Senior Backend Engineer (Node.js)

🏢 Summary: Development and ownership of a desktop application layer that captures and processes real-time meeting audio across Zoom, Teams, Meet, and Slack without bots, working close to the operating system on Windows and macOS. The role focuses on improving audio quality, performance, and native capabilities while ensuring high reliability of the recorder. You will independently ship production-grade features impacting users directly. 🗂️ Requirements: Strong C++ experience, Production experience with Windows media stack, Experience with real-time audio processing, Experience with WebRTC, Ability to work with system-level audio capture and OS permissions, Experience shipping desktop applications, Ability to work independently and own features end-to-end 📃 Skills: C++, WebRTC, Windows, macOS, ScreenCaptureKit, CoreAudio, Node.js, Electron, AWS, Kafka, MongoDB, ElasticSearch, Terraform 🏢 Description: About Bluedot Bluedot is an AI meeting platform used by over 100,000 companies, including The New York Times, Ajax, Jooble, Etsy and many others. We’re a profitable , fast-growing business backed by Google, OnDeck and strong angels — but importantly, we operate entirely on our own revenue . No burn rate. No dependency on fundraising. Our growth is stable and fully funded by the product itself. We build across Mobile, Desktop, and Chrome apps , focusing on real-time audio/video processing, large-scale distributed systems, and modern LLM features. Why we need you The key part of our product is a desktop app that captures meetings on Zoom, Teams, Meet, and Slack without a bot joining the call. That means working close to the operating system: capturing system audio, handling permissions, managing processes, and keeping everything stable across Windows and macOS. This is the part of the product users feel every day. If the recorder fails, nothing else matters. We need someone who can own this layer end to end and push it forward — better audio quality, support for more platforms, lower resource usage, and new native capabilities we haven’t shipped yet. You’ll work directly with the founders and CTO. No layers, no tickets pushed down a chain. You ship, users feel it within days. About you Strong C++, shipped to production Windows media stack Real-time audio experience Experience with WebRTC Bonus: macOS (ScreenCaptureKit, Core Audio) You ship independently Technologies Technologies: Node.js, Electron Infrastructure: AWS, Kafka, MongoDB, ElasticSearch, Terraform, AI Tools: Claude Code, Cursor What we offer Competitive salary + equity in the company. Remote or hybrid options available at WeWork offices. Minimal meetings, fully asynchronous culture, full autonomy Paid vacation, sick leave and days off. Will work with a modern tech stack and the latest LLM systems.

🏢 Summary: End-to-end Infrastructure Engineer role owning AWS architecture for a distributed, event-driven system that processes payments and documents with strict correctness guarantees. You will design, operate, and automate cloud infrastructure, CI/CD, observability, and data systems to ensure deterministic state, reliability, and zero-downtime deployments. The role combines infrastructure, backend awareness, and production ownership in a high-autonomy environment. 🗂️ Requirements: 6+ years building and operating production infrastructure, Deep operational expertise in AWS services, Strong Infrastructure as Code discipline (no manual console changes), Experience designing and running event-driven architectures, Strong knowledge of distributed systems concepts (ordering, idempotency, retries, recovery), Hands-on experience with PostgreSQL, Lambda, SQS, Redis, S3, Experience building and maintaining CI/CD pipelines, Strong focus on observability, monitoring, and alerting, Experience enforcing IAM least-privilege and managing cloud security, Ability to manage multi-environment infrastructure (dev, staging, prod) with parity 📃 Skills: AWS, Lambda, SQS, S3, Redis, PostgreSQL, CDK, SAM, CloudFormation, CI/CD, IAM, TypeScript, Node.js, React, Networking, Observability, Logging, Tracing 🏢 Description: About Blue Language Labs Blue is building the trust layer the AI economy has been waiting for — a protocol for structured, verifiable, multi-party agreements that execute deterministically, leave an audit trail, and work across any system. Think smart contracts, minus the blockchain overhead. Our products are already being built and tested with real integrations: PayNotes — Programmable payments with conditional capture, milestone releases, refunds, vouchers, and partner settlement. MyOS — SaaS orchestration layer for merchants and agents. Cross-platform trust, without writing a line of Blue Language yourself. The System You’ll Own MyOS processes documents, payments, and agent interactions through a distributed, event-driven pipeline where correctness isn’t optional. State must be deterministic, ordering must be exact, and failure must be recoverable without data loss or partial writes. A bad deployment here doesn’t just cause downtime — it can silently break processing guarantees across active sessions. Understanding why that matters, and building infrastructure that prevents it, is the job. The Role You will own features end-to-end — from the React component a merchant clicks to the Lambda function that settles their transaction to the AWS infrastructure that keeps it all standing. No handoffs between "front" and "back". No waiting for someone else to unblock you. This is a high-trust, high-autonomy role. You'll work directly with the founding team, your decisions will ship to production fast, and yes — you'll be on the hook when something breaks. What You Bring Deep AWS expertise across compute, messaging, storage, networking, and observability — not just familiarity, but operational instinct built from running things in production Strong IaC discipline — CDK, SAM, or CloudFormation; you version everything, you don’t click in consoles Understanding of distributed systems fundamentals: ordering guarantees, idempotency, at-least-once delivery, outbox patterns, partial failure recovery Experience operating event-driven architectures under load — you know what failure looks like before it becomes an incident Enough application-layer literacy to read TypeScript/Node.js code and understand what a service is doing, not just that it’s running Strong opinions about observability — structured logging, distributed tracing, dashboards built for on-call humans at mam What you get? Competitive B2B compensation based on experience Equity — own a piece of what you build Fully remote work in an async-first environment Direct collaboration with the founding team High autonomy and fast decision-making Small team, outsized impact Work on technology that is genuinely novel End-to-end ownership across product, systems, and production Protocols don’t get built by committees. They get built by small teams who understood the problem before anyone else did. What You'll Do Own all AWS infrastructure end-to-end — architecture, cost, security, reliability, and compliance. No infrastructure team above you. Design and maintain CI/CD pipelines that let engineers ship confidently and fast — zero manual steps from commit to production Build monitoring and alerting that surfaces real problems early: queue depth, processing failures, latency spikes, delivery anomalies — dashboards that tell you what’s actually wrong Manage PostgreSQL at scale — configuration, connection pooling, migration strategy, performance, backup and restore Keep real-time and async processing components healthy across Lambda, SQS, Redis, S3, and the services that connect them Enforce IAM least-privilege across the system — service-to-service trust, secrets management, network isolation Manage environments (dev / staging / prod) with infrastructure parity and clean promotion paths Own cost visibility and optimization across a growing AWS footprint Use modern AI tooling to accelerate infrastructure work and experimentation Requirements We’re not looking for someone to manage servers. We’re looking for an engineer who looks at a distributed, event-driven system and immediately sees the failure modes, the ordering edge cases, and the places where a misconfigured queue will silently corrupt state. Someone who automates everything, documents why, and gets angry when something requires a manual step. 6+ years building and running production infrastructure. Deep AWS knowledge and strong operational instincts. Infrastructure as Code only — no manual steps, no console dependency. Strong distributed systems thinking: ordering, retries, idempotency, recovery. Experience with PostgreSQL, Lambda, SQS, Redis, S3, and CI/CD. Obsessed with reliability, security, visibility, and automation. Comfortable owning critical infrastructure end to end. A process that is practical, clear, and respectful of your time We keep the sequence focused so both sides can understand fit, technical quality, and the shape of the work. Introductory conversation - Up to 60 minutes - A practical conversation about your background, the kind of work you want to do next, and the context behind the role. Take-home assignment - No live coding - We prefer to evaluate technical ability through a realistic take-home task that gives you time to think and show the quality of your approach. Technical interview - Up to 90 minutes - A deeper discussion with a technical leader or senior team member about your experience, engineering judgment, and approach to the assignment. Final review - Clear feedback and a timely decision - We gather feedback, review the process carefully, and aim to communicate clearly throughout.

🏢 Summary: End-to-end full-stack engineering role focused on building and operating a protocol for structured, verifiable multi-party agreements and programmable payments. You will design, ship, and maintain production systems across frontend, backend, and AWS infrastructure with full ownership and accountability. The role emphasizes distributed systems correctness, stateful event-driven architectures, and serverless cloud infrastructure. 🗂️ Requirements: 7+ years building and shipping production full-stack systems, Strong backend expertise in Node.js and TypeScript, Strong frontend development experience with React, Deep understanding of distributed systems concepts, Experience building stateful, event-driven systems, Hands-on production experience with AWS and serverless architectures, Experience with Infrastructure as Code using AWS SAM or CloudFormation, Strong PostgreSQL experience including schema design and performance tuning, Experience designing for idempotency, auditability, and deterministic execution, Ability to debug and stabilize production systems end-to-end, Strong knowledge of observability, monitoring, and incident response, Experience making architectural decisions around security, reliability, and cost, Ability to own features end-to-end from design to production 📃 Skills: Node.js, TypeScript, React, AWS, Lambda, APIGateway, SQS, SNS, EventBridge, IAM, CloudWatch, RDS, SAM, CloudFormation, PostgreSQL, SQL, Serverless, DistributedSystems, EventDriven, Idempotency, Observability, Monitoring, Logging, Alerting, Concurrency, Consistency, Security, LLMs, API 🏢 Description: About Blue Language Labs Every generation gets one protocol moment. TCP/IP. SMTP. HTTP. A small team writes the spec, ships the first implementation, and fifteen years later the entire world runs on it without knowing who built it. We’re at that moment for economic coordination. AI agents are being deployed everywhere, right now — negotiating, committing, paying, settling on behalf of every company that wants to stay competitive. In a few years there will be billions of them. The problem: there is no protocol for what happens between them. An agent can be smart. It cannot be governed. It can pay. It cannot make a payment conditional on something that actually happened. Agents from different organizations can talk. They cannot safely coordinate across company boundaries. Nobody has built that layer. We’re building it. Blue is a protocol for structured, verifiable, multi-party agreements that execute deterministically, leave an immutable audit trail, and run on existing financial rails. Smart contracts without blockchain. Governance without a platform. Trust without a middleman. PayNotes — programmable payments with conditional capture, milestone releases, automatic refunds, and partner settlement. Logic embedded directly into money movement. MyOS — orchestration layer for merchants and agents. Agentic workflows and cross-platform trust, without touching the protocol directly. The Role You will own features end-to-end — from the React component a merchant clicks to the Lambda function that settles their transaction to the AWS infrastructure