Technical Project Manager

🏢 Summary: Hands-on Technical Lead role focused on architecting and scaling a mobile ecosystem for a high-growth enterprise delivery platform. The position involves leading a mobile team, owning technical strategy, and building performant React Native applications with deep native iOS and Android integrations. The role emphasizes offline-first systems, real-time GPS tracking, and high-concurrency mobile architectures. 🗂️ Requirements: 8+ years of software engineering experience, Production-level mobile development experience, 2+ years in technical leadership or team lead role, Experience driving architecture and mentoring engineers, Expert knowledge of React Native, Expert knowledge of TypeScript, Deep understanding of native iOS internals, Deep understanding of native Android internals, Fluent English, Fluent Polish (B2+ minimum) 📃 Skills: ReactNative, TypeScript, iOS, Android, GPS, Geofencing 🏢 Description: Technical Lead (Mobile) The Opportunity: We are looking for a hands-on Technical Lead to own, architect, and scale the mobile ecosystem powering a high-growth US enterprise delivery platform. You will build and mentor a small, agile mobile team from day one in a newly established Kraków R&D hub. This is a greenfield product-minded role —not an order-taker position. You will have full ownership of technical architecture, strategy, and engineering standards. The Core Challenges Real-World Engineering: Architecting robust, battery-optimized systems that survive unstable field connectivity ( offline-first data synchronization ). High-Concurrency Tracking: Implementing high-performance real-time GPS/location tracking and geofencing workflows for millions of operational end-users. Hybrid Architecture: Scaling a core React Native platform while tightly integrating native iOS/Android subsystems where performance is critical. Your Profile 8+ years in software engineering with deep, production-level mobile development experience. 2+ years in a technical leadership/team lead capacity, driving architecture and mentoring junior/senior engineers. Expert-level proficiency in React Native , TypeScript , and deep understanding of native iOS/Android internals. Fluent in English and Polish (B2+ minimum for collaboration across EU/US time zones). The Company A fast-growing, highly decorated US SaaS platform managing a network of over 12 million drivers. Consistently ranked on Forbes’ America's Best Startup Employers . They combine the technical agility of an early-stage startup with the financial backing and stability of an established enterprise market leader.

🏢 Summary: Engineering Leader role owning a key B2B SaaS product domain with significant business impact. Responsible for setting technical direction, shaping product vision with Product Leadership, and leading a large cross-functional team. Focused on scalable architecture, operational excellence, and high-quality delivery in a modern web and cloud environment. 🗂️ Requirements: 8+ years of software engineering experience, Proven experience building complex B2B SaaS enterprise solutions, Experience leading and managing large engineering teams, Strong knowledge of modern web development, Hands-on experience with cloud platforms, Experience contributing to architectural decisions and scalable systems, Experience working in a Product + Tech partnership model 📃 Skills: NETCore, React, Azure, SaaS, B2B, Web, Cloud, Architecture, Scalability 🏢 Description: We are looking for an experienced Engineering Leader to take ownership of a key product domain with significant business impact. In this role, you will work closely with Product Leadership, jointly shaping the product vision, roadmap, delivery, and overall business success. You will lead a large, cross-functional team (approx. 20 engineers and specialists), setting the technical direction for a core part of the customer experience. This role requires a leader who combines strong technical expertise in B2B SaaS with a product-oriented mindset. Key responsibilities: Collaborate with Product Leadership to define the product vision and roadmap, aligning technical possibilities with business objectives Lead, mentor, and grow a cross-functional team, fostering a culture of ownership, quality, and continuous improvement Drive operational excellence at scale by improving team efficiency and removing blockers in complex initiatives Provide technical leadership and actively contribute to architectural decisions, ensuring scalability and maintainability of solutions Work closely with engineering, product, and design teams to ensure alignment on priorities and delivery Oversee product quality and performance, while managing technical debt alongside new feature development Maintain visibility over team capabilities and support the growth of senior talent Requirements: Proven track record in building complex B2B SaaS enterprise solutions 8+ years of experience in software engineering, including leadership experience (managing larger teams is a strong plus) Strong understanding of modern web development and cloud platforms (experience with .NET Core, React, and Azure is a plus) Product mindset and experience working in a Product + Tech partnership model Experience delivering impactful solutions, not just maintaining legacy systems Excellent communication skills in English and Polish (C1/C2) Self-driven, proactive, and collaborative Experience working in international, fast-paced, and multicultural environments Additional information: Candidates must be eligible to live and work in Poland Location: Hybrid (Warsaw – approx. 4 days/month in the office) or fully remote within Poland What we offer: Opportunities for personal and professional development A dynamic, innovative work environment based on strong values Training and development budget Private healthcare Co-financed sports card Option to work fully remotely or in a hybrid model with an office in Warsaw

