Middle/Senior Software Engineer – Platform

EasySoftGroup; Kraków; On-site; PLN 180,000 - 280,000; Full time

Job summary

EasySoftGroup in Kraków is seeking a Platform Engineer to help build scalable, cloud-native platforms used across multiple engineering teams. You will own shared infrastructure, internal libraries, and developer tooling to accelerate delivery.

You will work with TypeScript, Node.js, NestJS, Kubernetes, Terraform, AWS, and CI/CD pipelines, shaping reliability, performance, and observability. The role involves collaboration across distributed teams and on-call rotations.

Qualifications

• 3+ years of experience building backend services with TS/Node.js (NestJS preferred).
• Strong fundamentals in CPU, memory, I/O, concurrency and performance.
• Experience with AI-assisted developer tools and strong engineering judgment.
• Working knowledge of PostgreSQL including schema design and migrations.
• Familiarity with AWS services and CI/CD pipelines.
• Experience with observability platforms (Prometheus, Grafana, OpenTelemetry, Datadog).
• Ability to learn new tools quickly and write maintainable code.

Responsibilities

• Scope and ownership increase with seniority.
• Build and maintain shared libraries and SDKs for authentication, logging, configuration, API clients, and error handling.
• Develop and support shared backend services and internal APIs.
• Improve developer experience with templates, scaffolding, and local tooling.
• Design and maintain CI/CD workflows for reliability, security, and speed.
• Build observability tooling with metrics, logging, tracing, dashboards and alerts.
• Collaborate with product teams to troubleshoot issues and review designs.
• Participate in on-call rotations and incident response.

Skills

3+ years backend experience

Performance optimization

CI/CD troubleshooting

Observability tooling

On-call rotations

Team collaboration

Tools

TypeScript

Node.js

NestJS

Kubernetes

Terraform

GitHub Actions

AWS

PostgreSQL

Prometheus

Grafana

OpenTelemetry

Datadog

Job description

We are looking for a passionate Platform Engineer with a strong focus on building technical platforms and shared infrastructure used across multiple engineering teams.
You will join a high-performance platform engineering team responsible for foundational systems including internal libraries, shared backend services, CI/CD pipelines, developer tooling, and observability. This role involves significant ownership and collaboration, with a focus on improving engineering velocity, reliability, and scalability across the organization.
You will build scalable cloud-native platforms using technologies such as TypeScript, Node.js, NestJS, Kubernetes, Terraform, GitHub Actions, and AWS. You'll collaborate with distributed cross-functional teams to deliver reliable and maintainable solutions.

Responsibilities

• Scope and ownership increase with seniority.

• Build and maintain shared libraries and SDKs for areas such as authentication, logging, configuration, API clients, and error handling.

• Develop and support shared backend services and internal APIs.

• Improve developer experience through service templates, scaffolding, and local development tooling.

• Design and maintain CI/CD workflows with a focus on reliability, security, and speed.

• Build and maintain observability tooling including metrics, logging, tracing, dashboards, and alerting.

• Collaborate with product engineering teams to troubleshoot complex issues, support integrations, and review technical designs.

• Participate in on-call rotations and incident response.

Core Requirements

• 3+ years of experience building backend services using TypeScript and Node.js, ideally with NestJS in production environments.

• Strong software engineering fundamentals including understanding of CPU, memory, I/O, concurrency, and performance bottlenecks.

• Experience using AI-assisted developer tools effectively while maintaining strong engineering judgment.

• Working knowledge of PostgreSQL including schema design, migrations, and query analysis.

• Familiarity with AWS services such as DynamoDB, SQS, Kinesis, and Lambda.

• Experience working with CI/CD pipelines, including troubleshooting and release workflows.

• Experience with observability platforms such as Prometheus, Grafana, OpenTelemetry, Datadog, or similar.

• Ability to learn new tools, technologies, and domains quickly.

• Commitment to writing maintainable, reusable, and high-quality code.

Senior-Level Expectations

• Additional backend/platform engineering experience with ownership of systems in production environments.

• Experience with PostgreSQL performance tuning including indexing strategies, query plans, and migration management.

• Experience designing and implementing CI/CD strategies including release flows, artifact promotion, and security considerations.

• Experience building observability practices including SLIs/SLOs, dashboards, and alerting systems.

• Ability to lead technical discussions, mentor engineers, and influence engineering standards across teams.

Soft Skills

• Strong sense of ownership and accountability.

• Excellent communication and collaboration skills.

• Ability to work effectively with globally distributed teams.

• Strong attention to detail and commitment to quality.

• Strong problem-solving abilities and customer-focused thinking.

• Comfortable working in fast-paced environments with multiple stakeholders and time zones.