that keeps it all standing. No handoffs between "front" and "back". No waiting for someone else to unblock you. This is a high-trust, high-autonomy role. You'll work directly with the founding team, your decisions will ship to production fast, and yes — you'll be on the hook when something breaks. What you get? Competitive B2B compensation based on experience Equity — own a piece of what you build Fully remote work in an async-first environment Direct collaboration with the founding team High autonomy and fast decision-making Small team, outsized impact Work on technology that is genuinely novel End-to-end ownership across product, systems, and production Protocols don’t get built by committees. They get built by small teams who understood the problem before anyone else did. What You'll Do Design and ship full-stack features across payments, document workflows, and agent orchestration Build and maintain stateful systems that demand idempotency, auditability, and safe retry logic Own AWS infrastructure — architecture decisions, serverless systems, IaC (SAM / CloudFormation), monitoring, cost, and security Work with PostgreSQL-backed services and event-driven components Use modern AI tooling (LLMs and coding agents) to accelerate development and experimentation Requirements We're not looking for someone to fill a seat. We're looking for an engineer who gets it — who sees a distributed system and immediately starts asking the right questions about state, consistency, and failure modes. Someone who ships and takes pride in what they ship. 7+ years of experience building and shipping production systems as a full-stack engineer Strong backend expertise in Node.js and TypeScript — not just building APIs, but designing systems that stay correct under load and failure Strong frontend skills with React , including the ability to build polished, production-ready product interfaces without depending on a separate frontend team Solid understanding of distributed systems : consistency, state transitions, concurrency, retries, failure handling, and eventual consistency trade-offs Proven experience building stateful, event-driven systems where correctness matters Hands-on experience with AWS in production, especially Lambda , API Gateway, SQS/SNS, EventBridge, IAM, CloudWatch, RDS, and serverless architecture patterns Strong experience with Infrastructure as Code , ideally AWS SAM and CloudFormation Strong PostgreSQL skills, including schema design, transactions, indexing, migrations, and performance tuning Experience designing systems with idempotency, auditability, and deterministic execution built in from the start Ability to debug and stabilize production systems end-to-end — across application code, infrastructure, data, and runtime behavior Strong grasp of observability , monitoring, logging, alerting, and incident response Good judgment around security, reliability, and cloud cost , with the ability to make pragmatic architectural trade-offs Ability and willingness to own features end-to-end — from product shaping to implementation, deployment, and post-release accountability Comfortable operating in a high-trust, high-autonomy environment with very little hand-holding Strong product and engineering judgment — you ask the right questions early, and you do not need heavy process to move fast responsibly Comfortable using LLMs, coding agents, and modern AI tooling as part of your development workflow Fluent English and Polish, written and spoken Nice to have Experience in payments, fintech, ledgering, settlement, or transactional systems Experience with document workflows , approvals, or multi-party business processes Experience working on systems of record or products with strict audit/compliance expectations Experience at an early-stage startup or in a small, high-talent engineering team Experience building products where reliability and system correctness matter more than shipping surface-level features A process that is practical, clear, and respectful of your time We keep the sequence focused so both sides can understand fit, technical quality, and the shape of the work. Introductory conversation - Up to 60 minutes - A practical conversation about your background, the kind of work you want to do next, and the context behind the role. Take-home assignment - No live coding - We prefer to evaluate technical ability through a realistic take-home task that gives you time to think and show the quality of your approach. Technical interview - Up to 90 minutes - A deeper discussion with a technical leader or senior team member about your experience, engineering judgment, and approach to the assignment. Final review - Clear feedback and a timely decision - We gather feedback, review the process carefully, and aim to communicate clearly throughout.

🏢 Summary: Junior AI Developer role focused on building and integrating LLM-based features, simple AI workflows, and early-stage agent systems in real-world production projects. The position emphasizes hands-on experimentation with AI tools and using web technologies as a foundation for developing intelligent systems. It is designed for students or early-career developers with practical experience in AI experimentation. 🗂️ Requirements: Active use of agentic coding tools (Claude, Codex, Cursor), Hands-on experimentation with LLMs (chatbots, automation, structured outputs), Understanding of LLM concepts and AI feature development, Knowledge of JavaScript or TypeScript, Knowledge of React or Next.js, Understanding of REST APIs, Experience integrating LLM APIs, Ability to design and iterate prompts, English C1 level 📃 Skills: JavaScript, TypeScript, React, Next.js, REST, APIs, LLM, OpenAI, Anthropic, Prompting, Git, Claude, Codex, Cursor 🏢 Description: About the Role At Blazity, we are building modern web applications and rapidly expanding into AI-powered systems — agents, automation, and LLM-based workflows . We are looking for a high-potential Junior AI Developer (student or early career) who is strongly interested in AI and LLMs , actively experiments with them, and wants to turn that into real-world, production experience. This is not a standard frontend role — this is an AI-first position , where web development is a tool to build intelligent systems. Our requirements AI-first mindset You actively use agentic coding tools like: Claude Code / Codex / Cursor You have experimented with AI , e.g.: building a chatbot