Senior Software & Platform Engineer

🏢 Summary: Backend engineering role focused on building and scaling a SaaS platform for complex manufacturing operations. The position owns API, business-logic, data-model, reliability, and integration work across production, planning, inventory, quality, and shopfloor workflows. 🗂️ Requirements: 3+ years of professional software engineering experience, Strong C# and .NET knowledge, Relational database and SQL knowledge, Entity Framework or similar ORM experience, REST/HTTP API design experience, Backend business-logic implementation experience, Clean, maintainable, testable code, AI-assisted development tools experience, English communication skills 📃 Skills: C#, .NET, SQL, EntityFramework, REST, HTTP, ORM, AI 🏢 Description: Manufacturo powers operations for companies building satellites, fusion reactors, next-generation aircraft, and hypersonic vehicles. The SaaS platform supports complex manufacturing operations with greater control, traceability, and speed. The Role As a Software Engineer – Backend, you will help build, evolve, and scale a SaaS platform used to manage manufacturing operations. This backend-first, hands-on role focuses on the core platform, with production at its center and close connections to planning, inventory, quality, and shopfloor workflows. You will build product features, design APIs, model business logic and data structures, and contribute to the technical quality, maintainability, and reliability of the platform. You will work closely with engineers, product owners, testers, and UX/UI designers to understand business needs, clarify requirements, identify technical risks, and deliver practical solutions. This role suits someone who can work independently, contribute to technical discussions, and make pragmatic engineering decisions while maintaining long-term quality. You should be comfortable in a high-change environment where priorities and context can evolve quickly. What You’ll Do • Develop and evolve a complex SaaS platform supporting real manufacturing operations • Design APIs, business logic, and data models for workflows across production, planning, inventory, quality, and shopfloor operations • Improve system reliability, maintainability, and performance as it grows • Investigate and resolve issues across application logic, databases, integrations, and distributed services • Collaborate with engineers, product owners, testers, and designers to clarify requirements and deliver practical technical solutions • Contribute to code reviews, technical decisions, automated testing, and continuous improvement of engineering practices • Use AI-assisted development tools to support coding, debugging, investigation, and learning Required Skills & Experience • 3+ years of professional software engineering experience and strong practical knowledge of C# and .NET • Good knowledge of relational databases, SQL, and Entity Framework or a similar ORM • Experience designing REST/HTTP APIs and implementing backend business logic for production systems • Ability to write clean, maintainable, and testable code while making pragmatic technical and design decisions • Ability to translate complex business requirements into reliable technical solutions • Practical use of AI-assisted development tools • Good written and verbal communication skills in English for day-to-day collaboration in an international environment Nice to Have • Experience with Angular or another modern frontend framework and a full-stack mindset • Experience with Azure services, asynchronous messaging, or tools such as MassTransit • Experience with application performance, SQL optimization, CI/CD, or cloud-based delivery • Experience or genuine interest in SaaS, ERP, MES, manufacturing, logistics, aerospace, or other complex industrial domains What You’ll Get in Return • Work on projects with innovative companies in space exploration and other advanced industries • Hybrid working arrangement: 3 days a week from the office • Comprehensive healthcare, including life insurance and a Multisport Card • Opportunity to make an impact and interact with product owners, management, and clients

🏢 Summary: Mid Test Engineer role focused on ensuring the quality and reliability of a complex SaaS platform for manufacturing operations. The position combines manual testing and TypeScript-based automation across UI, REST APIs, and data workflows, with close collaboration throughout feature delivery. Hybrid work includes three days per week in the Kraków office. 🗂️ Requirements: 2+ years of software testing, QA, or test engineering experience, Web application or SaaS testing experience, Exploratory and regression testing knowledge, SQL querying and data investigation, REST/HTTP API testing, JavaScript or TypeScript test automation experience, Feature-level test planning and risk analysis, AI-assisted testing or coding tool experience, English communication skills, Availability for hybrid work in Kraków three days per week 📃 Skills: SQL, REST, HTTP, JavaScript, TypeScript, SaaS, API, AI 🏢 Description: Manufacturo powers operations for companies building satellites, fusion reactors, next-generation aircraft, and hypersonic vehicles. Companies such as Hermeus, Relativity Space, and Sierra Space rely on our platform to run complex manufacturing operations with greater control, traceability, and speed. We are a SaaS company building software