Lead Back-end Engineer (Node.js)

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      "postalCode": "10000",
      "addressCountry": "Croatia (Hrvatska)"
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    "datePosted": "2025-12-22",
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    "description": "<p><span><span>We’re</span><span> building a SaaS B2B platform where backend reliability, correctness, and latency directly shape customer trust and product adoption. </span><span>We’re</span><span> hiring a </span></span><span style=\"font-weight: bold\"><span><span>Lead Back-end Engineer</span></span></span><span><span> to raise the bar across our Node.js services, coach the team, and help us scale through the next growth phase—improving API response times, developer velocity, and operational maturity.</span></span><span> </span></p>\n<p><span><span>This is a </span></span><span style=\"font-weight: bold\"><span><span>hands-on leadership role</span></span></span><span><span>: you will still code, review, and ship</span><span>, </span><span>but your bigger impact is making everyone around you more effective through mentorship, architecture guidance, and engineering standards.</span></span><span> </span></p>\n<p><br><br></p>\n<p><span><span style=\"font-weight: bold\">Location:</span> <span style=\"font-size: 12pt\"><span>Zagreb (hybrid) or Remote (EU time zones)</span></span><span style=\"font-size: 12pt\"><span> </span><br></span></span></p>\n<p><span> </span></p>\n<p><span style=\"font-weight: bold\"><span><span>Technical leadership &amp; coaching</span></span></span><span> </span></p>\n<ul>\n<li><span><span>Coach and up-level backend engineers through pairing, code reviews, design reviews, and practical mentorship (API design, testing strategy, performance, operational best practices).</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Establish and evolve backend engineering standards: TypeScript practices, architecture patterns, code quality, documentation, and production readiness.</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Lead technical discussions and produce clear written artifacts (design docs, ADRs, technical proposals) to make trade-offs visible and decisions durable.</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Identify</span><span> skill gaps and run lightweight internal training sessions (workshops, examples, “how we do it” playbooks).</span></span><span> </span></li>\n</ul>\n<p><span style=\"font-weight: bold\"><span><span>Build scalable Node.js services</span></span></span><span> </span></p>\n<ul>\n<li><span><span>Design, implement, and evolve highly scalable backend services using </span></span><span style=\"font-weight: bold\"><span><span>Node.js + TypeScript</span></span></span><span><span>.</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Define service boundaries and data flows across microservices, queues, and event-driven workflows to support reliable </span><span>scale</span><span>.</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Improve “build → ship → operate” loops: CI/CD quality gates, safe rollouts, runtime resilience, and incident response habits.</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Own technical debt management: prioritize refactors that improve stability, developer experience, and delivery speed.</span></span><span> </span></li>\n</ul>\n<p><span style=\"font-weight: bold\"><span><span>REST + </span><span>GraphQL</span><span> excellence (</span><span>Hasura</span><span>)</span></span></span><span> </span></p>\n<ul>\n<li><span><span>Build and </span><span>maintain</span><span> robust </span></span><span style=\"font-weight: bold\"><span><span>REST APIs</span></span></span><span><span> (versioning, backwards compatibility, pagination, documentation, </span><span>authn</span><span>/</span><span>authz</span><span>, rate limiting).</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Design and operate </span></span><span style=\"font-weight: bold\"><span><span>GraphQL</span><span> APIs</span></span></span><span><span> with strong schema discipline and performance safeguards (N+1 prevention, batching, caching patterns).</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Use </span></span><span style=\"font-weight: bold\"><span><span>Hasura</span></span></span><span><span> effectively in production: permissions/roles, relationships, actions, event triggers, remote schemas—knowing when to lean on </span><span>Hasura</span><span> vs. custom Node services.</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Partner with product and frontend teams to ensure API contracts are clear, stable, and optimized for client usage.