Role Description iQuasar LLC has an exciting opportunity for a AWS Full Stack Developer to join our growing team. The Full Stack Developer will work on the federal public facing portal project. The federal public facing portal is a high-visibility program aimed at enhancing access to government services for small businesses. As a Lead Full Stack Developer, you will play a critical role in leading the development of the initial MVP pilot of the SSO Portal by integrating various external systems and data sources. You will work closely with cross-functional teams to design, develop, and deliver innovative solutions using an Agile DevSecOps environment and Customer Experience methodologies. We are seeking a AWS Full Stack Developer for a contract position. Position Type: Full-time-Remote Role Specific Duties/ Role Responsibilities - Hands on expertise with designing, developing, and delivering highly scalable, highly available, modular, flexible, and secure serverless solutions hosted on AWS cloud. - AWS certification (Solutions Architect and/or Developer) is preferred. - Lead the development team by collaborating with product managers, Architects, SMEs, and UI/UX designers to design, develop, and implement end-to-end Portal platform with SSO on AWS platform. - Design, develop and maintain responsive web applications with a strong focus on user experience and performance. - Establish industry best practice for DevSecOps process to fit client environment. - Build and integrate APIs to connect front-end applications with back-end services, systems, and databases. - Participate in the full software development lifecycle, from requirements analysis and design to testing, deployment, and maintenance. - Establish a test-driven development model with the QA/Test team to ensure software quality through continuous testing and debugging. Qualifications - Bachelor's degree in Computer Science, Information Systems, Software Engineering, or a related field. - Minimum of 5 years of full-stack software development experience. - Strong experience developing enterprise web applications using modern JavaScript frameworks and cloud technologies. - Experience building cloud-native and microservices-based applications. - Experience working in Agile/Scrum software development environments. - Prior experience in projects related to government services, customer experience, or financial services is a plus. - Candidates must be a US Citizen or a Legal Permanent Resident (Green Card status) for 3 years and be Federal Tax compliant. Benefits - 401(k) - Dental insurance - Health insurance - Paid time off - Vision insurance Company Description iQuasar LLC is a proud partner of the Military Spouse Employment Partnership (MSEP) and the Virginia Values Veterans (V3) Program, reflecting our strong commitment to supporting military spouses, veterans, and inclusive hiring practices. We are an Equal Opportunity Employer and do not discriminate based on race, religion, color, national origin, political affiliation, sex, sexual orientation, gender identity, age, marital/parental/veteran status, disability, genetic information, membership in an employee organization, retaliation, military service, non-merit factors, or any other characteristics protected by applicable law. This is a remote position.

• Build and maintain the React-based trading user interface. • Implement dynamic, interactive interfaces for real-time data, including live order book updates, price feeds, and trade executions via WebSockets. • Own component architecture, state management, and responsive design. • Optimize rendering, minimize load times, and ensure smooth, low-latency interactions under heavy data loads. • Collaborate closely with product and design teams to translate complex requirements into intuitive user interfaces. • Design and maintain TypeScript services, including REST APIs, WebSocket servers, and background services. • Design and deliver event-driven pipelines that ingest and process pricing and account data. • Own REST and WebSocket API contracts (OpenAPI / AsyncAPI specs), ensure smooth data flow between frontend and backend, and maintain API documentation. • Interact with on-chain data, index blockchain events, and bridge smart contracts with off-chain services. • Develop and maintain comprehensive unit, integration, and end-to-end tests across frontend and backend systems. • Uphold continuous integration (CI) quality gates and rigorous code review standards. • Work closely with cross-functional teams, including product, design, and quantitative specialists.