for some of the most advanced industrial programs in the world. The work we do has real-world impact, and the systems we support are complex, fast-moving, and mission-critical for our customers. We are hiring a Test Engineer to join our product engineering organization and help us improve the quality, reliability, and stability of Manufacturo. This is a role for someone with testing experience who enjoys understanding complex systems, working with data and APIs, and combining thoughtful manual testing with practical automation. The Role As a Mid Test Engineer at Manufacturo, you will work closely with developers, product owners, and other testers to validate new features, identify risks early, and make sure our platform behaves reliably across complex business workflows. This is a hands-on testing role with real ownership. You will be expected to take a feature or larger change, understand the business flow, identify risks, plan how to test it, verify behavior through UI, API, and data, and help the team decide what should be automated. You will split your time between manual testing and test automation . We expect you to be comfortable exploring product behavior, asking precise questions, working with APIs and databases, and contributing to automated tests where they bring real value. This role is a good fit for someone who can work independently, challenge unclear requirements, and help the team think about quality before development is finished — not only at the end. You should be comfortable working in a high-change environment where priorities can evolve, context changes quickly, and teams need to keep delivering value without losing quality. What You’ll Do Take ownership of testing features and larger product changes from analysis through release Understand complex workflows across production, planning, inventory, and shopfloor operations Identify quality risks, edge cases, data dependencies, and gaps in expected behavior early in the process Work with developers and product owners to clarify requirements, acceptance criteria, business rules, and testability Use SQL to verify business outcomes, investigate issues, and understand how workflows affect data Test REST/HTTP APIs, including payload validation, status codes, error handling, permissions, and edge cases Develop, maintain, and improve automated tests using TypeScript Analyze automated test failures to distinguish real product issues from test instability, and help decide what's worth automating versus covering manually Report bugs with strong technical context, including reproduction steps, test data, logs, screenshots, API payloads, and database observations where relevant Use AI tools to accelerate test design, automation, debugging, investigation, and daily productivity Required Skills & Experience 2+ years of experience in software testing, QA, test engineering, or a similar role Experience testing web applications, SaaS products, ERP, MES, logistics, manufacturing, or other workflow-heavy systems Solid understanding of testing principles — exploratory testing, regression testing, and clear bug reporting Good SQL skills — ability to join tables, verify data, investigate issues, and reason about data changes caused by user actions Practical experience testing REST/HTTP APIs, including payloads, status codes, authentication/authorization basics, and error scenarios Working knowledge of JavaScript or TypeScript, with practical experience creating, maintaining, or debugging automated tests Ability to plan testing for a feature based on requirements, product behavior, business logic, and technical risks — and to challenge unclear requirements by asking precise questions about expected behavior Practical use of AI tools such as ChatGPT, Cursor, Codex, or similar for learning, testing, or coding Good written and verbal communication skills in English Nice to Have Experience with Cypress, Playwright, or similar automation frameworks Familiarity with Azure DevOps, Jira, or similar tools for work tracking and bug reporting Understanding of CI/CD pipelines and how automated tests fit into delivery flow Experience working with production, manufacturing, logistics, ERP, MES, warehouse, or shopfloor systems Genuine interest in space, aerospace, advanced manufacturing, or complex industrial systems Our Tech Stack Backend: .NET, C#, Entity Framework, SQL Server / Azure SQL Frontend: Angular, micro-frontend architecture, our own Angular Component Library Testing: manual testing, API testing, test automation, Cypress APIs: REST/HTTP Cloud: Azure CI/CD and work tracking: Azure DevOps Observability: OpenTelemetry, Grafana stack AI tooling: Cursor and Codex, and other modern AI-assisted development tools What You’ll Get in Return Work on software used by some of the most innovative manufacturing companies in the world Our testers work closely with developers from day one - not as a separate entity but as active participants in how features are designed and delivered Real learning opportunities in SQL, API testing, automation, cloud-based SaaS systems, and AI-assisted work Space to influence how we test, what we automate, and how we improve quality within the team Opportunity to grow through hands-on work with complex product workflows, data, APIs, and automation Hybrid working with three days in our Kraków office, comprehensive healthcare including life insurance, and a Multisport Card.