automating tasks with LLMs generating structured outputs You are curious: how LLMs work how to build real AI features (not just use them) This role is for people who already do things with AI, not just read about it. Technical foundations Knowledge of: JavaScript / TypeScript React or Next.js (even small projects) Understanding of APIs (REST basics) Learning mindset You learn by building (projects > theory) You are comfortable making mistakes and iterating You are proactive and self-driven Big plus First experience with: OpenAI / Anthropic APIs prompt engineering (structured output, few-shot) You built: small AI apps (chatbot, automation, AI tool) GitHub projects showing AI experiments Participation in hackathons (especially AI-related) Other English C1 What You Will Do Work on real AI features Support development of: LLM-based features simple AI workflows early-stage agent-like systems Help with: prompt design and iteration testing and improving AI outputs building simple integrations with LLM APIs What we offer Hands-on experience with real AI systems in production Work with experienced engineers building AI solutions Fast growth path toward AI Engineer role Opportunity to work on real client projects (not toy problems) Location 100% remote from Poland

🏢 Summary: Frontend-leaning Fullstack Engineer role focused on building and owning end-to-end SaaS features using modern frontend frameworks, scalable backend services, and AI-driven automation tools. The position combines React/Next.js development with Node.js backend work, async systems, and production AI integrations. Strong emphasis on speed, ownership, and delivering reliable, high-scale systems. 🗂️ Requirements: 3+ years professional full-stack development experience, Strong proficiency in React.js and Next.js, Solid backend experience with Node.js (NestJS preferred), Experience integrating external APIs (authentication, pagination, retries, rate limits), Experience with asynchronous processing, queues, and background jobs, Hands-on experience with AI tools (OpenAI, Claude, Cursor), Strong SQL skills (PostgreSQL preferred), Experience building reliable systems (error handling, retries, observability), Fluent English and Polish 📃 Skills: React, Next.js, Node.js, NestJS, JavaScript, TypeScript, PostgreSQL, SQL, REST, WebSockets, gRPC, Kafka, BullMQ, LavinMQ, AWS, GCP, DigitalOcean, Fly.io, GitLab, OpenAI, Claude, Cursor, Golang, Elixir, Rust, BigQuery, ClickHouse 🏢 Description: At Web Impact, we’re more than just an email marketing agency and digital solutions provider. We build cutting-edge, socially impactful products that redefine how businesses operate in the digital world. We’re looking for a frontend-leaning Fullstack Engineer who enjoys building complex systems, integrating external services, and leveraging AI tools to speed up development and automate workflows. If you’re excited about combining modern frontend development with AI-driven workflows and automation tools like Claude Code, Cursor, and LLM frameworks , this one is for you. What You’ll Do Own and deliver end-to-end features across SaaS products and internal tools Build modern, high-performance frontends using Next.js and React.js Develop scalable backend services using Node.js / NestJS Design and integrate APIs (REST, WebSockets, external services) Build and maintain automation workflows and background jobs Work with async systems, queues, and event-driven architectures Integrate third-party services with real-world constraints (rate limits, retries, auth flows) Use AI tools to improve development speed, testing, and automation Collaborate directly with product, data, and leadership teams AI & Automation This role includes working with modern AI tooling and automation systems, with a strong focus on speed, ownership, and execution : Using tools like Claude Code, Cursor, and OpenAI SDK in daily development Building AI-driven workflows and integrations quickly and iteratively Automating repetitive processes (data handling, content, integrations) Applying LLMs in production with a pragmatic, results-first approach Taking full ownership of problems - from idea to production Shipping fast, testing in real conditions, and iterating based on outcomes Being accountable for delivery - not just writing code, but making things work end-to-end Prioritizing execution over perfection - speed is key What We’re Looking For 3+ years of professional full-stack experience Strong frontend skills in React.js / Next.js Solid backend experience with Node.js (NestJS preferred) Experience integrating external APIs (auth, pagination, retries, rate limits) Experience working with async processing, queues, and background jobs Hands-on experience with modern AI tools (OpenAI, Claude, Cursor, etc.) Good SQL skills (PostgreSQL preferred) Understanding of building reliable systems (error handling, retries, observability) Strong communication skills and ability to work cross-functionally Fluent in English and Polish Nice to Have Experience with Rust (async, Tokio, Axum) Experience with Elixir (Phoenix LiveView, GenServer) Understanding of distributed systems and architectures Experience with multi-region deployments and geo-distributed infrastructure Experience building systems with high parallelism (a large number of workers processing jobs concurrently) Familiarity with distributed databases and data consistency trade-offs Experience with multi-tenancy architectures (tenant isolation, scaling strategies) Experience working with high-throughput event pipelines Our Tech Stack Frontend: Next.js, React.js Backend: Node.js, NestJS, Golang, Elixir, Rust Data: PostgreSQL, BigQuery, ClickHouse Infra: AWS, Fly.io , Google Cloud, DigitalOcean Queues & Workers: LavinMQ, BullMQ, Kafka CI/CD: GitLab CI AI/ML & Automation: Proprietary GenAI models, OpenAI, Claude, internal tooling Integrations: REST, gRPC, WebSockets, external APIs with rate limits Why Join Us? Work on high-scale SaaS systems processing hundreds of millions of events daily , with real-time pipelines and data-heavy workloads. Ownership from day one - influence architecture, technology choices, and product direction. Collaborate with world-class engineers, AI specialists, and PMs. Innovation-first culture - explore cutting-edge frameworks and architectures. Fast execution, minimal bureaucracy, no unnecessary meetings Opportunity to work with modern AI tooling in production Competitive senior-level compensation and career growth. Social impact - contribute to automation products that empower businesses and communities. Our Streamlined Hiring Process Initial call Technical deep dive with our team Decision

