Senior Full Stack Software Engineer

🏢 Summary: Senior Full Stack Software Engineer role focused on building and maintaining large-scale, cloud-based data processing and web applications in AWS, with emphasis on serverless architectures. The position involves designing scalable microservices, developing modern frontend applications, and enhancing cloud infrastructure in a distributed international team. 100% remote work with strong focus on scientific and data-intensive systems. 🗂️ Requirements: Minimum 5 years enterprise software development experience, Expert knowledge of Java with Spring and Hibernate/JPA or other JVM languages, Strong expertise in JavaScript and TypeScript with Angular 5+ or React, Understanding of microservices architecture and design patterns, Experience building REST APIs, Experience with SQL, NoSQL and graph databases, Strong knowledge of AWS cloud services, Experience with Docker and containerization, Ability to deploy code to production environments, Experience with Git and GitOps workflows, Experience working with Scrum methodology 📃 Skills: Java, Spring, Hibernate, JPA, JVM, JavaScript, TypeScript, Angular, React, HTML5, AWS, S3, IAM, EC2, ECR, ECS, Lambda, Serverless, Docker, SQL, NoSQL, GraphQL, REST, Git, GitOps, Scrum 🏢 Description: Full Stack Software Engineer Our team, specializing in Data Engineering and Bioinformatics systems development, is actively seeking experienced and motivated senior Fullstack software engineer with hands-on AWS experience , as this position touches the development of data processing in the cloud (mainly AWS) on a very large scale. We invite individuals who are self-motivated and proactive to join us in the development of large-scale scalable computations utilizing AWS services particularly focusing on serverless paradigms. This role involves leveraging AWS services and enhancing our current infrastructure to streamline and future-proof existing solutions. 100% remote work Job Responsibilities Work together in a collaborative and practical manner to address scientific software engineering challenges. Design, build and maintain the web application providing visibility to our data management platform Collaboratively and pragmatically solve scientific software engineering challenges. Collaborate with local - Polish, the US and Canada engineering teams to support software development efforts. Contribute to the broader scientific community through open-source software development. Expectations Minimum 5 years of work experience related to software development in enterprise projects/products and expert knowledge regarding one of the following backend technologies: JAVA  (very good  knowledge of frameworks like Spring, Hibernate / JPA,   knowledge of other JVM based programming languages is a plus); Understanding of microservice architectures, principles and patterns Expert knowledge of Javascript and TypeScript programming (Angular 5+ or React, with good knowledge of HTML5. Experience building reusable web components. Knowledge of git and standard GitOps workflow (MRs, protected branch), conventional commits, semantic versioning, pre-commit hooks, Experience building APIs , good understanding of REST principles Knowledge of database techniques like SQL, NoSQL and graph databases Fluent in the usage of cloud computing models (IaaS, PaaS, SaaS) and good knowledge of containers connected with this DevOps mindset and excellent knowledge of cloud platforms like AWS. Ability to deploy yourself code to production Docker (must have) AWS cloud (including S3, IAM, EC2, ECR, ECS, AWS Lambda, Serverless) Experienced in product development with Scrum methodologies Experienced in designing software components based on limited and evolving requirements Attention to details, focus on user/developer experience Ability to coordinate work and direct collaboration with the customer Good communication skills, team player, work under tight deadlines. We Offer Ongoing support from a dedicated agent , ensuring project continuity, client contact, formalities, work comfort, and development Consultant Development Program – advice on growth planning based on the latest trends and market needs in IT Access to 7N Learning & Development – webinars, articles, industry reports, and invitations to technical, business, and lifestyle events Spectacular integration events for you and your loved ones (Kick-Off trips, Christmas parties, family picnics, etc.) Professional development opportunities beyond the project, including knowledge-sharing initiatives Relationships and access to the most experienced IT experts – average tenure of consultants in Poland is over 10 years Complete benefits package , including medical care, life insurance, sports cards, and store discounts About 7N Constantly searching for projects, difficult rate negotiations, lack of development support – sound familiar? At 7N, you gain not only stability of contracts but also the personal involvement of a dedicated agent who ensures your professional comfort and continuous access to development initiatives. Our goal is to provide you with stable and comfortable cooperation, contributing to your success as an IT expert and the success of our clients. We build long-lasting relationships based on Scandinavian values and 30 years of experience in creating IT solutions for over 200 organizations.