🏢 Summary: Leadership role responsible for owning and scaling a key B2B SaaS product domain with significant business impact. The position combines technical direction, architectural oversight, and close collaboration with Product to shape vision, roadmap, and delivery. You will lead a large cross-functional team and ensure scalable, high-quality solutions in a modern cloud environment. 🗂️ Requirements: 8+ years of software engineering experience, Proven experience building complex B2B SaaS enterprise solutions, Experience leading and managing large engineering teams, Strong knowledge of modern web development, Experience with cloud platforms, Hands-on experience with architectural design and scalability, Experience in Product + Tech partnership model, Fluency in English and Polish (C1/C2), Eligibility to work in Poland 📃 Skills: .NET, React, Azure, SaaS, B2B, Cloud, Web, Architecture, C# 🏢 Description: We are looking for an experienced Engineering Leader to take ownership of a key product domain with significant business impact. In this role, you will work closely with Product Leadership, jointly shaping the product vision, roadmap, delivery, and overall business success. You will lead a large, cross-functional team (approx. 20 engineers and specialists), setting the technical direction for a core part of the customer experience. This role requires a leader who combines strong technical expertise in B2B SaaS with a product-oriented mindset. Key responsibilities: Collaborate with Product Leadership to define the product vision and roadmap, aligning technical possibilities with business objectives Lead, mentor, and grow a cross-functional team, fostering a culture of ownership, quality, and continuous improvement Drive operational excellence at scale by improving team efficiency and removing blockers in complex initiatives Provide technical leadership and actively contribute to architectural decisions, ensuring scalability and maintainability of solutions Work closely with engineering, product, and design teams to ensure alignment on priorities and delivery Oversee product quality and performance, while managing technical debt alongside new feature development Maintain visibility over team capabilities and support the growth of senior talent Requirements: Proven track record in building complex B2B SaaS enterprise solutions 8+ years of experience in software engineering, including leadership experience (managing larger teams is a strong plus) Strong understanding of modern web development and cloud platforms (experience with .NET Core, React, and Azure is a plus) Product mindset and experience working in a Product + Tech partnership model Experience delivering impactful solutions, not just maintaining legacy systems Excellent communication skills in English and Polish (C1/C2) Self-driven, proactive, and collaborative Experience working in international, fast-paced, and multicultural environments Additional information: Candidates must be eligible to live and work in Poland Location: Hybrid (Warsaw – approx. 4 days/month in the office) or fully remote within Poland What we offer: Opportunities for personal and professional development A dynamic, innovative work environment based on strong values Training and development budget Private healthcare Co-financed sports card Option to work fully remotely or in a hybrid model with an office in Warsaw

🏢 Summary: Tech Leader role in an international transformation program focused on modernizing core enterprise platforms across multiple countries. The position combines hands-on Java development with technical leadership, driving architecture decisions and ensuring high-quality delivery in an agile environment. You will design and evolve complex core systems while collaborating with cross-functional stakeholders. 🗂️ Requirements: 6+ years enterprise software development experience, Experience with complex core systems (configuration, integrations, business logic), Strong knowledge of Java and JVM ecosystem, Experience designing and implementing REST APIs, Strong SQL knowledge, Experience in Agile/Scrum environments, Ability to lead technical delivery and mentor developers, Understanding of clean code principles and design patterns, Fluent English 📃 Skills: Java, JVM, REST, SQL, Agile, Scrum 🏢 Description: About the role You will join an international technology team working on a large-scale transformation program focused on modernizing core business platforms across multiple countries. The team operates in an agile setup and is responsible for building and evolving critical systems that support key business processes. We are looking for a Tech Leader who combines strong hands-on engineering skills with the ability to drive technical decisions and ensure high-quality delivery. You will work closely with both business and technology stakeholders in a collaborative, cross-functional environment. Key responsibilities Lead technical delivery within the development team (hands-on + mentoring) Design and implement new features within a core enterprise platform Translate business