</span></span><span> </span></li>\n</ul>\n<p><span style=\"font-weight: bold\"><span><span>Performance, caching, and reliability</span></span></span><span> </span></p>\n<ul>\n<li><span><span>Drive API performance outcomes (p95/p99 latency) using caching, query optimization, and </span><span>appropriate precomputation</span><span> strategies.</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Implement and improve observability: metrics, traces, structured logs, dashboards, alerting, and SLO-driven improvements.</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Lead production incident response and follow-through: root cause analysis, postmortems, and systematic fixes that reduce recurrence.</span></span><span> </span></li>\n</ul>\n<p><span> </span></p>\n<p><span style=\"font-weight: bold\"><span><span>Qualifications</span></span></span><span> </span></p>\n<ul>\n<li><span><span>7+ years of backend engineering experience with </span></span><span style=\"font-weight: bold\"><span><span>deep Node.js </span><span>expertise</span></span></span><span><span> (TypeScript strongly preferred).</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Strong experience designing and </span><span>operating</span><span> </span></span><span style=\"font-weight: bold\"><span><span>RESTful APIs</span></span></span><span><span> at scale (auth, versioning, compatibility, rate limits, error handling).</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Production experience with </span></span><span style=\"font-weight: bold\"><span><span>GraphQL</span></span></span><span><span> (schema design, performance patterns, tooling).</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Hands-on experience with </span></span><span style=\"font-weight: bold\"><span><span>Hasura</span></span></span><span><span> (permissions, actions, remote schemas, event triggers, operating </span><span>Hasura</span><span> in real environments).</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Proven ability to mentor and coach engineers—raising standards through reviews, pairing, and guiding architecture decisions.</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Strong system</span><span> design fundamentals: distributed systems trade-offs, consistency models, caching, idempotency, failure modes.</span></span><span> </span><br></li>\n</ul>\n<p><span style=\"font-weight: bold\"><span><br></span></span></p>\n<p><span style=\"font-weight: bold\"><span><span>Strongly preferred</span></span></span><span> </span></p>\n<ul>\n<li><span><span>Background in </span></span><span style=\"font-weight: bold\"><span><span>SaaS B2B</span></span></span><span><span> (multi-tenant concerns, enterprise security expectations, auditability, SLAs).</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Experience running cloud-native services (containers/Kubernetes, CI/CD, observability stacks).</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Experience building high availability, high throughput services under real-world scale constraints.</span></span><span> </span></li>\n</ul>\n<p><span> </span></p>\n<p><span style=\"font-weight: bold\"><span><span>Stack (Typical)</span></span></span><span> </span></p>\n<ul>\n<li><span><span>Node.js + TypeScript services (modern frameworks such as </span><span>NestJS</span><span>/Express/</span><span>Fastify</span><span>)</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Hasura</span><span> </span><span>GraphQL</span><span> Engine (permissions, event triggers, actions, remote schemas)</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>PostgreSQL + Redis (or equivalents), background jobs/queues, event-driven architecture</span></span><span> </span></li>\n</ul>\n<ul>\n<li><span><span>Observability tooling (metrics, traces, logs), SLOs and alerting</span></span><span> </span></li>\n</ul>\n<p><br><br></p>\n<p><span style=\"font-weight: bold\">What We Offer</span></p>\n<ul>\n<li><span style=\"font-weight: bold\">Growth:</span><span> </span>Mentorship, learning budget, and time for experimentation and R&amp;D.</li>\n<li><span style=\"font-weight: bold\">Compensation:</span><span> </span>Competitive salary<span> </span>and equity.</li>\n<li><span style=\"font-weight: bold\">Tools &amp; Perks:</span><span> </span>Azure powered stack, top tier equipment (Apple or Microsoft), paid lunches, MultiSport<span style=\"font-weight: bold\"> </span>card.</li>\n<li><span style=\"font-weight: bold\">Culture:</span><span> </span>Fast‑moving, collaborative, and supportive - with a bias for action.</li>\n</ul>\n<p><br><br></p>",
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