumption (Swagger/OpenAPI).</span></li></ul><span><span><b><span>Preferred Qualifications</span></b></span></span><ul><li><span>8+ years in full-stack engineering roles</span></li><li><span>Strong experience with .NET (Framework and Core), C#, JavaScript, HTML</span></li><li>working familiarity with NetSuite API/backend integrations - highly preferred</li><li><span>Hands-on experience/understanding of AWS, SQL relational databases, and integrations with 3rd party APIs</span></li><li><span>Ability to work independently but thrive in a collaborative, fast-paced environment</span></li><li><span>Excellent communication skills and a mindset for continuous learning</span></li><li><span>Worked in Agile Environment</span></li></ul><br/><span><b>The Interview Process</b><br/><b>1</b>. Recruiter interview with a Talent Acquisition specialist<br/><b>2.</b> interview with our Program Leader Full Stack<br/><b>3</b>. Final interview with our Head of Software Development</span><p><span><b>Pay and Benefits (PORTUGAL)</b></span></p><ul><li><span>Compensation competitive to market and geographical location.</span></li><li><span>Meal allowance for each day worked available through meal card.</span></li><li><span>Home/Office allowance reimbursement per calendar month, pro-rated based on employment start date.</span></li><li><span><b>Health insurance</b>: Tillster pays the premium for employee private health insurance. Employees have the option to add their spouse/dependents at the employee’s cost.</span></li><li><span><b>Holidays:</b> Up to 20 federal and local/municipal holidays in accordance with applicable Portuguese Labor laws, dependent on your employment start date.</span></li><li><span><b>Vacation:</b> Up to 22 days of vacation every holiday year, pro-rated based on employment start date.</span></li><li><span><b>Education, Learning &amp; Development</b>: We offer Udemy Learning courses; and ongoing learning and development opportunities.</span></li></ul><p><span><b>Tillster is proudly an Equal Opportunity Employer</b></span></p><p><span><b>No Visa Sponsorship</b></span></p><p><span><b>Principals only – no Agencies or calls please</b></span></p><br/> <p><strong>About Tillster</strong><br> 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.<br> <br> 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