Role Description Компанія шукає Fullstack Engineer із фокусом 80% на backend і 20% на frontend та практичним досвідом у fintech, payments або crypto. Основним завданням спеціаліста буде розробка транзакційних систем, платіжних потоків, blockchain-інтеграцій та high-load сервісів, у яких критично важливі коректність, стабільність і безпека роботи з коштами. Інженер працюватиме над кількома продуктами: чинними системами, які потрібно посилювати та масштабувати, і новою платформою, що перебуває на етапі активного проєктування. Frontend на React і Next.js переважно належить іншим членам команди, але спеціаліст повинен уміти читати та за потреби змінювати frontend-код. - Проєктувати та розробляти backend-сервіси на Node.js, TypeScript і NestJS. - Відповідати за payment flows, balances, settlement, ledger logic, idempotency та reconciliation. - Розробляти й підтримувати blockchain-інтеграції. - Працювати з blockchain nodes, wallets, on-chain monitoring і multi-chain системами. - Інтегрувати зовнішні фінансові, платіжні, біржові та KYC/AML API. - Брати участь в архітектурі нової платформи. - Підвищувати reliability, observability і performance чинних сервісів. - Розвивати інженерні стандарти та брати участь у технічних рішеннях. - За потреби працювати з React / Next.js frontend. Qualifications - Комерційний production-досвід у fintech, payments або crypto. - Практичний досвід розробки систем, які обробляють реальні грошові операції. - Сильні знання Node.js і TypeScript. - Досвід роботи з NestJS або аналогічними backend-фреймворками. - Розуміння software design patterns, clean architecture та domain modeling. - Досвід із microservices або distributed systems. - Розуміння service boundaries, messaging та failure handling. - Розуміння transactional guarantees: idempotency, consistency та exactly-once processing. - Розуміння принципів double-entry accounting. - Сильні знання PostgreSQL: transactions, isolation levels, indexing і query optimization. - Досвід із high-load та real-time системами. - Досвід із queues, background jobs, asynchronous processing і concurrency. - Досвід інтеграції сторонніх фінансових або blockchain API. - Здатність розвивати й покращувати наявні codebases, а не лише створювати greenfield-рішення. - Здатність проєктувати системи та самостійно ухвалювати прагматичні технічні рішення. - Увага до failed transactions, retries, network failures, edge cases, tests, invariants та audit trails. Requirements - Поглиблений досвід із blockchain nodes. - Wallet infrastructure: key management, address generation, sweeps, hot/cold wallet separation. - On-chain transaction monitoring. - Робота з confirmations і blockchain reorgs. - Досвід із trading bots та exchange APIs. - PHP / Laravel. - Event-driven architecture. - Kafka, RabbitMQ або інші message brokers. - CI/CD і Kubernetes. - AML screening і transaction-monitoring systems. - Практичний досвід роботи з React або Next.js. Benefits - Full-time зайнятість. - Переважно віддалений режим роботи. - Роботу над власним fintech/crypto-продуктом. - Участь у проєктуванні нової платформи з нуля. - Роботу з чинними системами, які обробляють реальні транзакції. - Робоче середовище, побудоване на взаємоповазі, відкритому обговоренні процесів і взаємодопомозі.

Role Description Senior Lead - L2 - Full Stack Developer (Python + React) | (Remote) Experience: 6 - 9 Years - Design and develop robust full-stack applications by building responsive user interfaces in React. - Develop scalable backend services using Python, PySpark, and REST APIs. - Manage data integration within Databricks. - Orchestrate continuous deployment using Bitbucket across AWS or Azure cloud environments. - Design, develop, test, and maintain full-stack applications. - Collaborate with cross-functional teams to deliver scalable and high-quality software solutions. - Ensure application performance, scalability, and reliability across the technology stack. - Troubleshoot, debug, and optimize applications to ensure seamless user experience. - Follow coding standards, development best practices, and participate in code reviews. - Support deployment and maintenance activities across cloud environments. Qualifications - Must Have Skills: BitBucket, Rest API, Databricks, React, AWS, Python Company Description For a very long time, tech consulting has always been about two questions: Where to go? How to get there? We believe it could be much more than that. When technology influences the thought, behaviour, and actions of billions, it's no longer just about helping businesses adapt to the trends and shifts. It's about helping them start a conversation that drives change. And that's exactly the deeper impact we are committed to delivering for our clients. Be it the adoption of a new technology or the expansion into new areas of value generation and business, we want our clients to be in harmony with the digital force. We strongly believe that technology should work for you, not the other way around.