🏢 Summary: The offer is for a Senior AI Fullstack Engineer to design and deliver production-ready, LLM-powered web applications using modern React and Next.js architecture. The role focuses on building autonomous agents, RAG systems, and AI-driven workflows integrated with enterprise-grade products. It involves end-to-end ownership of scalable AI solutions from architecture to deployment. 🗂️ Requirements: 8+ years experience as consultant or forward deployed engineer, Strong experience with Next.js (App Router), React, TypeScript, Deep understanding of Server and Client Components (RSC), Experience with streaming, caching, revalidation, Server Actions, Experience with Vercel AI SDK, LangGraph or MCP, Experience building RAG systems, Hands-on experience with Anthropic and OpenAI APIs, Experience shipping LLM-powered features to production, Practical experience with prompt engineering and structured outputs, Experience with tool calling and agent workflows, Experience with multi-turn orchestration, Understanding of token economics and context windows, Experience with prompt evaluation methods, Ability to design robust, production-ready AI systems 📃 Skills: Next.js, React, TypeScript, RSC, Vercel, LangGraph, MCP, RAG, Claude, OpenAI, Anthropic, Prompting, Streaming, ServerActions, Agents, APIs 🏢 Description: About the Role At Blazity, we are a team of React.js and Next.js experts building modern, API-first digital products for enterprise clients. We are expanding our AI capabilities—autonomous agents, AI-driven automation, and LLM-powered workflows—and are looking for a Senior AI Fullstack Engineer who can design and ship production-ready AI systems. You will work at the intersection of modern web architecture and generative AI , taking ownership of solutions delivered to real users. Our requirements Must-have Technical Excellence: 8+ years of experience as a consultant / forward deployed engineer Strong experience with Next.js (App Router), React, TypeScript Deep understanding of: Server vs Client Components (RSC) streaming, caching, revalidation, Server Actions Vercel AI SDK / LangGraph / MCP Experience building RAG systems Claude extended thinking / prompt caching / Batch APIs AI Engineering: Proven experience shipping LLM-powered features to production Hands-on with Anthropic / OpenAI APIs (messages, tool use, streaming) Practical experience with: prompt engineering (structured output, few-shot, XML) tool calling / agent workflows multi-turn orchestration Understanding of: token economics (input/output costs, context window) latency vs quality trade-offs Reliability & Quality: Experience with: prompt evaluations (LLM-as-judge, rule-based) handling hallucinations and failure modes Ability to design robust AI systems , not just prototypes Soft Skills: Strong ownership mindset Experience working directly with clients Clear communication and structured thinking (English C1) Ability to make decisions in ambiguous environments Nice-to-have: What You Will Do Ship Production Apps: Build scalable web applications using Next.js (App Router) and TypeScript , ensuring high performance and clean architecture. Engineer AI Workflows: Develop and orchestrate LLM-powered features using Anthropic and OpenAI APIs, focusing on tool use and streaming. Agentic Orchestration: Design autonomous agent loops and multi-turn workflows, knowing when to use a structured pipeline versus a dynamic agent. Optimize & Evaluate: Manage token economics (pricing, context windows) and implement prompt evaluations (LLM-as-judge, rule-based) to ensure system reliability. Collaborate: Work directly with senior engineers, founders, and client teams to shape AI capabilities from concept to production. What we offer B2B: 120 – 180 PLN/h + VAT 🔥 100% remote (Poland) 29 paid vacation days Private healthcare + sports card High-impact work on real AI systems

🏢 Summary: Frontend role focused on building and maintaining modern React and Next.js applications enhanced with generative AI capabilities. The position involves integrating LLM-powered features into production systems and collaborating directly with enterprise clients on AI platform solutions. It combines advanced frontend engineering with practical AI implementation in real-world environments. 🗂️ Requirements: 3–5 years commercial experience with React, Next.js, TypeScript, Strong knowledge of Next.js including App Router, Understanding of React Server Components and Server Actions, Experience building and maintaining production-grade web applications, Experience integrating AI-powered features into applications, Hands-on experience with OpenAI or Anthropic APIs, Knowledge of streaming responses, structured outputs, tool calling, prompt engineering, Experience with Git and CI/CD workflows, Experience with AI-assisted development tools, Fluent English (C1+) 📃 Skills: React, Next.js, TypeScript, JavaScript, OpenAI, Anthropic, LLM, Git, CI/CD, AppRouter, RSC, ServerActions, PromptEngineering, Vercel, MCP, RAG 🏢 Description: Frontend React/Next.js Developer with AI Mindset About Blazity At Blazity, we are a team of AI engineering experts building AI-powered products, agents, and intelligent workflows on top of modern web technologies. We partner with enterprise clients as trusted technology advisors, helping them build scalable products that combine exceptional user experiences with cutting-edge AI capabilities. We believe the best frontend engineers today are AI-native engineers. They don't just use AI tools to write code — they understand how AI products work, how LLM-powered features are designed, and how to deliver reliable experiences for real users. We're looking for a Frontend React/Next.js Developer with an AI mindset who wants to work on products at the intersection of modern frontend engineering and generative AI. About the Project You'll join a team working with a leading enterprise AI platform helping organizations evaluate, monitor, and improve the reliability and performance of AI systems deployed in production environments. This is a client-facing role. You'll collaborate directly with client engineers, product teams, and stakeholders while helping deliver business-critical solutions. Excellent communication skills and fluent English