Fullstack Consultant/Freelancer (JS/TS)

🏢 Summary: Opportunity for experienced Fullstack Consultants to join a verified freelance network supporting diverse projects such as greenfield development, MVPs, modernization, and consulting engagements. Collaboration is flexible (short-term, part-time, full-time) and project-based, depending on business needs and availability. Consultants are expected to independently deliver end-to-end solutions and support clients in outcome-driven initiatives. 🗂️ Requirements: Experience delivering end-to-end backend and frontend solutions, Ability to design software architecture and drive implementation to production, Experience estimating scope, timelines and engagement level, Ability to independently structure implementation work, Experience collaborating with technical and business stakeholders, Focus on software quality and maintainability, Active practical use of AI tools 📃 Skills: Backend, Frontend, Architecture, Estimation, AI, Prototyping, MVP, Consulting, Modernization, Delivery 🏢 Description: We are building a verified network of experienced freelancers and consultants who can support our clients in flexible cooperation models: from short-term delivery acceleration and MVP initiatives to outcome-based consulting engagements. This is not a traditional recruitment process. We are looking for experienced Fullstack Consultants interested in becoming part of network and open to future collaboration opportunities adjusted to project needs, availability and specialization fit. Remuneration depends on the type of assignment. For hourly rates, our range is 150-190 PLN net + VAT. What kind of projects may you support? Depending on business demand and your availability, potential engagements may include: greenfield product development, feature acceleration initiatives, modernization projects, MVP and rapid prototyping work, delivery reinforcement for existing engineering teams, consulting and outcome-based delivery projects, short-term high-impact initiatives. Examples of what you could do 👇 You should be capable of: independently delivering end-to-end technical solutions, collaborating directly with technical and business stakeholders, structuring implementation scope and estimating effort, balancing engineering quality with pragmatic delivery decisions. What would we expect? experience estimating implementation scope, delivery timelines and required level of engagement based on business needs, strong experience building end-to-end solutions across backend and frontend (from architecture design to implementation and production readiness), focus on software quality, maintainability and real business impact, active and pragmatic use of AI tools. No specific tech stack? That's intentional. We work with companies facing different challenges, so we're always open to professionals with unique combinations of skills and experience. If you can create value through technology, we'd love to hear from you. Important! joining the network does not guarantee immediate project allocation, potential engagements may vary in duration, scope and workload, part-time, full-time and short-term cooperation models are possible. By joining the network, you may gain: access to international projects and consulting initiatives, including collaborations with Scandinavian clients, opportunities adjusted to your availability, preferred engagement model and technical strengths, long-term relationship instead of one-off transactional recruiting processes. We want to build a high-quality network of experienced consultants we know, trust and can match with the right opportunities over time. Sounds like a fit? Let’s talk! 🚀

🏢 Summary: Opportunity for experienced Fullstack Consultants to join a flexible collaboration network supporting diverse client projects such as greenfield development, MVPs, modernization, and delivery acceleration. Engagements vary in scope and duration, focusing on end-to-end solution delivery and outcome-based consulting. Compensation is assignment-based with hourly rates in the 150–190 PLN net + VAT range. 🗂️ Requirements: Proven experience delivering end-to-end backend and frontend solutions, Ability to design architecture and deliver production-ready systems, Experience estimating scope, timelines, and level of engagement, Capability to independently structure and implement technical solutions, Experience collaborating with technical and business stakeholders, Strong focus on software quality and maintainability, Practical use of AI tools in development work 📃 Skills: Backend, Frontend, Architecture, APIs, Databases, Testing, DevOps, Git, AI, Estimation 🏢 Description: We are building a verified network of experienced freelancers and consultants who can support our clients in flexible cooperation models: from short-term delivery acceleration and MVP initiatives to outcome-based consulting engagements. This is not a traditional recruitment process. We are looking for experienced Fullstack Consultants interested in becoming part of network and open to future collaboration opportunities adjusted to project needs, availability and specialization fit. Remuneration depends on the type of assignment. For hourly rates, our range is 150-190 PLN net + VAT. What kind of projects may you support? Depending on business demand and your availability, potential engagements may include: greenfield product development, feature acceleration initiatives, modernization projects, MVP and rapid prototyping work, delivery reinforcement for existing engineering teams, consulting and outcome-based delivery projects, short-term high-impact initiatives. Examples of what you could do 👇 You should be capable of: independently delivering end-to-end technical solutions, collaborating directly with technical and business stakeholders, structuring implementation scope and estimating effort, balancing engineering quality with pragmatic delivery decisions. What would we expect? experience estimating implementation scope, delivery timelines and required level of engagement based on business needs, strong experience building end-to-end solutions across backend and frontend (from architecture design to implementation and production readiness), focus on software quality, maintainability and real business impact, active and pragmatic use of AI tools. No specific tech stack? That's intentional. We work with companies facing different challenges, so we're always open to professionals with unique combinations of skills and experience. If you can create value through technology, we'd love to hear from you. Important! joining the network does not guarantee immediate project allocation, potential engagements may vary in duration, scope and workload, part-time, full-time and short-term cooperation models are possible. By joining the network, you may gain: access to international projects and consulting initiatives, including collaborations with Scandinavian clients, opportunities adjusted to your availability, preferred engagement model and technical strengths, long-term relationship instead of one-off transactional recruiting processes. We want to build a high-quality network of experienced consultants we know, trust and can match with the right opportunities over time. Sounds like a fit? Let’s talk! 🚀

🏢 Summary: Mid-level Full-Stack Developer role focused on building and modernizing a cloud-based practice management and CRM platform. The position involves a 60/40 split between Angular frontend and Node.js/Nest.js backend, contributing to migration from monolith to microservices and upgrading to the latest Angular version. Fully remote (Poland-based) with strong impact on architecture and product quality. 🗂️ Requirements: 2–3 years of commercial experience in full-stack web development, Commercial experience or strong willingness to work with Angular, Experience with Node.js backend development, Practical knowledge of Nest.js, Basic knowledge of SQL, Experience or willingness to implement automated E2E tests, Polish residency, Working proficiency in Polish, Notice period of 1 month or less 📃 Skills: Angular, Node.js, Nest.js, SQL, Playwright, Microservices, Cloud, ORM, E2E 🏢 Description: Position: Full-Stack Developer Location: Remote (Poland-based) Salary: 14500 – 19500 PLN / month Our client is an innovative software company delivering a modern, cloud-based practice management and CRM solution dedicated to professional services. The platform streamlines day-to-day operations, including workload management and automated document generation. The development team is highly autonomous, focused on refactoring their core product from a monolith into scalable microservices, migrating to the newest technology stacks, and fostering an environment with strong developer ownership. We are looking for a mid-level Full-Stack Developer (approx. 2–3 years of commercial experience) to join a tight-knit Polish development team. In this role, you will work on both frontend and backend tasks (approx. 60% Front-End and 40% Back-End workload), having a real impact on technology choices and product quality. Requirements: Around 2–3 years of commercial experience in full-stack web development. Professional experience or strong openness to working with Angular (the project is currently on Angular 6 and undergoing a migration to the latest stable version). Solid knowledge of backend development using Node.js, preferably with Nest.js (used for all new microservices). Basic understanding of SQL (complex queries are supported by in-house ORM and AI tools, backed by thorough code reviews). Familiarity with or interest in testing practices (manual testing with beta users and expanding automated E2E tests using Playwright ). Polish residency and working proficiency in Polish (mandatory for active participation in daily sync meetings). Notice period of 1 month or less . Mindset focused on autonomy, taking ownership of tasks, and willingness to challenge the status quo. Responsibilities: Developing new features and maintaining the cloud-based platform (60% FE / 40% BE split). Actively participating in architecture modernization (refactoring the monolith into microservices and migrating the legacy frontend to the latest Angular version). Writing clean, maintainable code and participating in peer code reviews. Ensuring software quality through self-testing and implementing automated E2E test scenarios with Playwright. Onboarding smoothly into the codebase (handling smaller bug fixes and minor features in Month 1, progressing to designing and delivering a major complex feature by Month 3). Attending daily team synchronization meetings (at 10:00 AM Polish time). Offer: Salary: 14500 – 19500 PLN / month (depending on experience). Contract type: Long-term B2B Contract (open to both permanent-like cooperation and 12-month fixed contracts). Working model: 100% Fully Remote work. Flexible working hours (with core presence during the 10:00 AM daily sync). Hardware: Company-provided laptop and necessary equipment. No on-call duties or weekend shifts. Great culture: High levels of engineering autonomy, flat structure, and direct impact on the final product. Fast recruitment process: 3 stages (1h Live Coding data processing task $\rightarrow$ ~3h Homework assignment $\rightarrow$ 1h final CTO interview) with rapid feedback provided within 1–2 business days after each stage.

