[GBL] Senior Backend Engineer (TypeScript)

Company Description

Software Mind develops solutions that make an impact for companies around the globe. Tech giants & unicorns, transformative projects, emerging technologies and limitless opportunities – these are a few words that describe an average day for us. Building cross-functional engineering teams that take ownership and crave more means we’re always on the lookout for talented people who bring passion and creativity to every project. Our culture embraces openness, acts with respect, shows grit & guts and combines employment with enjoyment.

Job Description

Project – the aim you’ll have

Join an innovative digital platform, building scalable, high-performance backend systems. You'll be part of a collaborative, cross-functional team focused on creating a solid, well-governed data foundation and backend architecture. Working with modern TypeScript technologies and event-driven systems, you'll help deliver trusted, scalable solutions that power personalized member experiences. The client is a leading UK-based organization investing in next-generation technology to transform its digital ecosystem.

Position – how you’ll contribute

• Design and develop high-load backend services using TypeScript, Bun.js, and Nest.js.
• Build and maintain a robust, scalable data architecture, ensuring proper data storage, structure, and documentation.
• Integrate backend services using gRPC and manage inter-service communication via protobuf contracts.
• Implement event-driven solutions with message brokers such as Nats.io, Kafka, or SQS.
• Work with analytical (ClickHouse) and transactional (PostgreSQL) databases to optimize queries and ensure data reliability.
• Integrate with third-party systems including Auth0, Stripe, Sanity CMS, HubSpot, Algolia, and external APIs (e.g., Google Places).
• Ensure strong data governance: define data structures, storage strategies, and maintain comprehensive documentation.

Qualifications

Expectations – the experience you need

• Proven commercial experience in backend development with TypeScript and Node.js.
• Hands-on experience with Nest.js or similar backend frameworks.
• Solid understanding of microservices architecture and distributed systems.
• Experience with PostgreSQL: indexes, transactions, and query optimization.
• Practical experience with message brokers, preferably Kafka.
• Familiarity with gRPC and building APIs for inter-service communication.
• Understanding of event-driven architecture principles.
• Ability to write clean, maintainable, and type-safe code with a focus on scalability.

Additional skills – the edge you have

• Experience with Bun.js in production or personal projects.
• Hands-on experience with ClickHouse for analytical workloads.
• Experience building high-load systems and real-time or near-real-time data pipelines.
• Familiarity with observability tools: logs, metrics, and distributed tracing.
• Understanding of DDD, CQRS, and Clean Architecture patterns.

Additional Information

Our offer – professional development, personal growth:

• Flexible employment and remote work  
• International projects with leading global clients 
• International business trips  
• Non-corporate atmosphere 
• Language classes 
• Internal & external training 
• Private healthcare and insurance  
• Multisport card 
• Well-being initiatives 

Position at: Software Mind Poland