are essential, as you'll participate in technical discussions and day-to-day collaboration with international teams. Must-have Technical Skills 3–5 years of commercial experience building applications with React, Next.js, and TypeScript. Strong understanding of modern Next.js development, including App Router. Good understanding of React Server Components and Server Actions. Experience building and maintaining production-grade web applications. Experience integrating AI-powered functionality into products. Hands-on experience with OpenAI and/or Anthropic APIs. Familiarity with: streaming responses, structured outputs, tool calling, prompt engineering fundamentals. Experience working with Git and modern CI/CD workflows. Experience using AI-assisted development tools such as Claude Code, Cursor, Windsurf, GitHub Copilot, or similar. Soft Skills Strong communication skills and active listening. Ability to work directly with clients and stakeholders. Ownership mindset and proactive approach to problem-solving. Ability to collaborate effectively within cross-functional teams. Adaptability and willingness to learn new technologies. English at C1 level or higher (written and spoken). Nice-to-Have Experience with Vercel AI SDK. Experience with MCP (Model Context Protocol). Exposure to Agent SDKs. Experience building RAG-based solutions. Previous experience in consulting environments. What You Will Do Build Modern Applications Develop and maintain scalable applications using React, Next.js, and TypeScript. Deliver high-quality, maintainable, and performant frontend solutions. Collaborate with designers, engineers, and product stakeholders. Build AI-Powered Features Integrate OpenAI and Anthropic models into production applications. Develop AI-powered workflows and user experiences. Implement streaming, tool usage, and structured outputs. Collaborate with Clients Participate in technical discussions and project workshops. Work directly with client stakeholders and engineering teams. Help translate business requirements into technical solutions. Grow as an AI Engineer Learn modern AI engineering practices from experienced team members. Gain hands-on experience building real-world AI-powered products. Contribute to projects at the forefront of AI adoption. What Makes Us Special? 📈 Our team has a genuine impact on the company’s decisions and direction. ✨ No bureaucracy – we keep things simple and efficient. 🗺️ 100% remote work from Poland. ⏳ Flexible working hours. 🤝 Open communication and continuous feedback. 🏥 Health insurance fully covered by us. 🏃 Sports card fully covered by us. 🌴 29 paid days off. 🍕 Team gatherings and social events. Employment Details B2B: 80–120 PLN net + VAT / hour Location: 100% remote from Poland

🏢 Summary: Backend-heavy Fullstack Engineer role focused on building and scaling a cyber risk reporting platform used by US MSPs. The position centers on designing and owning Node/NestJS backend systems, including integrations, job queues, and data modeling, within a fast-paced product environment. You will work closely with a small, autonomous team shipping features every sprint using AI-assisted development tools. 🗂️ Requirements: Minimum 2 years commercial backend experience in Node.js or NestJS, Production experience designing schemas and writing database migrations, Hands-on experience building and debugging job queues, Experience integrating third-party APIs on the backend, Solid knowledge of TypeScript, Working experience with React, Practical experience with PostgreSQL, Practical experience with Redis, Experience using Docker, Use of AI development tools, Fluent English, Availability to work evening hours aligned with US (UTC-6) team 📃 Skills: Node.js, NestJS, TypeScript, React, PostgreSQL, Redis, Docker, BullMQ, TypeORM, Auth0, Swagger, Express, Fastify, ConnectWise, Autotask, Kaseya, Microsoft365, GoogleWorkspace 🏢 Description: We're The Digital Bunch, a cross-disciplinary digital consultancy with offices in Warsaw, Riyadh, Sydney, and London. We combine strategy, design, and technology to help companies grow. Software development is one of our core verticals, and we embed with product companies long-term as part of their engineering teams. This role is for our work on a cyber risk reporting platform. The product scans networks, endpoints, and cloud environments (Microsoft 365, Google Workspace), checks breach databases, and generates risk reports with an AI layer on top for analysis and recommendations. The reports are sold to MSPs in the US who use them to show clients where they stand on security. It's cyber tooling, nothing else. The platform has been live for 5+ years, was acquired last year by a larger company (100+ people), and is actively growing. New features ship every sprint. The codebase is mature but moves fast. You'd join a small team on our side: our CTO and one other developer. On the client side in Dallas there's a PM, QA, support, and two engineers, plus people from the parent company who rotate in when needed. Flat setup, a lot of independence. We write code with Cursor and Claude Code every day. Not as a gimmick, that's how we actually work. If you're already using AI tooling, good. If not, you'll pick it up in the first week. ⚠️ Read this first, this is a backend-heavy role Most of the interesting work lives on the server: job queues, third-party integrations, data modeling, async scans, report generation. The frontend matters, but it's not where you'll spend most of your time. If your experience is mostly React with some REST calls, this isn't the right role. We need someone who's actually built and owned Node/NestJS backends in production, schemas, queues, integrations, migrations, the whole thing. We're happy to consider someone with ~2 years of experience if those two years are genuinely backend-heavy. We're not happy to consider 6 years of frontend with a skills-list backend section. ⏰ Working hours, read this too The client team is in Dallas, Texas (UTC-6). You need to be available in the evenings: - Daily standups happen between 19:00–21:00 Polish time, 30–45 minutes - Monday planning runs at 23:00 Polish time - The rest of the day is yours. Most people work something like 12:00–20:00 or 14:00–21:00 - No weekends, no on-call If you can't do evenings, this isn't the right fit. Wanted to be upfront about that. 