🏢 Summary: Short-term B2B contract for a Fullstack Developer (Node.js + TypeScript) to build and maintain backend services for a regulated digital capital market platform in the fintech domain. The role focuses on developing scalable APIs, integrating KYC/AML providers, and implementing authentication, authorization, and investor management features. The project emphasizes code quality, security, and collaboration with cross-functional teams. 🗂️ Requirements: 3+ years commercial experience with Node.js, Strong knowledge of TypeScript, Experience building REST APIs, Experience with NestJS or similar framework, Experience with Prisma ORM or similar ORM, Understanding of authentication and authorization, Experience with relational databases, Experience writing automated tests, Knowledge of clean code principles, English for daily communication 📃 Skills: Node.js, TypeScript, NestJS, Prisma, REST, SQL, Jest, Supertest, Authentication, Authorization 🏢 Description: Description We are a technology company that started its journey in 2008. Our main headquarters is located in the picturesque city of Poznań, nestled by the beautiful Malta lake. For more than 17 years, we have been assisting companies in developing and implementing innovative fintech solutions. Leveraging our expertise in areas such as blockchain, online payments, and more, our clients can invent and develop cutting-edge solutions and services that keep them at the forefront of innovation. FULLSTACK DEVELOPER B2B: 80-100 PLN / hour START - 1 JULY TERM - 6 WEEKS LOCATION: POLAND (REMOTE) *We offer a hybrid work model, allowing you to balance office presence with remote work. However, it's important to note that the role emphasizes a stronger presence in the office to foster teamwork and effective communication. Requirements Key Duties and Services: A Roadmap to Your Professional Success Your Mission : We are looking for a Fullstack Developer (Node. js + TypeScript) to join a fintech project focused on building a regulated digital capital market platform. The system supports investor onboarding, KYC/AML verification, investor classification, access control, audit logging, and digital wallet infrastructure. You will work closely with senior engineers and architects to build scalable backend services and integrations with fintech and blockchain-related providers. Scope of services: Developing and maintaining backend services using Node. js + TypeScript Building and extending REST APIs for onboarding, authentication, and user management Integrating external KYC/AML and identity verification providers Implementing business logic for investor classification and access control Creating and maintaining database models using Prisma ORM Writing unit and integration tests (Jest, Supertest) Participating in code reviews and technical discussions Collaborating with frontend, mobile, QA, and product teams Supporting code quality, security, and system reliability Here’s the set we are required: 3+ years of commercial experience with Node. js backend development Strong knowledge of TypeScript Experience building REST APIs and backend systems Experience with NestJS or similar frameworks Experience with Prisma ORM or similar Understanding of authentication & authorization concepts Familiarity with relational databases Experience writing automated tests (Jest, Supertest or similar) Strong understanding of clean code principles and best practices Good communication skills and English for daily cooperation Nice to have: Experience with class-validator / DTO-based validation Familiarity with GraphQL (Apollo) Experience in fintech / banking / regulated environments Knowledge of KYC/AML processes Exposure to blockchain, wallets, or digital assets Career Advancement at Your Fingertips: Explore Opportunities with Us By joining us you will get: Work on a modern fintech platform with real regulatory requirements Collaboration with experienced senior engineers and architects Opportunity to work with KYC/AML, identity systems, and fintech integrations Influence on system design and backend architecture decision A strong engineering culture focused on quality, security, and scalability Navigating the Hiring Process: What does the recruitment process for that position look like? HR Screening with Talent Acquisition Specialist (30 min) Technical Interview (60 min) Interview with Delivery Manager (30 min) Job Offer