🏢 Summary: Senior Full-Stack Developer role focused on building healthcare analytics dashboards and AI-powered tools, combining React front-end development with Python backend services and LLM integrations. The position involves creating advanced data visualizations, CLI utilities, and cloud-based solutions to enhance healthcare data exploration. Fully remote opportunity within the EU. 🗂️ Requirements: 5+ years of full-stack development experience, Strong experience with TypeScript and React, Proven expertise in Recharts, Visx, and D3.js, Hands-on experience with Python backend development, Experience building REST APIs, Experience integrating LLM APIs (OpenAI, Claude, or Azure OpenAI), Experience with PostgreSQL or similar databases, Experience with Git and collaborative workflows, Fluent English, Legal right to work in the EU 📃 Skills: TypeScript, React, Vite, ReactRouter, Recharts, Visx, D3.js, Python, FastAPI, REST, OpenAI, Claude, Azure, PostgreSQL, Supabase, Git, pytest, Azure, CI/CD 🏢 Description: Ignite healthcare innovation - craft impactful dashboards and AI-powered tools for smarter patient insights 100% remote work As a Senior Full-Stack Developer , you will be working for our client, a leader in healthcare analytics and AI-driven solutions. You will help build sophisticated data visualization dashboards, develop cutting-edge CLI utilities, and integrate large language models to revolutionize healthcare data exploration and research workflows. This is a unique opportunity to shape the future of healthcare technology while advancing your career in a dynamic, innovative environment. Your main responsibilities: Build responsive front-end applications using TypeScript and React (Vite, React Router) for healthcare analytics dashboards. (60% React) Design and implement data visualizations with Recharts, Visx, and D3.js for patient journeys, operational metrics, and geographic insights. Develop Python CLIs and backend services with FastAPI, focusing on data pipeline management and AI integrations. (40% Python) Integrate with LLMs (OpenAI GPT-4, Claude, Azure OpenAI) for entity extraction, content generation, and real-time AI interactions. Create and maintain REST APIs to serve analytics data and connect with external APIs and databases (PostgreSQL/Supabase). Build developer tools with clear documentation, write tests with pytest, and participate in code reviews. Collaborate on deploying cloud-native solutions on Azure, leveraging CI/CD pipelines and real-time features. Ensure healthcare data privacy and security considerations in all user-facing and backend components. You're ideal for this role if you have: Over 5 years of experience in full-stack development, with a focus on React and Python. Strong expertise in TypeScript, React hooks, and modern front-end frameworks. Proven experience with data visualization libraries: Recharts, Visx, and D3.js. Hands-on backend experience with Python, including CLI development, async programming, and REST API design. Practical knowledge of integrating LLM APIs like OpenAI, Claude, or Azure OpenAI. Familiarity with database querying, data transformation, and API integration. Git proficiency, collaborative workflow experience, and good documentation practices. It is a strong plus if you have: Cloud experience with Azure or AWS, including deployment and CI/CD solutions. Front-end advanced skills such as complex interactive visualizations and design systems. Building agent-friendly interfaces and understanding autonomous AI workflows. Experience in healthcare domain, HIPAA compliance, or healthcare terminology. Language Required for the role: Fluent English (good command in both spoken and written) Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER 8668

🏢 Summary: Senior Full-Stack Engineer (Backend-Leaning) role focused on building and scaling secure B2B SaaS platforms within an Azure cloud environment. The position involves developing Java/Spring Boot backend services, Angular frontend applications, and integrating event-driven and search capabilities. You will work closely with architecture leadership to deliver scalable, high-quality features in a mature enterprise ecosystem. 🗂️ Requirements: 6+ years experience in building B2B SaaS or enterprise systems, Strong expertise in Java and Spring Boot, Experience building secure REST APIs, Solid experience with Angular, Hands-on experience with Azure cloud services, Experience with Docker and CI/CD pipelines, Experience with PostgreSQL and Elasticsearch, Experience with Apache Kafka, Ability to design scalable and resilient backend architectures 📃 Skills: Java, OpenJDK, SpringBoot, REST, Angular, Azure, Docker, CICD, PostgreSQL, Elasticsearch, Kafka, SonarQube, DockerCompose 🏢 Description: N-iX is a global software development service company that helps businesses across the globe create next-generation software products. Founded in 2002, we unite 2,400+ tech-savvy professionals across 40+ countries, working on impactful projects for industry leaders and Fortune 500 companies. Our expertise spans cloud, data, AI/ML, embedded