Senior Node.js Developer – Freelance

🕒 July 6

🇵🇱 Poland – Remote

💵 €35 / hour

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 31%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Netguru

WebsiteLinkedInAll Job Openings

501 - 1000 employees

Founded 2008

💼 Consulting

🏥 Healthcare

📣 Marketing

Consulting • Healthcare • Marketing

Netguru is a consultancy, product design, and software development company based in Poznań, Poland. It provides a wide range of services from ideation, rapid prototyping, product strategy, and software development, to user experience and interface design. Netguru focuses on industries such as finance, retail, healthcare, and real estate, offering solutions like Modern Retail, Proptech, AI Development, and Mobile App design and development. The company also specializes in team augmentation and maintenance services, ensuring rapid and efficient delivery for its clients.

📋 Description

• Understand an existing multi-product architecture before proposing changes • Assess code and design quality, including correctness on money/stock paths, security posture, and coupling between product lines • Write RFCs and ADRs for new and evolving systems, documenting assumptions, failure modes, capacity, and security • Make extend-versus-rebuild decisions with migration paths built in • Address multi-currency payments, fraud and abuse exposure, PCI DSS scope, third-party supplier integrations, and traffic spikes up to 65x baseline • Pair directly with the client's engineering manager and team within planning, standups, and design reviews • Put system designs into production

🎯 Requirements

• Roughly 5-8 years of experience • Ability to design services using bounded contexts and minimize cross-service dependencies • Ability to design for expected peak load and validate limits through testing • Ability to build reusable components with documentation and migration paths • Ability to diagnose issues across service boundaries • Ability to write architecture decision records (ADRs) • Secure-by-default design, including rate limits, velocity checks, and idempotency • Ability to explain every line of AI-generated code shipped • Testing coverage for edge and failure cases • Working command of OWASP Top 10 • Knowledge of secrets management, input validation, and data handling • Strong written English • Collaborative, reasoning-based technical decision-making style

🏖️ Benefits

• 100% remote work • Work with an experienced team of developers and continuous development of your hard and soft skills • Long-term collaboration on challenging products