🏢 Summary: Fullstack Developer role focused on building and scaling web-based MVP products from scratch, collaborating with cross-functional teams and leveraging AI tools to deliver scalable, secure, and high-quality solutions. The position involves roadmap ownership, architecture design, cloud deployment, and continuous product improvement based on metrics and user feedback. 🗂️ Requirements: Proven experience as Fullstack Developer with portfolio of web-based products, Strong knowledge of TypeScript or JavaScript, Knowledge of at least one: Python, Rust, or C#, Experience with React and JSX-based frameworks, Experience with Next.js, Understanding of cloud computing platforms and networking, Experience with Docker and CDN technologies, Knowledge of Edge Workers, Experience with data modeling, Experience with relational databases, Knowledge of PostgreSQL, Architecture design skills, Ability to use AI tooling for coding productivity, Familiarity with Agile methodologies, Experience with Jira or Linear 📃 Skills: TypeScript, JavaScript, Python, Rust, C#, React, Next.js, JSX, Docker, CDN, EdgeWorkers, PostgreSQL, SQL, Cloud, AI, Jira, Linear, Agile 🏢 Description: We’re a well-knit digital design studio working with products, brands and (no-)code. Founders come to us because we help them define, build and scale their MVPs. That means we gotta think beyond “u mnie działa” (though we love all the memes). You’re free to do the job your way, but the team is there for you. Doesn’t matter if you’re just in a pickle or need a real talk about your career — there’s always folks happy to give you a hand. And hey, we’re not here to point the finger at what to do. If you see something we can improve or know how to reach our goals — do it and get your cred. The team is already asking about you. Don't make them wait, apply! Your day-to-day Developing and maintaining the product roadmap & ensuring alignment with the project vision. Collaborating with cross-functional teams, including product design, engineering, no-code, to ensure that the product meets the desired specifications Defining growth metrics for individual products in cooperation with the team Writing code with help of AI to match the best standards of product development. Ensuring the product is scalable, reliable, and secure Testing the product thoroughly to identify and fix any issues before launch Monitoring the product's performance and user feedback after launch, iterating and improving as necessary It's a match if you're like this Proven experience as a Fullstack Developer or a similar role, with a portfolio of successful web-based products Solid skills how to leverage AI tooling for productivity gains. Strong knowledge of modern web development languages, TypeScript/JavaScript, and at least one of Python, Rust, C#. Experience with React/JSX-based web frameworks, preferably Next.js (app directory) Strong understanding of cloud computing platforms, networks, and associated technologies like Docker, CDN, Edge Workers, etc. Knowledge of data modeling and relational databases preferably PostgreSQL Architecture design skills Familiarity with Agile development methodologies and project management tools such as Jira or Linear Excellent communication and collaboration skills Passion for innovation and a desire to stay up-to-date with the latest development trends and technologies (nice to have) Bachelor's degree in Computer Science, Engineering, or a related field If you are a highly motivated and skilled Fullstack Developer looking for an exciting opportunity to create innovative products from scratch, we invite you to apply for this position. What you get Work wherever & whenever you want (but bonus points for being relatively close to our HQ) Unlimited budget for growth Unlimited hardware & software budget Paid time off and sick leave No overtime (but paid double if you volunteer) Dinners, retreats, and workations Worksmile cafeteria plan The process 1. You first Hit that big Apply button and tell us about yourself. 2. Vibe check Let’s jump on a call, so we can both figure whether it’s a fit. 3. Show off We’ll ask you to do a little task (that we’ll pay for) so we can see your wizardry. 4. Join the team One last interview to talk details and that’s it, you’re on board! Find out more at tonik.com