software, IoT, and more, driving digital transformation across finance, manufacturing, telecom, healthcare, and other industries. Join N-iX and become part of a team where your ideas make a real impact. We are seeking a highly skilled and motivated Senior Full-Stack Engineer (Backend-Leaning) with 6+ years of professional experience to join our growing core engineering team. In this role, you will be instrumental in designing, scaling, and maintaining our enterprise-grade financial SaaS platform. While you will work across the full stack, your core strength and primary focus will be on building robust, high-performance backend systems using Java and modern enterprise frameworks. Requirements & Qualifications: Experience: 6+ years of proven professional experience building robust B2B SaaS platforms or large-scale enterprise systems. Experience in the financial technology (FinTech) sector or building financial-grade systems is a strong plus. Core Backend Stack (Must-Have): Strong expertise in Java, Spring Boot, Axon Framework, PostgreSQL, Elasticsearch, and Apache Kafka. Testing Requirement (Must-Have): Proficiency in Groovy. Backend test coverage via Groovy is a mandatory part of the development process. Frontend Stack (Must-Have): Solid experience with Angular and TypeScript for building modern web applications. Infrastructure & DevOps (Must-Have): Hands-on experience with Docker Compose and Gradle. Nice-to-Haves: Working experience with Keycloak, SonarQube, OpenAPI/Swagger, SendGrid, and Playwright is a plus. Key Responsibilities: Design, develop, and maintain secure, scalable, and resilient backend services using Java (OpenJDK), Spring Boot and Axon Framework. Architect and optimize relational databases (PostgreSQL) and structured search solutions using Elasticsearch. Develop responsive and clean user interfaces using Angular and TypeScript, ensuring seamless integration with backend REST APIs. Implement event-driven patterns and messaging queues using Apache Kafka to ensure high-throughput communication. Write and maintain comprehensive backend test coverage using Groovy. This is a strict, mandatory part of our development lifecycle. Manage identity and access management solutions by leveraging Keycloak for financial-grade security and authentication. Maintain high code quality through rigorous testing, code reviews, and analysis via SonarQube. Containerize applications using Docker and Docker Compose, and manage CI/CD deployment pipelines within the Azure Cloud ecosystem. Collaborate closely with cross-functional teams to define OpenAPI/Swagger specifications and integrate third-party services like SendGrid.

🏢 Summary: Senior Full Stack Developer role focused on designing and delivering new features for a regulatory compliance platform using a modern JavaScript stack. The position involves end-to-end development, architectural design on AWS cloud, and technical leadership within an Agile environment. You will shape the technical direction of the product while building scalable, production-ready solutions. 🗂️ Requirements: 5+ years professional software development experience, High proficiency in React, Experience with Next.js, Strong Node.js skills, Advanced GraphQL and SQL knowledge, Experience with AWS cloud infrastructure, Experience with Git and CICD pipelines, Degree in Computer Science or equivalent 📃 Skills: React, Next.js, Node.js, TypeScript, GraphQL, SQL, AWS, Terraform, Serverless, Git, CICD, DevOps, Jira 🏢 Description: About Us We are a Gliwice-based IT company supporting a British startup that helps global e-commerce brands (food, supplements, cosmetics) navigate complex regulatory compliance through an intelligent, structured platform. The Role As a Senior Full Stack Developer, you will join the product engineering team to drive the platform from concept to delivery. You will work in a modern, supportive environment, implementing new features and shaping the technical direction of the product alongside a team of highly skilled engineers. Key Responsibilities End-to-End Delivery: Design and implement new features using our modern stack (React, Next.js, Node.js, GraphQL). Architecture & Design: Apply architectural principles to build scalable solutions on AWS cloud infrastructure. Leadership: Lead code reviews, mentor junior/mid-level colleagues, and influence strategic technical decisions. Collaboration: Work closely with stakeholders and cross-functional teams in an Agile environment (DevOps/Jira). Requirements Experience: 5+ years of professional software development experience. Frontend: High proficiency in React; experience with Next.js is highly advantageous. Backend & Data: Strong skills in Node.js and advanced database programming (GraphQL/SQL). DevOps: Deep understanding of Git, CI/CD pipelines, and cloud platforms (preferably AWS). Education: Degree in Computer Science or equivalent reputable coding bootcamp. Mindset: Proactive leader with excellent communication skills and a "builder" mentality. Tech Stack: React, Next.js, Node.js, TypeScript, GraphQL, AWS (Serverless/Terraform).