requirements into scalable technical solutions Ensure high code quality, performance, and adherence to engineering best practices Collaborate with business analysts, testers, and stakeholders Maintain and enhance existing solutions Identify and reduce technical debt Actively participate in Scrum ceremonies and contribute to continuous improvement Create and maintain technical documentation Requirements 6+ years of experience in enterprise software development Experience working with complex core systems (configuration, integrations, business logic) Strong knowledge of: Java / JVM ecosystem REST APIs SQL Experience working in Agile/Scrum environments Proven ability to guide and mentor developers Solid understanding of clean code principles and design patterns Fluent English Nice to have Experience with large-scale, distributed systems Background in transformation or platform modernization projects Experience working in international environments What’s in it for you Participation in a large, international transformation program Work in a mature agile environment Real impact on architecture and platform evolution Collaboration with experienced teams across multiple locations Flexible form of cooperation: employment contract (UoP) or B2B

🏢 Summary: Tech Lead role responsible for driving technical direction, architecture, and scalability of a global SaaS CAFM platform, covering backend, database, and UI layers. The position focuses on translating business needs into robust technical solutions while ensuring performance, quality, and delivery within an agile environment. Hybrid work model with cross-functional collaboration across international teams. 🗂️ Requirements: 5+ years hands-on PHP experience, Prior experience as Tech Lead, Strong knowledge of software architecture and system design, Experience with database design, Experience with scalable and high-performance systems, Familiarity with Flutter or mobile development, Experience with AWS or other cloud platforms, Experience working in agile product environments, Ability to use AI development tools in daily workflow 📃 Skills: PHP, Flutter, AWS, SQL, Architecture, Agile, Copilot, Claude, ChatGPT 🏢 Description: ABOUT THE COMPANY Our client is redefining how the world's most ambitious real estate companies run their operations. Our mission is to become Europe's leading platform for managing warehouse, logistics, retail, and multi-site commercial real estate portfolios — empowering clients to protect revenue, boost efficiency, and unlock new value across every aspect of their business. Our unified CAFM platform already powers the daily operations of over 250 million m² of real estate worldwide, supporting more than 500,000 professionals. Following recent strategic mergers, we now help manage 100,000+ buildings across 35+ countries — and we're just getting started. Backed by a leading growth equity investor, we're scaling rapidly through acquisitions and bold innovation, staying true to our core values: adaptability, collaboration, and client focus. ABOUT THE ROLE We're looking for a Tech Lead to drive technical direction for an assigned team, covering everything from database design to user interface. You'll take full accountability for scalability, performance, and code quality — translating business needs into technical solutions and shaping the operational backbone of a high-growth SaaS company with global reach. This is a hybrid role requiring 2–3 days per week in the office. WHAT YOU'LL WORK ON Architecture and technical leadership Drive architecture decisions — not just code reviews. Own the technical direction for your team and ensure solutions are scalable, performant, and built to last. Business-to-technical translation Work closely with PMs, QA, mobile teams, and client stakeholders to translate business requirements into actionable technical solutions and vice versa. Sprint planning and delivery Decompose epics into actionable tasks, support sprint planning, and keep delivery on track across a cross-functional team. AI-augmented development Actively use AI tools — Copilot, Claude, ChatGPT — as part of your daily workflow. We expect our engineers to leverage these tools to move faster and build better. WHAT WE LOOK FOR Senior PHP engineering experience 5+ years of hands-on PHP experience with a strong grasp of architecture, performance, and code quality in product environments. Prior Tech Lead experience You've led a team before — you know how to balance technical ownership with enabling others to do their best work. Mobile development familiarity Experience with Flutter or mobile development. You don't need to be a mobile specialist, but you can work across the stack. Cloud platform knowledge Familiarity with AWS or other cloud platforms and how to build and deploy at scale. Product and agile mindset Background in product-oriented, agile environments. You think about outcomes, not just outputs. THE TEAM You'll work within a curious, international, and mission-driven engineering organisation. The culture is collaborative, the autonomy is real, and the scope is genuinely global — 35+ countries, 500,000+ users, and growing. COMPENSATION & BENEFITS Salary 192,000 – 300,000 PLN per year. Learning Annual learning budget. Perks Office-led social initiatives including yoga, football, company retreats, happy hours, and weekly breakfasts. Growth Exciting intra-company career growth paths with real scope expansion as the business scales. Work model Hybrid — 2–3 days per week in the office.

