Freelance Software Developer (TypeScript) - Quality Assurance (AI Trainer)

We are looking for a health technology developer, ideally with experience with modern healthcare standards. Your job will be to work with and be part of a global effort to model and build technology solutions for healthcare. Some of your work will be open source. Our commitment to continuous investment in learning and contribution to the evolution of health technology fuels our enthusiasm for the future and potential to revolutionize the sustainability and practice of medicine. Responsibilities Design and implement product features in Java and Spring apps Engage with and learn from HL7/FHIR health informatics community around standards-based approaches to modeling and solving healthcare use-cases Consult with our clients and provide strategic advice on how to use technology to solve their problems Be accountable for ensuring that all working hours are accurately reported Requirements Desire to work on health technology Have 3+ years experience developing software professionally Experience in Java and Spring Worked on production applications (bonus) Experience building health technology systems with FHIR and CQL Proficiency with HAPI and the Java FHIR client libraries Proficiency in other programming languages, such as TypeScript and Kotlin Worked on design, development, and devops of production Java applications in healthcare Benefits We operate in small, cross-functional, long-lived teams. This is a remote or in-person position - we are based in the Boston area, but remote work from anywhere in the US is acceptable. Some amount of travel is possible. We provide a competitive salary, a self-directed 401K plan, 100% coverage of health insurance premiums, an annual budget for professional development and conferences, along with many other perks.

Job Title Principal Software Engineer - Python AI Pipelines Overview We are looking for an experienced software engineer to help us build a new generation of transpilation tools enabled by AI and modern verification techniques that promises to bridge the gap between algorithm development and deployment to embedded systems. In this role you will play a lead role in architecting and implementing novel code generation pipelines that use a mix of Generative AI, Static Analysis and Formal Verification methods to translate code written in one language to another. Requirements Responsibilities ● Define Software Architecture for Agentic AI pipelines. Architect and implement complex workflows involving state machines, message queues, and distributed processing. ● Deploy and manage containerized services using Docker. ● Build well tested extensible code foundations for code translation products. ● Collaborate with domain specialists to incorporate formal verification and static analysis methods into code generation pipeline. ● Work with cloud services and distributed architectures to ensure high availability. Must Have ● Seven or more years of experience with collaborative enterprise-level software development in Python to deliver products to a large customer base ● Demonstrated experience gathering requirements from stakeholders and distilling them into software designs ● Demonstrated experience planning and executing on large projects in a team-based setting ● Demonstrated history of building and delivering robust software by employing best practices throughout the SDLC process, including Code review, Testing, Continuous integration, Release management and Build systems ● Experience with Machine Learning Tools and Frameworks ● Expertise in building scalable APIs (REST, GraphQL, gRPC). ● Hands-on experience with Docker and containerized application development. Great to Have ● Strong experience with workflow orchestration, state machines, and message queues (e.g., RabbitMQ, Kafka, Redis, Celery). ● Familiarity with PromptFlow or similar workflow automation tools. ● Experience working with cloud-based distributed systems (AWS, GCP, Azure).