🏢 Summary: Fullstack Engineer role focused on building and scaling a data and analytics platform for investment decision-making, leveraging machine learning and strategic data. The position involves end-to-end development of production-grade applications, API integration, and ensuring platform scalability and performance in a hybrid work model. 🗂️ Requirements: 4+ years of experience with TypeScript and Node.js in production environments, Strong knowledge of HTML and CSS, Experience with SQL and PostgreSQL databases, Ability to design and integrate REST and GraphQL APIs, Experience with automated testing, pair programming, and peer review practices 📃 Skills: TypeScript, Node.js, HTML, CSS, SQL, PostgreSQL, GraphQL, REST, GCP, DevOps 🏢 Description: About the Project: Our client is a Swedish fintech company expanding in Poland. This project focuses on developing a data and analytics platform designed to revolutionize investment decision-making by leveraging machine learning and strategic data. As a Fullstack Engineer, you will design, develop, and maintain scalable solutions, collaborating with cross-functional teams to ensure the delivery of high-quality features. Work Mode : Hybrid – 2/3 days in the Warsaw office Job Responsibilities: Collaborate with cross-functional teams to ensure the delivery of high-quality features. Contribute to all stages of the development lifecycle. Design, develop, and maintain scalable solutions that support investment operations. Leverage machine learning and strategic data to deliver exceptional insights. Work closely with passionate professionals who believe in collaboration, innovation, and making a meaningful impact. Ensure the platform's scalability and performance through continuous improvement and optimization. Expectations: Must have: 4+ years of experience developing production-grade applications using TypeScript and Node.js Strong understanding of HTML, CSS, and design principles Knowledge of database management with SQL and PostgreSQL Experience with software craftsmanship practices, including automated testing, pair programming, and peer review Ability to write and integrate APIs in various formats such as GraphQL and Rest Nice to have: Experience with Google Cloud Platform (GCP) and DevOps practices. Familiarity with cloud-native development and scalable system architectures. We offer: Ongoing support from a dedicated agent who is caring about your project continuity, contact with clients, necessary formalities, work comfort, and development. Career Development Program – advice on career planning based on the latest trends and market needs in IT, including consultations with career agents and mentors. Access to 7N Learning & Development – a development and educational platform offering webinars, a library of articles and industry reports, and frequent invitations to both one-time and recurring events focused on technical, business, and lifestyle topics. Spectacular events, both for you (e.g., annual Kick-Off trip , Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g. family picnics), Professional growth Professional growth beyond your current project. You can actively engage in knowledge sharing through the 7N Services offering, designed for 7N clients. Connections and access to the expertise of top IT professionals in the market – the average professional tenure of our consultants in Poland is over 10 years, A complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad.