🏢 Summary: Lead Data Engineer role focused on driving architecture and leading a team to build scalable, secure ETL/ELT pipelines and analytics-ready data models on modern cloud platforms. The position combines hands-on engineering with technical leadership, ensuring high standards in governance, observability, and performance optimisation. You will shape data infrastructure that supports large-scale analytics across the organisation. 🗂️ Requirements: Proven experience leading data engineering or analytics engineering teams, Strong programming skills in SQL, Strong programming skills in Python, Hands-on experience with Airflow or Prefect in production, Deep practical experience with dbt, Experience with Snowflake or Databricks at scale, Strong knowledge of dimensional modelling and SCD strategies, Experience implementing data quality and governance frameworks, Experience with CI/CD and automated testing in data systems 📃 Skills: SQL, Python, Airflow, Prefect, dbt, Snowflake, Databricks, ETL, ELT, CI/CD, SCD, Dimensional, Git, IaC 🏢 Description: ABOUT THE COMPANY Our client is a global legal technology company that has been building software for the legal industry for over two decades. Our AI-powered cloud platform is used by leading law firms, Fortune 500 corporations, and government agencies worldwide to organise complex data, surface critical insights, and act on them — across litigation, investigations, regulatory inquiries, and data breach response. We're valued at $3.6 billion and invest over $170 million annually in R&D. We're making substantial investments in data lake technology and distributed systems to support future growth and advanced analytics. Our scale means the data problems here are genuinely hard — and the infrastructure you lead will have real consequence across the organisation. ABOUT THE ROLE We're looking for a Lead Data Engineer to combine deep technical expertise with hands-on team leadership, guiding a team of data engineers building and maintaining ETL/ELT pipelines, data models, and governance frameworks that power analytics and reporting across the organisation. This is a technical leadership role — you'll drive architectural decisions, mentor engineers, and ensure delivery of secure, reliable, and scalable data solutions. You'll collaborate closely with stakeholders to align technical work with business objectives, champion governance and observability standards, and foster a culture of continuous improvement. The expectation is that you're equally effective in an architecture review as you are pairing with an engineer on a tricky pipeline problem. WHAT YOU'LL WORK ON Team leadership and mentorship Lead and mentor a team of data engineers, promoting collaboration, knowledge sharing, and professional growth. Set the standard for engineering quality and hold the bar consistently. Architecture and pipeline design Drive architectural decisions for ETL/ELT pipelines, orchestration frameworks (Airflow/Prefect), and transformation layers (dbt). Facilitate architecture reviews and contribute to design decisions for scalable, fault-tolerant systems. Analytics data modelling Oversee design and implementation of analytics-ready data models — dimensional schemas, SCD strategies, and semantic layers — that internal teams can build on reliably. Engineering best practices Ensure adherence to clean code, modular design, CI/CD, automated testing, and code review standards across all data engineering work. Platform optimisation Manage performance tuning and cost optimisation for Snowflake, Databricks, and related cloud data platforms at scale. Governance and observability Champion governance, observability, and compliance frameworks across all data workflows — including data quality, lineage tracking, and multi-tenant environment controls. Stakeholder communication Communicate effectively with leadership and cross-functional teams to provide updates, resolve blockers, and ensure timely delivery aligned with business objectives. WHAT WE LOOK FOR Proven technical team leadership Demonstrated experience leading data engineering or analytics-focused development teams — mentoring engineers, driving architectural decisions, and owning delivery outcomes. SQL and Python Strong programming skills in both SQL and Python, applied to production data systems at scale. ETL/ELT orchestration Hands-on experience with orchestration tools — Airflow and/or Prefect — in production pipeline environments. dbt expertise Deep practical experience with dbt for transformation workflows and analytics modelling, including testing, documentation, and modular project design. Snowflake and Databricks Familiarity with Snowflake and/or Databricks for