{"id":2113268,"url":"https://alion.io/job/par-technology-senior-full-stack-engineer-netsqlangular","title":"Senior Full-Stack Engineer (.Net/SQL/Angular)","company":{"id":4623,"name":"PAR Technology","domain":"partech.com","url":"https://alion.io/company/par-technology","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"contractor","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":57000,"max_usd":94000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":312},"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Angular","optional":false},{"name":"C#","optional":false},{"name":"ClickHouse","optional":false},{"name":"MS SQL","optional":false},{"name":"SQL","optional":false},{"name":"Apache Kafka","optional":true},{"name":"ASP.NET Core","optional":true},{"name":"Azure","optional":true},{"name":"JavaScript","optional":true},{"name":"Postman","optional":true},{"name":"Redis","optional":true},{"name":"TypeScript","optional":true},{"name":"Windows","optional":true}],"status":"live","first_seen_at":"2026-09-21T11:50:26Z","employer_posted_date":null,"last_verified_at":"2026-09-21T11:50:26Z","board_verified":false,"closed_at":null,"days_open":23,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":23},"description":"ParTech, Inc. is seeking a Senior Full Stack Engineer to join our PAR OPS software development team to deliver solutions that connect people to the restaurants, meals, and moments they love.\n\nAs a leading restaurant technology provider to the world’s top restaurant brands, we’re calling all rebels, instigators, idealists, and builders to join our constantly growing team. So if you:\n\nExcelled at every job\n\nWant to work on large, complex applications in a competitive global market\n\nWant to work closely with a professional distributed team (mainly in the United States, Poland, and Ukraine)\n\nPlease submit your CV and join our team.\n\nOur Tech Stack:\n• EDI: MS Visual Studio, MS SQL Server Management Studio, WebStorm, Postman\n• Back-end: C#,.Net8, SQL Server, Redis, ClickHouse, Kafka\n• Windows: C#, .Net, DevExpress\n• Front-End: Angular 17, ASP.Net,.Net5\n• Hosted on Microsoft Azure\n\nWe offer a generous remuneration package that includes:\n— Competitive Contract Employment Salary Opportunities;\n— Health and Wellness Package;\n— Unbonded PTO (Paid Time Off);\n— Sick leave days.\nZakres obowiązków\n Design and implement solutions to requirements that are easily maintainable, highly scalable, deeply tested, and very high quality\n Assist with troubleshooting and resolving complex production system issues, including critical issues\n Obtain a deep level of understanding in areas of the product worked on\n Propose architecture and design optimizations\n Analyze the performance and scalability impact of various in-place and proposed designs\n Work with the development and testing teams to ensure consistent, high-quality deliveries\n Continually strive for increased efficiency, maintainability, and quality\n Perform peer design and code reviews and provide feedback on areas that need improvement\n Assist in the technical and professional growth of team members\n Maintain highly cohesive and collaborative relationships with team members and other coworkers\nWymagania\nWhat do we need from you: \n\nStrong expertise in MS SQL Server, including:\n\nWriting complex stored procedures, triggers, and functions\n\nQuery tuning and performance optimization using tools like Execution Plans and SQL Profiler\n\nHands-on experience with high-performance databases such as ClickHouse or similar solutions\n\nDeep understanding of OOP, Design 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