🏢 Summary: Senior Backend Software Engineer role focused on designing and building high-performance, low-latency backend services for a regulated digital asset trading platform. The position involves architecting scalable, secure distributed systems in Java and integrating blockchain technologies. The engineer collaborates cross-functionally to deliver resilient, compliant solutions powering cryptocurrency markets. 🗂️ Requirements: Bachelor’s or Master’s degree in Computer Science or related field, or equivalent experience, 6–8+ years of professional software engineering experience, Strong proficiency in Java, Experience with distributed systems, Experience building high-throughput, low-latency systems, Experience with microservices architecture, Knowledge of security and compliance in regulated environments, Hands-on experience with databases, Experience with asynchronous messaging systems, Experience with CI/CD pipelines, Understanding of blockchain or crypto infrastructure, Availability to work overlapping PST hours 📃 Skills: Java, Microservices, DistributedSystems, Kafka, RabbitMQ, CI/CD, Blockchain, Cryptography, APIs, Databases, DevOps, Web3 🏢 Description: About us N-iX is a software development service company that helps businesses across the globe develop successful software products. Founded in 2002 in Lviv, N-iX has come a long way and increased its presence in eight countries Poland, Ukraine, Sweden, Bulgaria, Malta, the UK, the US, and Colombia. Today, we are a strong community of 2,000+ professionals and a reliable partner for global industry leaders and Fortune 500 companies. About our client Our customer is a leading, fully regulated US-based digital asset trading platform. They provide secure, low-latency access to cryptocurrency markets, acting as a bridge between traditional finance and the Web3 ecosystem. About The Role Our Senior Backend Software Engineer will be responsible for architecting, developing, and maintaining the high-performance backend services that power the core platform. Leveraging deep expertise in Java and distributed systems, you will collaborate with cross-functional teams to deliver secure, scalable solutions while exploring and integrating cutting-edge blockchain technologies. Key Responsibilities Design, build, and maintain high-throughput backend services and APIs in Java. Drive architecture discussions to enhance system scalability, resiliency, and performance. Prioritize security and compliance as core aspects of service design and delivery. Collaborate with product, security, DevOps, and compliance teams on cross-functional initiatives. Mentor engineers and lead by example with high engineering standards and best practices. Research and prototype blockchain integration opportunities (e.g., node syncing, client tooling). Advocate for maintainable, modern infrastructure informed by industry best practices. Required Qualifications Bachelor’s or Master’s degree in Computer Science or related field. At least 8 years of professional software engineering experience without a degree in Computer Science-related field , or at least 6 with an advanced degree in a different field. Strong communication skill and collaboration skills, motivation, problem solving mind set. Strong proficiency in Java and experience with modern frameworks and distributed systems. Experience with performance optimization (e.g., low-latency systems, microservices). Knowledge of security and compliance best practices in financial or regulated contexts. Interest or hands-on experience in blockchain, crypto infrastructure, or decentralized systems. Strong collaboration and mentorship skills in a fast-moving, cross-functional environment. Hands-on experience with BDs, async messaging (Kafka, RabbitMQ, etc.), CI/CD stack NB: This role requires working hours that overlap with the West Coast (PST) time zone. Candidates are expected to follow the schedules below (Monday–Friday), based on their location: LATAM: 11:00 – 20:00 Colombia: 09:00 – 18:00 Europe (EET): 12:00 – 21:00 Europe (CET): 11:00 – 20:00 Please note that alignment with these working hours is an essential requirement of the role. We offer*: Flexible working format - remote, office-based or flexible A competitive salary and good compensation package Personalized career growth Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) Active tech communities with regular knowledge sharing Education reimbursement Memorable anniversary presents Corporate events and team buildings Other location-specific benefits *not applicable for freelancers

🏢 Summary: Senior Software Engineer role focused on designing and building AI-powered backend systems that automate healthcare operations while supporting human workflows. The position involves hands-on system architecture, workflow orchestration, distributed systems, and AI process automation in a regulated environment. Remote-first work with required overlap with US Central Time. 