large-scale data processing, including performance tuning and cost management. Data modelling principles Solid understanding of data modelling principles, incremental strategies, and schema design for analytics — dimensional modelling, SCDs, and semantic layer design. Governance and data quality Knowledge of data quality frameworks, lineage tracking, and governance in multi-tenant environments. Software engineering practices Familiarity with CI/CD, automated testing, and infrastructure-as-code practices applied to data systems. Communication and stakeholder management Strong communication skills with the ability to operate confidently across technical teams and business stakeholders. THE TEAM You'll join a global engineering organisation working on a platform used by some of the world's largest legal teams. The culture is diverse, inclusive, and driven by high standards. Engineers here work on genuinely complex technical problems at scale — and are supported with the coaching, development, and tooling to keep growing. COMPENSATION & BENEFITS Salary 270,000 – 406,000 PLN per year, plus an annual performance bonus and long-term incentives. Health coverage Comprehensive health, dental, and vision plans. Parental leave Parental leave available for both primary and secondary caregivers. Flexible working Flexible work arrangements, hybrid model. Company breaks Two week-long company-wide breaks per year, plus additional time off. Training investment Dedicated training investment programme to support ongoing professional development.

🏢 Summary: Hands-on Technical Lead (.NET) role focused on designing and delivering scalable, high-performance software solutions for logistics platforms. The position combines architectural decision-making, microservices and cloud-based system design with active coding and team leadership. You will drive technical direction, ensure best engineering practices, and oversee Azure-based cloud environments and CI/CD processes. 🗂️ Requirements: 8+ years of software engineering experience, Minimum 2 years in technical leadership role, Strong experience with .NET and C#, Experience designing and developing scalable RESTful APIs, Knowledge of microservices architecture and design patterns, Experience with message queues, Experience with relational or NoSQL databases, Experience with Azure and GCP cloud services, Experience with Docker and Kubernetes, Experience with CI/CD practices, Experience with Agile methodologies, Experience managing software releases and performance monitoring, Advanced English proficiency (B2+) 📃 Skills: .NET, C#, Node.js, REST, Microservices, RabbitMQ, Kafka, MySQL, MongoDB, CosmosDB, Azure, GCP, Docker, Kubernetes, CI/CD, Agile 🏢 Description: As Technical Lead (.NET) you join a team of talented engineers and developers working together to transform final mile logistics and supply chain operations.  Your role will be a hands-on leadership position where you guide engineering teams to deliver scalable, high-quality software solutions. This is the perfect role for experienced engineers who thrive in technical decision-making, architecture, and mentorship—while staying engaged in hands-on coding. Key Responsibilities: Define the technical direction, making pivotal design decisions to ensure our architecture is scalable, maintainable, and high performing. Stay hands-on with coding, leading by example and ensuring adherence to best practices in security, performance, development, deployment and observability. Implement scalable microservices, API gateways, and event-driven architectures, ensuring high availability, disaster recovery and fault tolerance strategies are in place. Champion high-quality code testing, automation testing, and continuous integration/continuous deployment (CI/CD). Oversee Azure-based cloud architecture, optimizing performance, security, and cost efficiency. Directly supervise, mentor, and develop a team of 5-7 engineers, providing career guidance and fostering a culture of engineering excellence full of collaboration, accountability and professional growth. Actively recruit and interview top talent to strengthen the engineering team. Collaborate with Product Managers to align roadmap priorities, streamline development workflows, and enhance team processes for improved efficiency and operational excellence. Optimize development workflows and SDLC processes to improve team velocity, efficiency and maintain low cycle times. Establish engineering KPIs and leverage data-driven insights to enhance performance. Stay updated with industry trends and emerging technologies to continuously improve our platform. Requirements: 8+ years in software engineering (ideally .NET C#), with at least 2 