Senior Backend Software Developer

Emerson Japan, Ltd.; Warszawa; Ibrido; PLN 180.000 - 320.000; Tempo pieno

Descrizione del lavoro

Emerson’s Reliability Solutions team in Warsaw is seeking a Senior Software Developer to design, implement, test, and maintain secure, scalable backend services and APIs using C# and .NET. You will collaborate with a global cross-functional team, contribute to architecture, and build reusable libraries and data solutions across architecture and leadership paths.

You will be involved in secure coding, automated testing, CI/CD, and performance optimization across cloud and containerized

Competenze

• 5+ years professional backend experience in software development.
• Advanced expertise in C#, .NET, and ASP.NET Core.
• Strong OO, asynchronous programming, concurrency, and DI knowledge.
• Experience designing versioned APIs and service contracts.
• Experience with PostgreSQL, MongoDB, and data modeling.
• Experience with microservices and event-driven architectures (RabbitMQ).
• Security-minded with authentication/authorization concepts (OAuth2/OpenID/JWT).
• Automated testing strategies and CI/CD pipelines.
• Cloud and containerization experience (Azure/AWS, Kubernetes).
• English and Polish at B2 level or higher.

Mansioni

• Analyze customer, product, and system requirements to craft backend solutions.
• Design, develop, document, and maintain backend services, REST APIs, and data access layers.
• Contribute to backend architecture and guiding engineering decisions.
• Build reusable libraries and shared services aligned with standards.
• Develop data access for relational and document databases with data integrity.
• Develop microservices and event-driven solutions with asynchronous messaging.
• Implement authentication, authorization, validation, and auditability.
• Create and maintain automated testing frameworks (unit, integration, contract).
• Improve performance, resilience, observability, and production diagnostics.
• Support CI/CD, containerized environments, releases, and incident investigations.
• Participate in code/design reviews and provide technical guidance.

Conoscenze

C#/.NET

ASP.NET Core

Microservices

OAuth2/OpenID/JWT

Docker

Kubernetes

PostgreSQL

MongoDB

Entity Framework Core

RabbitMQ

Git

CI/CD

Cloud (Azure/AWS)

English/Polish B2+

Formazione

Bachelor's degree in Computer Science/Engineering

Strumenti

PostgreSQL

MongoDB

Entity Framework Core

RabbitMQ

Azure

Docker

Kubernetes

Descrizione del lavoro

Join Emerson’s Reliability Solutions team in Warsaw and help develop next-generation software that keeps critical industrial infrastructure operating safely and reliably around the world. As a Senior Software Developer, you will design, implement, test, release, and maintain secure, scalable backend services, APIs, data solutions, and integrations, primarily using C# and .NET technologies. You will collaborate with a global, cross-functional team while contributing to an inclusive, supportive culture that values innovation, technical excellence, continuous learning, and career growth across technology, architecture, and leadership paths.

In This Role, Your Responsibilities Will Be:

• Analyze customer, product, and system requirements and translate them into secure, reliable, scalable, and maintainable backend solutions.
• Design, develop, document, and maintain backend services, REST APIs, business logic, and system integrations using C#, .NET, and ASP.NET Core.
• Contribute to backend and solution architecture, partnering with architects and engineers to make sound technical decisions.
• Build reusable backend libraries, shared services, and development frameworks aligned with engineering standards and best practices.
• Design and implement data access solutions for relational and document databases, ensuring data integrity, performance, consistency, and maintainability.
• Develop and integrate microservice-based and event-driven solutions, including asynchronous communication and resilient message processing.
• Implement security controls including authentication, authorization, validation, auditability, and error handling.
• Create and maintain automated testing frameworks covering unit, integration, contract, component, and performance testing.
• Improve service performance, resilience, observability, availability, and operational efficiency.
• Support CI/CD pipelines, containerized development environments, releases, production diagnostics, incident investigations, and root-cause analysis.
• Participate in code reviews and design reviews while sharing technical expertise and supporting engineering excellence.
• Identify technical risks, dependencies, capacity considerations, and integration challenges, proposing practical solutions and implementation plans.
• Contribute actively to backlog refinement, estimation, sprint planning, and acceptance criteria definition.
• Participate in Program Increment Planning or similar cross-team planning activities by providing technical input, estimates, and dependency analysis.
• Collaborate closely with Product Management, frontend developers, quality engineers, DevOps engineers, cybersecurity specialists, architects, and other stakeholders.
• Contribute to technical documentation, API specifications, engineering standards, developer tooling, process improvements, and intellectual property development.
• Provide technical guidance and coordinate complex technical initiatives.
• Offer constructive feedback to support the growth and development of team members.
• Partner with technology leadership to support team development initiatives.
• Perform other responsibilities aligned with the scope and purpose of the role.