🗂️ Requirements: 6+ years of experience building and maintaining production software systems, Strong experience designing and owning complex backend systems, Strong backend engineering skills, Experience with asynchronous, event-driven, or workflow-based distributed systems, Ability to work with 4–5 hour daily overlap with US team, Experience with AI or LLM-based systems and process automation, Strong spoken and written English communication skills, Ability to solve unclear problems with incomplete information, Self-motivated with strong ownership and responsibility 📃 Skills: TypeScript, Node.js, AI, LLM, Claude, Backend, APIs, HIPAA 🏢 Description: Please Note: Overlap with Central US Time required (until 20-21:00 CEST) We are a health technology company that helps older people and their families apply for important eldercare benefits, including Medicaid, Medicare, and VA programs. We work with healthcare, government systems, and people’s daily lives, so accuracy, reliability, and trust are very important. As the number of patients grows from hundreds to thousands, manual work is no longer enough. We are building AI-powered systems to automate routine tasks while keeping people involved for quality checks, difficult cases, and patient safety. Our goal is to make healthcare operations more scalable without losing the human connection. The Role We are looking for a Senior Software Engineer to lead the design and development of systems that combine AI automation with human workflows. This is an important role close to the core business. It is a fully hands-on position with no management duties or direct reports. You will not only build features, but also design systems, define best practices, and guide technical decisions as we grow. You should feel comfortable solving unclear problems, working closely with operations and product teams, and making smart decisions in a regulated environment. This role is a good fit for someone who enjoys system design, building reliable infrastructure, and taking ownership of their work. What You’ll Work On Designing workflow and orchestration systems for complex operations. Creating AI automations that handle routine tasks safely and send difficult cases to humans. Building systems where AI supports human work before, during, and after tasks. Managing long-running workflows that can last days or weeks. Connecting with external systems such as EVV platforms, insurers, government portals, and older messaging tools. Designing confidence scoring, auditing, and rollback systems for AI processes. Improving system reliability, monitoring, and error handling in production. Responsibilities Lead the technical design and development of scalable backend systems. Make and document architecture decisions with clear trade-offs. Create patterns for collaboration between AI systems and human workers. Work closely with operations teams to understand real-world issues and edge cases. Make sure systems are observable, auditable, and safe to run at scale. Identify technical risks early and suggest solutions. Maintain high standards for code quality, testing, and system design. Share knowledge and help improve the team’s technical standards through reviews and collaboration. What We’re Looking For Required 6+ years of experience building and maintaining production software systems. Strong experience designing and owning complex backend systems. Strong backend engineering skills (we use TypeScript and Node.js, but other languages are welcome). Experience with asynchronous, event-driven, or workflow-based distributed systems. Ability to work with a daily 4–5 hour overlap with the US team (until 20:00 or 21:00 Polish time). Comfortable working with unclear problems and incomplete information. Strong spoken and written English communication skills. Self-motivated with a strong sense of ownership and responsibility. Experience working with AI or LLM-based systems and process automation, such as using Anthropic’s API (Claude) or similar tools in business workflows. Nice to Have Experience in healthtech or other regulated industries. Knowledge of HIPAA and healthcare data privacy and security rules. Experience building systems with strict compliance or audit requirements. Experience with human review workflows. Experience integrating with unstable or legacy third-party APIs. Master’s or PhD in Computer Science, Engineering, or a related field. How We Work Remote-first company. Small, experienced teams with high trust and independence. Strong focus on system accuracy, reliability, and long-term maintenance. Practical and thoughtful use of AI, both for internal development and within our product. Direct connection to real users and operational impact.

🏢 Summary: Senior Software Engineer role focused on designing and building scalable backend systems that combine AI automation with human workflows in a regulated healthtech environment. The position involves hands-on system design, workflow orchestration, and development of reliable, auditable AI-powered processes integrated with external platforms. The engineer will lead technical decisions and ensure production-grade reliability, safety, and scalability. 🗂️ Requirements: 6+ years building and maintaining production software systems, Strong experience designing and owning complex backend systems, Strong backend engineering experience, Experience with asynchronous or event-driven distributed systems, Experience with workflow-based systems, Experience integrating AI or LLM-based systems into business workflows, Ability to design scalable, reliable, and auditable systems, Experience working with external or legacy APIs, Ability to overlap 4–5 hours with US time zone, Strong English communication skills 📃 Skills: TypeScript, Node.js, AI, LLM, Anthropic, Claude, APIs, DistributedSystems, EventDriven, Workflows, Backend, Architecture, Monitoring, Testing 🏢 Description: Please Note: Overlap with Central US Time required (until 20-21:00 CEST) We are a health technology company that helps older people and their families apply for important eldercare benefits, including Medicaid, Medicare, and VA programs. We work with healthcare, government systems, and people’s daily lives, so accuracy, reliability, and trust are very important. As the number of patients grows from hundreds to thousands, manual work is no longer enough. We are building AI-powered systems to automate