🏢 Summary: Fullstack Software Engineer role focused on designing, building, testing, and deploying cloud-based systems using modern software craftsmanship practices. The position involves end-to-end ownership of software delivery in a remote-first environment, leveraging AI-assisted development and clean architecture principles. You will work with a senior team to deliver scalable, high-quality solutions. 🗂️ Requirements: 3+ years experience with Java or Kotlin, 2+ years experience with JavaScript or TypeScript, Hands-on experience with SQL and NoSQL, Experience with AWS, GCP, or Azure, Experience with AI-assisted software development, Ability to design and deploy cloud-based systems, Experience with code reviews and automated testing 📃 Skills: Java, Kotlin, JavaScript, TypeScript, SQL, NoSQL, AWS, GCP, Azure, Microservices, DistributedSystems, EventDrivenArchitecture, TDD, BDD, DDD, Claude, Codex 🏢 Description: We are looking for a Fullstack Software Engineer who is hungry to deliver quality software at pace, by utilising the latest technology trends and modern Software Craftsmanship techniques, as well as learn the craft from a senior Team. Who are we ? We are a remote-first boutique software house company formed by a group of seasoned software experts (average experience in the team is 12 years). What connected all of us, despite a long-term relationship, is a passion for building Great Software that matters. We believe in people, so this is why the key values of Shaped Thoughts are autonomy and trust. Our people have a real and direct impact on what and how we build things. We put extra effort into ensuring everyone can make a difference and grow among other experts. Qualifications: 3+ years of professional experience with Java or/and Kotlin 2+ years of professional experience with JavaScript or/and TypeScript Hands-on experience with SQL and NoSQL Experience with cloud platforms (AWS / GCP / Azure) AI-assisted software development experience Nice to have: Microservices experience Understanding of distributed systems and event-driven architectures TDD, BDD practitioner Domain Driven Design knowledge As a part of the team you will : Design, implement, code review, test and deploy a cloud-based systems Develop software from start to finish - you ship it, you run it! Deliver quality technical solutions that come from a robust design and clean architecture Build & improve software delivery process using the latest tools such as Claude Code or Codex How do we work? We work as a team - all people can freely exchange knowledge and tasks, that’s why we’re looking for strong team players We believe in continuous improvement (Kaizen mindset) We’re happy to share knowledge and spend time learning our domain and new technologies We value asynchronous communication for work, however we meet in person to improve our personal relationships What do we offer ? Being a part of a strong senior team with the ability to learn and exchange knowledge Remote first work environment B2B rate 130-160 PLN / hour dependent on your level of expertise Open bounded B2B contract or contract of employment Recruitment process It consists of the following stages: CV screening Tech screening (45 min) Live coding session (1h) Architecture task (1h) At least one of the stages must be completed on-site in one of the major cities: Wrocław, Poznań, Katowice, Kraków, Warszawa or Gdańsk. We actively encourage AI-assisted development in our daily work. However, during recruitment we want to assess your individual skills - please don't use AI assistance unless explicitly permitted for a given stage.

🏢 Summary: Senior Fullstack Developer role focused on extending a HubSpot-based CRM with new frontend, backend, and integration functionalities in a fully remote setup. The position involves building custom modules, managing license and trial features, and ensuring reliable integrations between internal and external systems. The developer will take ownership of data flows, webhooks, and system reliability within a small cross-functional team. 🗂️ Requirements: Minimum 5 years of experience as Fullstack Developer, Strong knowledge of React, Strong knowledge of TypeScript, Solid experience with Node.js, Experience with API development, Hands-on experience with webhooks, Experience with system integrations, Ability to extend existing backend codebases, Experience with AI-assisted coding tools, English C1 level, Polish B2 level 📃 Skills: React, TypeScript, Node.js, APIs, Webhooks, HubSpot, CRM, LMS, Authentication, Integrations, Monitoring, Observability, Claude 🏢 Description: Senior Fullstack Developer (React / Node.js) – Fully Remote Location: Fully remote Working hours: 10:00–18:00 (UK time), no travel required Rate: PLN 120–160 / hour Project duration: Initial 2 months, extension very likely Client: International financial institution Process: 2 interview stages