📌 The work You'll ship features across the full stack, weighted toward the backend: NestJS on the server, PostgreSQL and Redis underneath, React on the frontend. The backend integrates with 15+ external services (breach intelligence APIs, cloud provider APIs, PSA systems like ConnectWise), runs BullMQ job queues, and uses TypeORM and Auth0. There's always something new to wire up. About 10% of your time goes to triaging production issues reported by customers. That's engineering debugging, not answering support tickets. Small team means you have real input into what gets built and how. Nobody's handing you pixel-perfect Jira tickets. We ship behind feature flags, get it in front of users fast, and iterate. If you're the type who spends three weeks perfecting architecture before writing a line of code, this isn't your pace. First-day commits. Our CTO onboards you personally, but we expect you shipping from the start. 👉 What we're looking for - At least 2 years of commercial backend work in Node.js / NestJS (or a close equivalent, Express or Fastify with real production ownership). We'll ask about it. - You've designed schemas, written migrations, debugged queues, and integrated third-party APIs, not just consumed them from a frontend - Solid TypeScript and React. You don't need to be a CSS wizard, you need to be comfortable moving across the stack - Hands-on with PostgreSQL, Redis, Docker - You use AI tools for development (Cursor, Claude Code, Copilot, whatever works for you) - Fluent English, spoken and written. You're on daily video calls with Americans - Actually okay with working late Polish hours (see above) - Self-directed. Nobody assigns you tasks step by step 👍 Bonus points - Worked in cybersecurity, SOC/SIEM tooling, or compliance before - Know your way around BullMQ, TypeORM, Auth0, or Swagger codegen - Built integrations with PSA systems (ConnectWise, Autotask, Kaseya) or MSP-facing tooling - Worked with US-based teams or in product companies 🚫 Probably not for you if - Your CV lists React/Next/Tailwind projects and the backend section is a skills list with no project evidence - You've mostly consumed REST APIs, not built them - Your backend experience is a single side project or a bootcamp module - You want to spend most of your day on UI polish 🎉 What you get - 20,000–26,000 PLN net/month, B2B - Fully remote, or Warsaw office in central Warsaw (dogs welcome) - Long-term product work on a single platform, not project hopping - Latest hardware and tooling - Multisport card - Regular salary reviews - Referral bonuses 💃 Hiring process 1. Intro call with Alex (CTO). 15–30 min. We talk about the role, you ask questions, and we see if it makes sense for both sides. 2. Take-home task. Build a small full-stack app (React + NestJS). The NestJS side carries most of the weight. Capped at 2 hours. Use AI tools, we don't care how you get there, we care that it works and you understand it. 3. Live review. 60 min. You walk us through your code, we ask you to add a feature live (should take minutes with AI, not half an hour), then we talk architecture and how you think about systems. 4. Meet the client team. Short call with the Dallas side before we finalize.

🏢 Summary: Frontend-leaning Fullstack Engineer role building high-scale SaaS systems with modern React/Next.js frontends and Node.js/NestJS backends, heavily leveraging AI tools and automation. You will design APIs, async systems, and event-driven architectures, integrate external services, and ship MVPs to production with ownership and speed. The role emphasizes AI-driven workflows, rapid experimentation, and scalable, production-ready systems. 🗂️ Requirements: 2.5+ years professional full-stack experience, Strong React.js and Next.js skills, Backend experience with Node.js (NestJS preferred), Experience integrating external APIs (auth, pagination, retries, rate limits), Hands-on experience with modern AI tools (OpenAI, Claude, Cursor), Strong SQL skills (PostgreSQL preferred), Experience with async processing, queues, background jobs, Understanding of reliable systems (error handling, retries, observability), Fluent English and Polish 📃 Skills: React, Next.js, Node.js, NestJS, SQL, PostgreSQL, REST, WebSockets, OpenAI, Claude, Cursor, LavinMQ, BullMQ, Kafka, AWS, GCP, Fly.io, DigitalOcean, BigQuery, ClickHouse, Golang, Elixir, Rust, gRPC, GitLabCI 🏢 Description: At Web Impact, we’re more than just an email marketing agency and digital solutions provider. We build cutting-edge, socially impactful products that redefine how businesses operate in the digital world. We’re looking for a frontend-leaning Fullstack Engineer who enjoys building complex systems, integrating external services, and leveraging AI tools to speed up development and automate workflows. If you’re excited about combining modern frontend development with AI-driven workflows and automation tools like Claude Code, Cursor, and LLM frameworks , this one is for you. What You’ll Do Develop and contribute to end-to-end features across SaaS products and internal tools, collaborating with senior engineers on architecture and implementation decisions. Build modern, high-performance frontends using Next.js and React.js Develop scalable backend services using Node.js / NestJS Design and integrate APIs (REST, WebSockets, external services) Build and maintain automation workflows and background jobs Work with async systems, queues, and event-driven architectures Integrate third-party services with real-world constraints (rate limits, retries, auth flows) Use AI tools to improve development speed, testing, and automation Collaborate directly with product, data, and leadership teams Build MVPs, proof-of-concepts, and new product ideas from scratch Rapidly validate business ideas through experimentation and iteration Help evolve successful prototypes into production-ready systems AI & Automation This role includes working with modern AI tooling and automation systems, with a strong focus on speed, ownership, and execution : Using tools like Claude Code, Cursor, and OpenAI SDK in daily development Building AI-driven workflows and integrations quickly and iteratively Automating repetitive processes (data handling, content, integrations) Applying LLMs in production with a pragmatic, results-first approach Taking ownership of problems - from idea to production Shipping fast, testing in real conditions, and iterating based on outcomes Being accountable for delivery - not just writing code, but making things work end-to-end Prioritizing execution