routine tasks while keeping people involved for quality checks, difficult cases, and patient safety. Our goal is to make healthcare operations more scalable without losing the human connection. The Role We are looking for a Senior Software Engineer to lead the design and development of systems that combine AI automation with human workflows. This is an important role close to the core business. It is a fully hands-on position with no management duties or direct reports. You will not only build features, but also design systems, define best practices, and guide technical decisions as we grow. You should feel comfortable solving unclear problems, working closely with operations and product teams, and making smart decisions in a regulated environment. This role is a good fit for someone who enjoys system design, building reliable infrastructure, and taking ownership of their work. What You’ll Work On Designing workflow and orchestration systems for complex operations. Creating AI automations that handle routine tasks safely and send difficult cases to humans. Building systems where AI supports human work before, during, and after tasks. Managing long-running workflows that can last days or weeks. Connecting with external systems such as EVV platforms, insurers, government portals, and older messaging tools. Designing confidence scoring, auditing, and rollback systems for AI processes. Improving system reliability, monitoring, and error handling in production. Responsibilities Lead the technical design and development of scalable backend systems. Make and document architecture decisions with clear trade-offs. Create patterns for collaboration between AI systems and human workers. Work closely with operations teams to understand real-world issues and edge cases. Make sure systems are observable, auditable, and safe to run at scale. Identify technical risks early and suggest solutions. Maintain high standards for code quality, testing, and system design. Share knowledge and help improve the team’s technical standards through reviews and collaboration. What We’re Looking For Required 6+ years of experience building and maintaining production software systems. Strong experience designing and owning complex backend systems. Strong backend engineering skills (we use TypeScript and Node.js, but other languages are welcome). Experience with asynchronous, event-driven, or workflow-based distributed systems. Ability to work with a daily 4–5 hour overlap with the US team (until 20:00 or 21:00 Polish time). Comfortable working with unclear problems and incomplete information. Strong spoken and written English communication skills. Self-motivated with a strong sense of ownership and responsibility. Experience working with AI or LLM-based systems and process automation, such as using Anthropic’s API (Claude) or similar tools in business workflows. Nice to Have Experience in healthtech or other regulated industries. Knowledge of HIPAA and healthcare data privacy and security rules. Experience building systems with strict compliance or audit requirements. Experience with human review workflows. Experience integrating with unstable or legacy third-party APIs. Master’s or PhD in Computer Science, Engineering, or a related field. How We Work Remote-first company. Small, experienced teams with high trust and independence. Strong focus on system accuracy, reliability, and long-term maintenance. Practical and thoughtful use of AI, both for internal development and within our product. Direct connection to real users and operational impact.

🏢 Summary: Full-stack Engineer (backend-focused) role building a next-generation Software as a Medical Device (SaMD) ECG diagnostics portal, covering data ingestion, backend microservices, database design, and modern web front-end. The position involves integrating AI/ML algorithms, architecting scalable AWS serverless infrastructure, and ensuring HIPAA and SOC 2 compliance. Fully remote collaboration with cross-functional teams to deliver high-performance healthcare solutions. 🗂️ Requirements: Minimum 5 years full-stack development experience with backend focus, Bachelor’s degree in Computer Science or related field, Strong JavaScript expertise (TypeScript preferred), Strong experience with Node.js and Next.js/React, Experience with dynamic front-end rendering (progressive loading, continuous scrolling, zooming), Experience with modern AI workflows, Experience with AWS serverless, distributed computing, and big data, Experience managing infrastructure, databases, CI/CD, and DevOps, Experience integrating third-party solutions, Strong SQL skills and experience with Postgres or similar RDBMS, Ability to maintain HIPAA and SOC 2 compliance, Professional English communication skills 📃 Skills: JavaScript, TypeScript, Node.js, Next.js, React, AWS, SQL, Postgres, CI/CD, DevOps, REST, GitHub, AI, ML, HIPAA, SOC2 🏢 Description: WearLinq is a groundbreaking healthcare startup, emerging from Stanford University, on a mission to democratize healthcare. Our integrated ecosystem of hardware, software, and services aims to bridge gaps between patients and healthcare providers. We have successfully launched our first product: an FDA-cleared 6-channel EKG wearable device accompanied by a patient-facing mobile application, offering seamless access to qualified physicians to diagnose and manage arrhythmia and reduce stroke risk. With an exciting pipeline of upcoming solutions for various disease conditions, we are poised for rapid growth. Our leadership team is primarily located in the San Francisco Bay Area and Singapore but our software team is in Poland working fully remote. 