Flexcompute is leading the transformation of engineering simulation with our revolutionary ultra-fast simulation technology. Our flagship products, including the industry-leading Computational Fluid Dynamics (CFD) software Flow360 and electromagnetic simulation software Tidy3D, are reshaping how simulations are conducted across diverse sectors. Founded by visionaries from Stanford and MIT and supported by top-tier venture capital firms, we are a rapidly growing team dedicated to breaking boundaries and challenging the norms of the multi-billion-dollar engineering simulation market. Role Overview We are looking for a Backend Software Engineer to help us design and implement scalable solutions that meet the growing demands of our advanced EM simulation platform. The ideal candidate has expertise in high-performance computing (HPC), infrastructure, web API design, and systems design. Additionally, the candidate will be help us enhance our data management, frontend-backend API unification, and cloud integration. Key Responsibilities Contribute to general software development efforts, such as API unification, simulation data management (e.g., caching, syncing, storage), and scripting improvements. Collaborate with EM and infrastructure teams to implement simulation-specific solutions, including enhancements to back-end/scheduler integrations and Python front-end functionality. Improve our task pipelines through an innovative design for a web API in a multi-physical simulation context. Develop and maintain hybrid cloud compute and storage solutions, integrating on-premise HPC systems with modern cloud platforms. Optimize and manage high-performance computing clusters equipped with high-speed interconnects. Requirements Education: Bachelor’s degree or higher in computer science or computer engineering. Technical Skills: Proficiency in Python, C++, and Java, with experience in distributed computing environments (e.g., MPI). Familiarity with backend API development, documentation, packaging, and deployment. Understanding of HPC computing, system administration, and networking. Experience compiling and optimizing C++ source code. Expertise in cloud computing and storage solutions. Proficiency in Linux operating systems, software deployment (e.g., Ansible), and backend security. Experience with containerization and orchestration tools (e.g., Docker, Kubernetes, Swarm). Innovative Mindset: Ability to learn quickly, adapt to new challenges, and innovate in a fast-paced startup environment. Bonus Skills: Familiarity with electromagnetic physics simulations Knowledge of memory, CPU, and GPU resource optimization. Familiarity with simulation-specific tooling and workflows. Understanding of simulation GUI and scripting interfaces. Example Projects Work with the wider team to merge code into a single repo and then build CI/CD that enforces best-practices, like protecting the main branch Implement docker container usage across the developer workflow, from development to deployment including automated, parameterized image building for on-premise customers Build and deploy a desktop configuration with GUI that connects to a network simulation service and includes licensing controls Track, monitor, and improve the end-to-end latency of simulation runs across all user traffic Manage the sizing and configuration of the high-performance computing cluster comprised of CPUs and GPUs, and track metrics like utilization and performance Collaborate closely with EM team members on the design and optimization of multi-physics simulation workflows, including using frameworks like Slurm and Dask and redesigning our web API Join Us By joining Flexcompute, you’ll be at the heart of a movement set to redefine the engineering simulation industry. You will play a key role in shaping the future, where our innovations in simulation technology pave the way for groundbreaking advancements. We are committed to fostering an innovative and collaborative culture where boundaries of possibility are re-imagined, driven by creativity, expertise, and a shared vision of transforming the technological landscape. Benefits Competitive compensation with equity of a fast-growing startup. Medical, dental, and vision health insurance. 401(k) Contribution. Gym allowance. Friendly, thoughtful, and intelligent coworkers.

Give decision-makers the clarity they need—exactly when they need it. At Code Metal, real-time physics sims, AI insights, and operator actions converge into massive data streams. As our Visualization & Frontend lead, you’ll turn that firehose into elegant, high-impact experiences that guide multi-billion-dollar force-design choices driven through wargaming. We’re looking for a hands-on architect who can shape a modular UI stack, tame dense geospatial and temporal data, and mentor a small, elite crew to ship polished products fast. What you’ll do Architect a next-gen UI framework—design a component library and plugin system that lets internal teams (and future third-parties) extend visualizations without touching core code. Render data at scale—build responsive views that fuse live sim outputs, AI overlays, and historical datasets into one coherent, zoom-through timeline. Integrate cleanly—consume FastAPI/ZeroMQ endpoints from the backend and publish well-versioned client APIs for mission-planning tools and dashboards. Iterate with stakeholders and UX design Leads—relentlsly optimize experience driven by performance and feedback from Airforce wargamers and UX leads. Lead by example—drive UI/UX best practices, code reviews, design critique, and automated testing; help teammates grow into force multipliers. Ship continuously—own the CI/CD pipeline for web and desktop targets, with an eye toward DoD accreditation and cross-domain distribution. Why Code Metal? Mission with impact: your visuals steer the conversations that shape tomorrow’s force. Velocity: tight loops, tiny teams—design in the morning, deploy by evening. Ownership: no spectators—every engineer ships code that matters. Requirements Must-have credentials 6+ years building and deploying data-rich, production-grade web applications. Mastery of modern TypeScript/JavaScript frameworks and state-management patterns. Proven record designing modular, extensible frontends that multiple teams can evolve in parallel. Deep experience visualizing large datasets (time-series, geospatial, graph) in real time. Strong grasp of secure, maintainable build and packaging workflows. Active Secret clearance (or the ability to obtain quickly). Bonus points WebGL / WebGPU, deck.gl, Cesium, or other high-performance rendering libraries. Cross-platform desktop packaging (Electron, Tauri, Progressive Web Apps). Familiarity with human-factors design for mission-critical environments. TS/SCI clearance. Benefits Health care plan with 100% premium coverage, including medical, dental, and vision. 401k with 5% matching. Paid Time Off (Uncapped Vacation, plus Sick & Public Holidays). Flexible hybrid work arrangement. Relocation assistance for qualifying employees.