Team: 2 Developers, Project Manager, Architect About the Role We are looking for an experienced Senior Fullstack Developer to join a small, cross-functional team working on the expansion of an existing CRM system. The project focuses on extending a HubSpot-based solution with new frontend, backend, and integration functionalities. You will play a key role in designing and building a new custom HubSpot application for internal users, developing license and trial management features, and integrating multiple internal and external systems. The role combines hands-on development with ownership of integrations and data flow reliability. Responsibilities Design and develop a new custom module within an existing HubSpot application Build user-facing interfaces for internal HubSpot users Implement a management panel for customer trials and licenses Integrate the application with existing internal APIs Identify and implement missing backend functionalities Develop integration code in Node.js connecting LMS webhooks with the authentication system Automate user account creation based on LMS-triggered events Automate user roles and permissions assignment based on learning system data Ensure data consistency, reliability, and observability across systems Handle error management, retries, and monitoring of webhook-based flows Requirements Minimum 5 years of professional experience as a Fullstack Developer Very strong knowledge of React and TypeScript Solid experience with Node.js and API development Hands-on experience with webhooks and system integrations Ability to read, understand, and extend existing backend codebases Practical experience using Claude Code or similar AI-assisted coding tools English proficiency at C1 level (daily collaboration with international clients) Polish proficiency at B2 level or higher (internal team communication) What We Offer Fully remote work Competitive hourly rate: PLN 120–160 Sports card (Multisport or equivalent) Private medical healthcare Access to learning and training platforms Small, experienced team with a clear technical direction High likelihood of project extension after 2 months

🏢 Summary: Full-time Backend Developer role focused on building and maintaining scalable Node.js and TypeScript applications for US clients across various industries, including MVP-stage products. The position involves designing backend architecture, working with SQL/NoSQL databases, and collaborating in Scrum teams in a flexible, remote-first environment. The offer includes long-term cooperation and participation in diverse, technically challenging projects. 🗂️ Requirements: 2+ years commercial experience in Node.js, Experience with Node.js frameworks (Express.js, NestJS or similar), Strong proficiency in TypeScript, Experience with SQL databases, Experience with NoSQL databases, Knowledge of SOLID and KISS principles, Knowledge of design and architecture patterns, Experience with Docker, Experience with GitHub Actions, Basic experience with AWS services, Ability to use ORM or query builders (e.g. Prisma, Knex), English level B2, Polish level C1 📃 Skills: Node.js, TypeScript, JavaScript, Express, NestJS, Fastify, SQL, NoSQL, Prisma, Knex, Docker, AWS, GitHub, GitHubActions, React 🏢 Description: We are looking for skillful Backend Developers to join one of our teams working with US clients - referrals from the high-end American IT market. Our tech stack is built around React, Node.js and TypeScript. We are working with well-established companies and sometimes startups in their early stages (MVPs), which makes the job full of diversity and exciting challenges while crafting cutting-edge solutions. Enjoy the flexibility of working within the Polish time zone and collaborate with clients from diverse industries such as FinTech, SportsTech, MedTech, and many others. Required skills: 2+ years of commercial experience in Node.js, SQL and NoSQL DBs, knowledge of JS frameworks (e.g Express.js, NestJS), experience in TypeScript, SOLID and KISS, knowledge about design and architecture patterns, know how and why Docker and GitHub Actions works, basic usage of AWS services, English B2, Polish C1 Offer: B2B/UZL, paid days off, 100% remote (or hybrid/onsite - as you prefer), Polish time zone, flexible hours, full-time position, long-term contract, Scrum Teams Perks and Benefits: Budgets for self-development, integrations, healthcare & sport activities, Mentoring Program, Individual Career Path, Paid Time Off, Paid Health Break & more Tools you'll use: Apple MacBook Pro, Slack, GSuite, GitHub, Jira, Coda, FigJam Your future tasks and duties: Writing readable and easy-to-maintain JS/TS code with OOP flavor Writing documentation for delivered code Code review of other developers in the team Direct involvement with the design and modification of basic DB structures Propose improvements and share proactive ideas/solutions with the team