🧪 Full-stack engineer with backend focus We are looking for an innovative, self-motivated full-stack developer primarily responsible for building our next-generation Software as a Medical Device (SaMD) ECG diagnostics portal. The role includes everything from data ingestion and database design to modern front-end web. This role reports to Director of Software but you’ll have a lot of exposure to the entire leadership team with room to grow. ✅ Requirements Minimum of 5 years experience in full-stack development, with a strong focus on backend technologies Bachelor's or higher degree in Computer Science, or a related field. Strong skillset in Javascript (TypeScript strongly preferred), Node.js, Next.js/React Strong experience with dynamic front-end rendering like progressive loading, continuous scrolling, and zooming Strong experience with modern AI workflows. Strong experience with AWS serverless, distributed computing, and big data. Experience in managing infrastructure, databases, CI/CD, and DevOps, with a focus on scalability and security. Experience integrating 3rd party solutions Strong SQL skills and experience with Postgres or similar RDBMS. Strong communication skills in English to liaise with technical and non-technical stakeholders. 🙌 Nice to Have Experience building/leading DevOps practices Experience working FDA software medical device regulatory environment IEC 62304 (medical device software lifecycle) experience ISO 14971 (risk management / hazard analysis) familiarity 21 CFR Part 11–compliant audit logging V&V protocol authoring (IQ/OQ/PQ, test plans) Familiarity with healthcare, bonus if ECG arrhythmias 🚀 What You’ll Do Design and build various high-performance backend microservices Integrate data from our AI/Ml classification algorithm Collaborate with Product, Design, and Developers to create an amazing user experience Architect and implement data models, API functionality, and RESTful interfaces Help automate data-flows between different entities and organizations while maintaining HIPAA and SOC 2 compliance Manage code in GitHub and maintain the CI/CD pipeline Collaborate with other developers: AI/ML, iOS, Android, QA, and management to develop high-quality products Engage with cross-functional teams including hardware and medical professionals to ensure a seamless user experience. Benefits B2B contract Paid vacation Competitive salary and equity options. Opportunity to work at the forefront of healthcare innovation. Fully remote and flexible work environment. Collaboration with a talented team and advisors. If you are passionate about revolutionizing healthcare and are looking for a challenging role that allows you to make a significant impact, we'd love to hear from you. WearLinq is an equal opportunity employer and we encourage candidates from all backgrounds to apply.

🏢 Summary: Full-stack engineer role with backend focus to build and scale a Software as a Medical Device (SaMD) ECG diagnostics portal, covering backend microservices, data ingestion, database design, and modern web front-end. The position involves integrating AI/ML algorithms, architecting scalable cloud infrastructure, and ensuring compliance in a regulated healthcare environment. It offers end-to-end ownership from API design to CI/CD in a fully remote setup. 🗂️ Requirements: 5+ years full-stack development experience with strong backend focus, Bachelor’s degree in Computer Science or related field, Strong JavaScript skills with TypeScript, Commercial experience with Node.js, Commercial experience with Next.js or React, Experience with dynamic front-end rendering, Experience with modern AI workflows, Experience with AWS serverless and distributed systems, Experience managing infrastructure, databases, and CI/CD, Experience integrating third-party solutions, Strong SQL knowledge, Experience with Postgres or other RDBMS, Experience with scalable and secure systems 📃 Skills: JavaScript, TypeScript, Node.js, Next.js, React, AWS, Serverless, SQL, Postgres, RDBMS, CI/CD, DevOps, Microservices, REST, AI, ML, GitHub 🏢 Description: WearLinq is a groundbreaking healthcare startup, emerging from Stanford University, on a mission to democratize healthcare. Our integrated ecosystem of hardware, software, and services aims to bridge gaps between patients and healthcare providers. We have successfully launched our first product: an FDA-cleared 6-channel EKG wearable device accompanied by a patient-facing mobile application, offering seamless access to qualified physicians to diagnose and manage arrhythmia and reduce stroke risk. With an exciting pipeline of upcoming solutions for various disease conditions, we are poised for rapid growth. Our leadership team is primarily located in the San Francisco Bay Area and Singapore but our software team is in Poland working fully remote. 🧪 Full-stack engineer with backend focus We are looking for an innovative, self-motivated full-stack developer primarily responsible for building our next-generation Software as a Medical Device (SaMD) ECG diagnostics portal. The role includes everything from data ingestion and database design to modern front-end web. This role reports to Director of Software but you’ll have a lot of exposure to the entire leadership team with room to grow. ✅ Requirements Minimum of 5 years experience in full-stack development, with a strong focus on backend technologies Bachelor's or higher degree in Computer Science, or a related field. Strong skillset in Javascript (TypeScript strongly preferred), Node.js, Next.js/React Strong experience with dynamic front-end rendering like progressive loading, continuous scrolling, and zooming Strong experience with modern AI workflows. Strong experience with AWS serverless, distributed computing, and big data. Experience in managing infrastructure, databases, CI/CD, and DevOps, with a focus on scalability and security. Experience integrating 3rd party solutions Strong SQL skills and experience with Postgres or similar RDBMS. Strong communication skills in English to liaise with technical and non-technical stakeholders. 