years in a technical leadership role. Experience in other tech stacks like Node.js as a plus. Demonstrated expertise in designing and developing scalable APIs, with knowledge of RESTful principles and best practices. Knowledge of microservices architecture and related design patterns / best practices. Experience with message queues (e.g., RabbitMQ, Kafka) and event-driven architecture / patterns. Experience with databases such as MySQL, MongoDB, CosmosDB or similar. Experience utilizing cloud services (Azure and GCP) and containerization (Docker, Kubernetes). Experience with Agile methodologies and CI/CD practices. Experience in managing software releases, performance monitoring, and reliability improvements. Strong problem-solving skills and ability to work in a fast-paced environment. Ability to explain complex technical concepts to engineers, executives, and cross-functional teams. Advanced proficiency in English, both written and spoken (B2+). Office location: Kraków, Poland Work Style: hybrid (2-3 days from the office / week preferred) Salary levels: 28 000 – 32 000 PLN/ month Take the next step in your career and become a part of OneRail’s exciting journey!

🏢 Summary: Tech Lead role focused on designing and delivering backend-centric, cloud-based solutions for a custom industrial application covering end-to-end logistics, production, and shipment processes. The position combines strong .NET backend expertise with Angular fullstack work, emphasizing Domain Driven Design, Clean Architecture, and microservices. The role requires technical ownership, architectural decision-making, and pragmatic delivery within a European team. 🗂️ Requirements: Minimum 7 years of commercial experience in .NET development, Experience in senior or Tech Lead role, Strong backend expertise, Hands-on Fullstack experience with Angular, Experience with cloud-native architectures, Knowledge of Domain Driven Design, Knowledge of Clean Architecture, Experience with microservices, Experience with API design, Practical use of AI tools in development, Fluent English, Residence in Poland 📃 Skills: .NET, Angular, C#, Cloud, Microservices, APIs, DDD, Architecture, AI, Git 🏢 Description: We are looking for an experienced Tech Lead to join a European team working on a custom-built solution for the industrial/manufacturing sector. The application supports an end-to-end process—from logistics, through production, to final shipment—ensuring full traceability and process control. This role is strongly backend- and cloud-focused and requires a pragmatic, delivery-oriented mindset. Your tasks Design, develop, and maintain backend-centric fullstack solutions using .NET and Angular Take ownership of technical decisions with a strong focus on backend architecture and cloud-based solutions Build and evolve systems based on Domain Driven Design and Clean Architecture Design, develop, and maintain microservices, APIs, and integration layers Ensure code quality through unit tests and architectural consistency Plan and realistically deliver roadmap items, focusing on feasibility, prioritization, and execution Requirements Minimum 7 years of commercial experience in .NET development, including senior or tech lead responsibilities Strong backend expertise combined with hands-on experience as a Fullstack Developer (Angular) Solid understanding of cloud-native architectures and modern backend systems Solid understanding of Domain Driven Design, Clean Architecture, microservices, and API design Practical experience using AI tools in daily development work (e.g., AI copilots, AI-assisted coding, AI-driven workflows) Pragmatic, realistic engineering mindset focused on delivery, planning, and rational decision-making Ability to take ownership of complex topics and drive them to completion Fluency in English Residing in Poland required

🏢 Summary: Opportunity for an experienced Java Tech Lead to combine hands-on backend development with technical leadership, driving architectural decisions and guiding a development team. The role focuses on designing scalable backend services with Java and Spring Boot while ensuring alignment with business goals and engineering best practices. Hybrid work model with production release support responsibilities. 