to enhance the team's work processes Share insights with the team to diagnose issues and focus on solutions Actively participate in project discussions Listen to the client's needs and, after consulting the team, suggest solutions Support less experienced team members About you - Tech skills & Experience: 2+ years of commercial experience in Node.js Good experience with at least one Node.js backend framework (e.g. Express.js, NestJS, Fastify, etc) - you know most of its basic APIs/features, worked on at least 1-2 projects involving such technologies Strong proficiency in TypeScript. You have practical experience with static typing, advanced types, and configuring TS compilers, treating it as your primary language to build robust and type-safe backend applications Potentially worked with NoSQL databases and/or in-memory databases and utilized them as a data store Worked with SQL databases (integration-wise and as a basic design skill) with ORM or query builder tool (ie. Prisma, Knex) Knows the basics of building AI applications (RAG, Agents, etc.) Use AI effectively in their work About you - Soft Skills: English level B2 to cooperate with American clients Polish level C1 to communicate easily within the team Open-minded to new challenges (e.g. different frameworks) Understand the significance of MVP and prioritize the pursuit of excellence and high-quality outcomes, even amid tight project timelines. Communicate with the team to efficiently translate business complexities (user stories/tasks) into solutions (results/estimations) Staying on top with trends/news, sharing them, teaching others and aiming for the best quality solutions Strong problem-solving abilities to diagnose issues, suggest solutions, and make decisions based on project requirements Nice to have: Worked in Agile/Scrum on a daily basis consisting of people with similar skills and monitoring code quality on a daily basis Basic experience with AWS - used some services in specific cases Basic experience with Docker - know how to prepare and debug the environment and connect things up to work locally Worked in the very beginning of the product development/creation stage Understand the significance of MVP and aim to deliver top-notch results, even amid tight project timelines Recruitment process: CV Review Phone call with our Recruiter (15min) Soft-skills interview with our Recruiter (1h) Technical interview with our Specialists (2h) Decision and feedback 🥳 Meaningful projects, top-notch experts and value-driven workplace Sound good? Apply now!

🏢 Summary: Fullstack Developer role focused on building and maintaining backend services in Node.js and frontend applications in React/Next.js, with occasional involvement in smart contract development. The position involves working with databases, APIs, and collaborating across backend and blockchain teams in an onsite environment. The offer is targeted at senior-level engineers with strong production experience. 🗂️ Requirements: Strong Node.js/NestJS backend experience, Minimum 5 years of backend development experience, Minimum 2 years maintaining production applications, Strong React and TypeScript skills, Experience with database and API integration, Ability to work onsite in Warsaw (100%), English level B2 or higher 📃 Skills: Node.js, NestJS, Express, React, Next.js, TypeScript, PostgreSQL, MongoDB, API, EVM, SVM 🏢 Description: About BlockyDevs We build end-to-end applications combining fintech-grade reliability with Web3 innovation. Your Role As a Fullstack Developer, you’ll primarily work with Node.js on the backend, React on the frontend, and occasionally contribute to smart contract development. Responsibilities Develop backend services with *Node.js (NestJS/Express)** Build frontend apps with *React/Next.js + TypeScript** Work with databases (PostgreSQL, MongoDB) and APIs Occasionally contribute to smart contracts (EVM/SVM) Collaborate with design, backend, and blockchain teams Requirements Strong backend skills in Node.js/NestJS At least 5 years of experience in backend applications At least 2 years of experience in maintaining production applications Solid frontend skills in React + TypeScript Database and API integration knowledge Experience mentoring mid/junior developers English at least B2 level Ability to work 100% onsite from our office near Metro Plac Wilsona, Warsaw Nice-to-have Microservices and cloud deployment experience Web3 integrations knowledge Rates (B2B/Freelance) Senior: 120 - 180 PLN/h Recruitment Process 1. Intro Call (30 min) – Quick chat about your experience, expectations, and our projects. 2. Technical Interview / Task – Backend (Node.js) and frontend (React) focus, with some discussion of smart contracts. 3. Final Meeting – Culture/fit + project discussion. 4. Offer – Fast decision if it’s a match. 5. Process usually takes 2–3 weeks . 6. Feedback after each stage within a few days