🙌 Nice to Have Experience building/leading DevOps practices Experience working FDA software medical device regulatory environment IEC 62304 (medical device software lifecycle) experience ISO 14971 (risk management / hazard analysis) familiarity 21 CFR Part 11–compliant audit logging V&V protocol authoring (IQ/OQ/PQ, test plans) Familiarity with healthcare, bonus if ECG arrhythmias 🚀 What You’ll Do Design and build various high-performance backend microservices Integrate data from our AI/Ml classification algorithm Collaborate with Product, Design, and Developers to create an amazing user experience Architect and implement data models, API functionality, and RESTful interfaces Help automate data-flows between different entities and organizations while maintaining HIPAA and SOC 2 compliance Manage code in GitHub and maintain the CI/CD pipeline Collaborate with other developers: AI/ML, iOS, Android, QA, and management to develop high-quality products Engage with cross-functional teams including hardware and medical professionals to ensure a seamless user experience. Benefits B2B contract Paid vacation Competitive salary and equity options. Opportunity to work at the forefront of healthcare innovation. Fully remote and flexible work environment. Collaboration with a talented team and advisors. If you are passionate about revolutionizing healthcare and are looking for a challenging role that allows you to make a significant impact, we'd love to hear from you. WearLinq is an equal opportunity employer and we encourage candidates from all backgrounds to apply.

🏢 Summary: Full-stack Engineer role building and shipping end-to-end features for a health-tech AI product, covering internal clinician tooling and a client-facing app. The position involves integrating diagnostics, wearable and lab data, and leveraging AI coding agents as a core part of the development workflow. Engineers are expected to own architecture decisions, security, and delivery across the full stack in a fast-moving remote environment. 🗂️ Requirements: 4+ years professional software engineering experience, At least two shipped products used by real users, Strong Computer Science fundamentals (data structures, systems, software design), Experience with both backend and frontend development, Daily use of AI coding agents in development workflow, Experience with strict typing, linting, and automated testing, Ability to design and implement secure architectures, Availability during Central European morning hours, Fluent English for technical communication 📃 Skills: Fullstack, Backend, Frontend, APIs, Security, AI, Testing, Linting, Typing, Databases, Wearables, Integration 🏢 Description: 💰 Salary: $5,000-$7,000/month (depending on seniority) 🌎 100% remote 🕦 Full-time position, long-term ☑️ B2B contract We are looking for a Full-stack Engineer to join our client, a Singapore-headquartered health-technology and AI startup focused on longevity and preventative care. The product combines diagnostics, wearable signals, lab data, and AI to coordinate personalised health programmes for individual clients. You will own features end-to-end across two surfaces: internal tooling used by in-house clinicians to assemble recommendations, and the client-facing app that turns those recommendations into daily actions. AI coding agents are part of the daily workflow, and every engineer is expected to push what these tools can do, not treat them as autocomplete. The tech stack is intentionally not fixed; the bar is engineering judgement and shipping speed. Requirements 4+ years of professional software engineering experience, with at least two products shipped to real users Computer Science background, or an equivalent track record that shows the same depth in data structures, systems, and applied software design Strong fundamentals across both server and client work, regardless of which language or framework you used most recently Daily use of AI coding agents in your workflow, with an honest read on where they currently help and where they fail Comfort with strict typing, linting, automated tests, and the rest of a modern production setup Reliable availability during Central European morning hours, so meetings line up with Singapore afternoons Fluent English for technical discussions and written documentation Responsibilities Build and ship features across the full stack, from schema design through to the final UI details Develop the internal dashboards used by medical practitioners to interpret client data and assemble recommendations Develop the client-facing application that delivers daily health guidance to end users Design and tune the security posture separately for internal practitioner tooling and external consumer surfaces Integrate inputs from wearables, lab providers, and the physical clinic environment into one coherent product Push the AI tooling stack hard, both as part of the development process and inside product features Operate as a product-minded engineer: spot problems early, propose solutions, and drive them through to release Get to know DevsData We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team. We employ people with experience in international corporations as well as the ones from the best technical and business universities. Find out more: https://devsdata.com