🗂️ Requirements: Minimum 8 years of professional Java software engineering experience, Previous experience in a Technical Lead or similar leadership role, Strong expertise in Java 17+, Strong expertise in Spring Boot, Solid understanding of software architecture, Experience with distributed systems, Experience designing RESTful APIs, Fluent English, Fluent Polish, Residence in Poland, Availability for hybrid work (3 days per week in office), Availability to support production releases 1–2 weekends per month 📃 Skills: Java, Spring, SpringBoot, REST, API, Microservices, DistributedSystems 🏢 Description: We are looking for an experienced Java Tech Lead who will play a key role in shaping technical solutions, guiding the development team, and ensuring the successful delivery of high-quality software products. This position combines hands-on development with technical leadership. You will be responsible for driving architectural decisions, mentoring engineers, collaborating with Product Owners and Business Stakeholders, and ensuring that technical solutions align with business objectives and engineering best practices. Your tasks Leading technical design discussions and driving architectural decisions across the team Evaluating and proposing technical solutions to ensure scalability, maintainability, and performance Providing technical guidance and support to developers throughout the software development lifecycle Designing and developing backend services and REST APIs using Java and Spring Boot Performing hands-on coding for complex features and critical system components Supporting production releases and ensuring platform stability Requirements At least 8 years of professional experience in software engineering with Java Previous experience as a Technical Lead, Lead Developer, Senior Developer with mentoring responsibilities, or a similar leadership role Strong expertise in Java 17+ and Spring Boot Solid understanding of software architecture, distributed systems, and RESTful API design Fluency in English Open to a hybrid working model with presence in the office 3 days per week Availability to support production releases approximately 1–2 times per month during weekends (around 2 hours per occurrence) Fluent Polish required Residing in Poland required What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!

🏢 Summary: Tech Lead role focused on architecting and leading development of Risks & Inspections and Safety Intelligence solutions using .NET, C#, and React in an enterprise SaaS environment. The position involves backend engineering, API design, event-driven architecture, and technical leadership within a hybrid B2B contract setup. The project includes collaboration across domains with emphasis on secure, spec-driven, and scalable development practices. 🗂️ Requirements: Deep knowledge of .NET architecture, Deep knowledge of C# architecture, Experience with REST API design, Experience with OpenAPI, Expertise in React, Strong understanding of event-driven architecture, Experience in spec-driven development, Ability to lead technical projects and teams, Proficiency in English, Availability for hybrid work in Warsaw 📃 Skills: .NET, C#, REST, OpenAPI, React, SaaS, APIs, MDM 🏢 Description: Details: Team Structure : Team of 5, including the tech lead, backend, frontend, QA, and SME. Contract : B2B - 12 months contract with possible extensions. Set up: Hybrid - 2 days/week in the Warsaw’s office, rest remote. Start Date : ASAP, ideally within 3-4 weeks. Travel : Possibly one trip during the year to Netherlands or France Language Requiremen t: Proficiency in English. Summary The primary purpose of the Tech Lead role is to guide the development of a project focusing on Risks & Inspections and Safety Intelligence. This position is crucial for ensuring the architecture and backend engineering align with industry standards and project goals, leading a small team while overseeing technical delivery and stakeholder collaboration. Main Responsibilities: Architect .NET / C# solutions and oversee backend engineering. Design APIs using contract-first approach with REST and OpenAPI. Ensure React-based enterprise SaaS applications align with business requirements. Implement event-driven architecture and manage workflow orchestration. Lead spec-driven development ensuring quality and traceability. Manage authorization, auditability, and secure design practices. Facilitate human-in-the-loop controls within agentic workflow patterns. Align capabilities across multiple domains including MDM, audit, and APIs. Provide technical leadership and manage delivery planning and risk assessment. Key Requirements: Deep knowledge of .NET / C# architecture. Experience with REST and OpenAPI design. Expertise in React for enterprise SaaS applications. Strong understanding of event-driven architecture. Experience in spec-driven development practices. Capability to lead technical projects and teams. Nice to Have: Experience with agentic workflow understanding. Familiarity with human-in-the-loop governance principles. Knowledge of auditability and traceability by design. Background in cross-capability collaboration.