Engineer Solutions that Empower Students  Are you passionate about technology, troubleshooting, and making an impact in education? MasteryPrep is seeking a Technical Support Engineer to provide high-quality support to both internal teams and external users, ensuring seamless operations across our technology platforms. Join a team dedicated to using technology to empower educators and students nationwide. In this role, you will serve as a key technical resource for our customers, troubleshooting and resolving complex issues across full-stack web applications. You’ll use modern developer tools, databases, and reporting systems to diagnose problems, ensure smooth integrations, and deliver timely solutions. This hands-on position involves collaborating closely with development, QA, and product teams to reproduce and resolve defects, maintaining application stability, and driving continuous improvement. Success in this role requires both strong technical expertise and clear, empathetic communication, ensuring that every customer interaction leads to a reliable and positive experience. Key Responsibilities: Serve as the primary point of escalation for customers issues, addressing their technical inquiries and issues related to full-stack technologies. Provide timely troubleshooting and resolution of customer-reported bugs in web applications built with TypeScript and React. Diagnose and resolve database-related issues in PostgresSQL and Firestore, ensuring data integrity and performance optimization. Document, track, and escalate customer-reported bugs using Gitlab. Collaborate with development teams to reproduce, diagnose, and resolve software defects Lead maintenance engineering. Work closely with cross-functional teams, including development, QA, and product management, to resolve complex technical issues. Communicate effectively with customers, providing updates on the status of their requests and issues in a clear and timely manner. Gather feedback from customers to improve the support process and contribute to product enhancements. About MasteryPrep Nearly 90% of low-income students graduate high school without a college-ready ACT or SAT score. MasteryPrep’s mission is to level the playing field in education by offering the most effective test preparation available – made accessible to all students.  Through more than 10 successful years of partnering with school districts and institutions on college readiness services and resources, MasteryPrep has surpassed one million students served since the company’s founding in 2012.  MasteryPrep increased its student outreach by 70 percent in 2021 and is ranked among the Inc. 5000 “Fastest Growing Companies,” featured by “Entrepreneur 360,” and selected among the “Growth Leaders” by Louisiana Economic Development. Requirements Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent experience) 2+ years experience as a full-stack engineer Strong knowledge of Google Firestore, PostgreSQL, TypeScript, JaveScript, and React Experience with SSO,  specifically with Security Assertion Markup Language (SAML) protocols Proficient in integrating Learning Tools Interoperability (LTI) standards  Skilled in integrating with Student Information Systems (SIS)  Familiarity with rostering and integration services in education technology (e.g., Clever, ClassLink, Schoology) Excellent problem-solving and troubleshooting skills Ability to work independently and as part of a team in a fast-paced environment Strong communication and collaboration skills Familiarity with compliance standards such as FERPA, COPPA or PCI DSS preferred Knowledge of secure coding practices and application security testing techniques preferred Benefits $75,000-$85,000 starting salary based on qualifications  Opportunity to work with cutting-edge technologies in a collaborative environment Flexible work hours and remote work environment Professional development opportunities and reimbursement for certifications and training  Company-sponsored social events and team-building activities Employee benefits eligibility (health, disability, AD&D, life insurance) Matching 401k Paid time off Generous paid holidays

A Principal Software Engineer for React Native is an associate at Creative Chaos who is mainly responsible for developing front-end mobile client applications for various software platforms. A Principal Software Engineer makes sure that the functionality, security, and performance of the server application are as per the design and are completely bug-free. Principal engineers have a responsibility to lead a team of engineers and mentor team members through continuous training and guidance. Job Description: Analyze business requirements Estimate assigned tasks Write code and unit tests Collaborate with other team members Tune your code for enhanced security and performance Maintain systems by fixing any existing issues Update issue tracking software Provide status updates Communicate with client Control versions of your code Research new technologies Lead a team of software engineers Mentor team members through training and guidance Upgrade skills and knowledge Evaluate candidates for open positions Requirements Minimum Bachelors in Computer Science/Software Engineering or equivalent. Minimum 6-10 years of related experience in a professional industry Highly proficient in rendering components with Native APIs. Transitioned from native IOS / Android (Objective C) to React Native. Good Hands-on with Typescript and GraphQL database. Understanding of REST APIs, the document request model, and offline storage Experience working with Swift, Kotlin, Objective C, or Java is a plus. Proficient in CSS, HTML, and writing cross-platform compatible code. Excellent programming and analytical skills with knowledge of design patterns Knowledge of and experience with Github, JIRA, and other collaboration tools Excellent verbal and written English communication skills Flexible attitude and versatile personality Strong presentation skills Strong influence among team members Benefits Paid Time Off Work From Home Health Insurance OPD Training and Development Life Insurance Exchange Program