Javascript developer jobs in Poland

 ...video segments like Honest Trailers. Fandom equips high-agency developers with an uncompromised software canvas to engineer highly...  ...designing and writing application layouts natively using modern JavaScript (ES6+), TypeScript, HTML5, and CSS3. Extensive production-level... 

About WearLinq: WearLinq is a groundbreaking healthcare startup emerging from Stanford University on a mission to democratize healthcare. We built an FDA-cleared 6-channel EKG wearable device and mobile app that bridges the gap between patients and providers to diagnose...

 ...Platform teams, and use experimentation, observability, and user behaviour to guide what we build next. The opportunity Design, develop, and maintain high-quality consumer-facing features across web (React) and mobile (React Native), owning the full experience from... 

 ...logging suites (e.g., Splunk, New Relic, CloudWatch, Prometheus, Grafana, Kibana, Sentry). Hands-on programming capacity with JavaScript, Node.js, and TypeScript inside Linux/Mac environments. Solid background in Linux Systems Engineering and sustainable... 

 ...Altoros - a leading IT services provider is looking for a Senior Python Developer. Responsibilities: Lead incident response (primary), ensuring timely triage and resolution within agreed SLAs Perform root cause analysis (RCA) Investigate and fix backend bugs in... 

 ...internationally recognized AI product incubator, growth marketing tech developer, and elite automated systems provider operating on a...  ...integrations cleanly natively leveraging advanced Python Scripting , JavaScript, or TypeScript repositories, and commands complex commercial... 

 ...Support: Partner with core SDET specialists to scale and maintain our existing Playwright end-to-end automation modules built on JavaScript/TypeScript or Python. Agile Quality Advocacy: Participate actively in architectural system designs and product reviews,... 

About Nethermind Nethermind is a blockchain research and software engineering company building high-performance infrastructure, security tooling, and cryptographic systems across the Ethereum ecosystem and beyond. We work closely with protocol teams, L2s, and ZK projects...

 ...& Qualifications A minimum of 3+ years of proven, successful professional software engineering history operating as a Backend Developer, Systems Engineer, Node.js/Python Specialist, API Integration Architect, or closely matching technical capacity inside production... 

 ...distribution system (GDS) API contracts confidently. Key Responsibilities Production-Grade AI Systems Architecture: Design, develop, and scale advanced AI-driven backend services that power virtual agent workflows, conversational reasoning layers, and automation... 

 ...customers onto our AI platform, we’re facing challenges that sit at the intersection of infrastructure, application architecture, developer experience, and enterprise clients’ requirements. These problems are rarely well-defined upfront, there’s never a single way to solve... 

 ..., absolute code ownership, and AI-driven process acceleration as foundational pillars. The platform provides high-agency backend developers with an uncompromised remote canvas to leverage modern containerized tech stacks, manipulate complex relational databases, and build... 

 ...Role: SAP Developer - CAP, ABAP, BTP & AI Services Location: 100% Remote (Europe - Any EU Citizens can apply) Language: English (must) Must have: CAP / SAP BTP SAP CAP (Cloud Application Programming Model, Node.js) as primary development platform... 

 ...focused on elite engineering craftsmanship. Position Overview We are seeking a highly analytical, systems-minded Middle Java Developer to join our expanding back-end engineering division in a remote-first capacity. In this core development seat, you will claim accountability... 

 ...platform services and tooling across the organization. The role focuses on full‑stack software architecture, infrastructure, and developer productivity across on‑prem and cloud environments. You will help drive engineering maturity and operational excellence across... 

 ...decisions, tokenization rules, API authentication, and automated fallback logic. This role demands a seasoned distributed systems developer who can deal thoughtfully with inheritance code complexity, defend error paths aggressively, and independently drive hard problems... 

About Nethermind Nethermind is a blockchain research and software engineering company building high-performance infrastructure, security tooling, and cryptographic systems across the Ethereum ecosystem and beyond. We work closely with protocol teams, L2s, and ZK projects...

 ...infrastructure veteran with 6+ years of craft depth who maps out automated server provisioning fluidly natively using DevOps pipelines, develops low-overhead operational tooling smoothly natively using Python or Go runtime automations, and commands rigid system-hardening... 

About Nethermind Nethermind is a blockchain research and software engineering company building high-performance infrastructure, security tooling, and cryptographic systems across the Ethereum ecosystem and beyond. We work closely with protocol teams, L2s, and ZK projects...

 ...Symphony Solutions has been serving many international clients primarily in Western Europe and North America. We're seeking a Python Developer to join our innovative AI team. This role is focused on building intelligent agents using Microsoft Autogen (or similar tools)... 

 ...are responsible for ensuring that our platform is stable and healthy. We break down barriers to running our products by fostering developer run ownership and empowering developers to build resilient products. We support our developers during the application build phase... 

Facets Developer – C# and SQL for agile development for a Facets implementation role. This Developer position will participate in a team environment for the delivery and code for a Facets testing and implementation. Responsible for programming, debugging and testing of... 

 ...The exchange team develops and maintain a cutting-edge trading platform. With a global presence across APAC, EMEA and North America, the team has since grown with the goal to provide a seamless and secure trading experience for our clients. As a Senior Devops Engineer... 

 ...are responsible for ensuring that our platform is stable and healthy. We break down barriers to running our products by fostering developer run ownership and empowering developers to build resilient products. We support our developers during the application build phase...