Who You Are:

You build strong partnerships and work collaboratively with others to meet shared objectives. You consistently deliver results, even in challenging situations, by balancing short-term priorities with long-term goals. You readily adapt your approach in response to changing circumstances and new information. You create an environment where diverse perspectives are valued, helping teams solve complex problems through open communication, knowledge sharing, and continuous improvement.

For This Role, You Will Need:

• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• Minimum 5 years professional experience in backend software development, including senior-level technical responsibilities.
• Advanced expertise in C#, .NET, and ASP.NET Core, with hands-on experience building production-grade backend services.
• Strong understanding of object-oriented programming, asynchronous programming, concurrency, dependency injection, middleware, configuration, validation, error handling, and resource management.
• Experience designing versioned APIs and service contracts.
• Experience with Entity Framework Core or comparable data access technologies.
• Experience designing and optimizing data models for relational and document databases.
• Experience working with PostgreSQL, MongoDB, or similar database technologies.
• Experience designing and implementing microservice-based and event-driven architectures, including messaging platforms such as RabbitMQ.
• Understanding of distributed systems challenges including resiliency, consistency, retries, timeouts, and failure recovery.
• Experience implementing authentication and authorization using OAuth 2.0, OpenID Connect, JWT, or comparable technologies.
• Strong knowledge of secure coding practices, API security, secrets management, and application security principles.
• Experience developing automated testing strategies for backend services.
• Experience with cloud platforms and container orchestration technologies such as Azure, AWS, or Kubernetes.
• Experience with observability practices including logging, metrics, tracing, monitoring, and production diagnostics.
• Experience using Git, Docker, CI/CD pipelines, and modern software delivery practices.
• Strong understanding of software architecture, design patterns, domain modeling, maintainability, and performance optimization.
• Experience working within Agile development environments such as Scrum or SAFe.
• English and Polish language proficiency at B2 level or higher with strong communication and collaboration skills.

Preferred Qualifications That Set You Apart:

• Experience with Python, Bash, or PowerShell scripting.
• Experience building shared backend libraries, internal platforms, or reusable engineering frameworks.
• Knowledge of Domain-Driven Design (DDD), Clean Architecture, CQRS, event sourcing, or similar approaches.
• Experience with SignalR, WebSockets, or other real-time communication technologies.
• Experience designing and operating microservices at scale.
• Familiarity with OpenTelemetry and observability platforms.
• Experience supporting high-availability, high-throughput, or fault-tolerant systems.
• Experience developing industrial software, edge computing solutions, connected-device systems, or software supporting critical infrastructure.
• Experience with cloud-native development practices.
• Knowledge of Secure Development Lifecycle practices, threat modeling, vulnerability management, and software supply chain security.
• Experience with API gateways, rate limiting, and advanced microservice patterns.
• Experience using AI-assisted development tools responsibly while maintaining code quality, confidentiality, security, and intellectual property protections.

Our Culture and Commitment To You:

At Emerson, we believe diverse experiences, perspectives, and backgrounds strengthen our teams and fuel innovation. We are committed to creating an inclusive environment where every employee feels respected, valued, and empowered to contribute. You will work alongside talented colleagues on technologies that help customers operate critical infrastructure safely and reliably across the globe.

We support continuous learning, career development, and internal mobility through technical, architectural, and leadership growth opportunities. Our collaborative, no-blame culture encourages experimentation, knowledge sharing, and continuous improvement while prioritizing well‑being, professional growth, and meaningful work.