over perfection - speed is key What We’re Looking For 2,5+ years of professional full-stack experience Strong frontend skills in React.js / Next.js Backend experience with Node.js (NestJS preferred) Experience integrating external APIs (auth, pagination, retries, rate limits) Hands-on experience with modern AI tools (OpenAI, Claude, Cursor, etc.) Good SQL skills (PostgreSQL preferred) Experience working with async processing, queues, and background jobs Understanding of building reliable systems (error handling, retries, observability) Strong communication skills and ability to work cross-functionally Fluent in English and Polish Nice to Have Experience with Rust (async, Tokio, Axum) Experience with Elixir (Phoenix LiveView, GenServer) Understanding of distributed systems and architectures Experience with multi-region deployments and geo-distributed infrastructure Experience building systems with high parallelism (a large number of workers processing jobs concurrently) Familiarity with distributed databases and data consistency trade-offs Experience with multi-tenancy architectures (tenant isolation, scaling strategies) Experience working with high-throughput event pipelines Our Tech Stack Frontend: Next.js, React.js Backend: Node.js, NestJS, Golang, Elixir, Rust Data: PostgreSQL, BigQuery, ClickHouse Infra: AWS, Fly.io , Google Cloud, DigitalOcean Queues & Workers: LavinMQ, BullMQ, Kafka CI/CD: GitLab CI AI/ML & Automation: Proprietary GenAI models, OpenAI, Claude, internal tooling Integrations: REST, gRPC, WebSockets, external APIs with rate limits Why Join Us? Work on high-scale SaaS systems processing hundreds of millions of events daily , with real-time pipelines and data-heavy workloads. Ownership from day one - influence architecture, technology choices, and product direction. Collaborate with world-class engineers, AI specialists, and PMs. Innovation-first culture - explore cutting-edge frameworks and architectures. Fast execution, minimal bureaucracy, no unnecessary meetings Opportunity to work with modern AI tooling in production Competitive senior-level compensation and career growth. Social impact - contribute to automation products that empower businesses and communities. Our Streamlined Hiring Process Initial call Technical deep dive with our team Decision

🏢 Summary: Forward-Deployed AI Engineer role focused on leading Next.js frontend migrations and delivering production-grade AI solutions for enterprise clients. The position combines hands-on TypeScript development, architectural optimization, and implementation of LLM-powered and agentic systems. The engineer works directly with client teams to modernize platforms and enable scalable, high-performance applications. 🗂️ Requirements: 5+ years of software engineering experience, 2+ years in customer-facing technical role, Expert-level TypeScript proficiency, Deep knowledge of Next.js and React ecosystem, Experience with SSR, SSG, and Server Components, Production experience with LLMs and AI workflows, Experience leading frontend migrations, Ability to conduct code audits and performance optimization, Experience building production-ready applications 📃 Skills: TypeScript, JavaScript, Next.js, React, LLMs, AI, SSR, SSG, ISR, Node.js, APIs, Edge, Streaming 🏢 Description: About Blazity Blazity is a team of React.js and Next.js experts building modern, API-first digital products. We partner with enterprise clients as trusted technology advisors, delivering solutions that span complex web platforms, e-commerce ecosystems, and custom software products. Recently, we’ve been expanding our AI capabilities—autonomous agents, AI-driven automation, and LLM-powered workflows—helping companies unlock operational efficiency and innovate at scale. About the Role We’re looking for a Forward-Deployed AI Engineer to work directly with our enterprise clients, helping them modernize frontend systems, implement AI solutions, and transform workflows. You’ll be hands-on, building production-ready systems, guiding migrations, and helping clients realize measurable business outcomes. What You’ll Do Lead complex frontend migrations to Next.js, modernizing legacy React, Vue, or other frameworks. Conduct technical assessments and code audits—analyzing performance bottlenecks, architectural anti-patterns, and optimization opportunities. Architect and implement high-performance applications leveraging Next.js, Server Components, streaming, ISR, edge functions, and advanced rendering strategies. Build production AI solutions, including agentic workflows, autonomous agents, and LLM-powered systems. Work directly with client teams to develop production-ready TypeScript code and train client engineers to maintain and extend the solutions. Drive enablement through workshops, pair programming, and documentation. Participate in pre-sales and solution scoping, providing technical expertise for migrations, AI transformations, and audits. Contribute reusable patterns, libraries, and best practices to Blazity’s internal AI and frontend tooling. About You: 5+ years of software engineering experience, including 2+ years in a customer-facing technical role (consulting, solutions engineering, forward-deployed engineering, or technical founder experience). Expert in TypeScript and comfortable shipping production code daily. Deep knowledge of Next.js and React ecosystem, including migrations, SSR/SSG, Server Components, and performance optimization. Production experience with LLMs, AI SDKs, and agentic workflows. High agency, comfortable in ambiguity, and able to navigate complex enterprise environments. Strong consulting and communication skills—able to translate technical capabilities into business value. Bonus Points: Experience leading enterprise AI transformation initiatives. Familiarity with multi-agent orchestration, tool calling, or Model Context Protocol (MCP). Contributions to open-source Next.js, React, or AI SDK projects. Enterprise deployment experience, including security, compliance, and multi-region architectures. What we offer 💼 B2B contract with competitive rate 🌍 100% remote work 🚀 High-impact, hands-on role delivering cutting-edge AI solutions for enterprise clients 🧠 Collaboration with senior engineers, founders, and client teams shaping AI capabilities 🌴 29 paid vacation days 🏥 Private medical insurance fully covered 🏋️ Fully paid sports card Salary ranges B2B: 100-120 zł/h + VAT Location 100% Remote from Poland