Freelance Software Developer (C/C++ - Rust) - AI Trainer

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

We’re looking for an IT Operations Manager to own and scale our IT function. This is a hands-on role today: you’ll manage devices, support employees, maintain on-prem equipment, and build out the internal cloud infrastructure that powers our business. As the company grows, you’ll take on a more strategic role — setting the IT roadmap, managing vendors, and building an IT team. You’ll collaborate closely with our Cloud/SecOps team: aligning on security, integrations, and shared infrastructure, while owning the operations, employee-facing cloud systems, and support side of IT. Responsibilities Lead IT operations: endpoint management, device lifecycle, and vendor management. Be hands-on with support: onboarding, troubleshooting, tickets, and escalations. Manage on-prem hardware, office networking, and SaaS tooling. Design and implement internal cloud infrastructure for IT operations (e.g., SSO/IdP, MDM, IAM, automation, SaaS integrations). Support implementation of IT processes such as MFA, SSO, endpoint management, logging, and patch management. Improve reliability and efficiency of internal systems, with a focus on employee productivity. Collaborate with the Cloud/SecOps team on infrastructure integrations, identity management, and compliance readiness. Evaluate, select, and manage IT vendors (hardware, SaaS, MDM, networking). Document IT workflows and continuously improve processes for scale. Support compliance readiness and security audits by aligning IT operations with organizational policies and compliance frameworks. Anticipate future needs: prepare for IT team growth, design scalable processes, and eventually mentor/manage IT staff. Requirements 6+ years in IT or infrastructure roles, with at least 2 years of ownership or leadership experience. Strong hands-on experience with device management, networking, and internal cloud systems (AWS/GCP/Azure for IAM, automation, SaaS integrations). Proven success implementing IT processes and internal tooling in a growing organization. Excellent communication skills — able to set direction, influence stakeholders, and work cross-functionally. Comfortable being hands-on today while preparing to take on a more strategic leadership role as we scale. Familiarity with regulated, compliance-driven environments (e.g., CMMC, SOC 2, ISO 27001, NIST) and experience supporting compliance initiatives is a plus. Benefits Health Care Plan (Medical, Dental & Vision). 401k with 5% matching. Paid Time Off (Uncapped Vacation, plus Sick & Public Holidays). Flexible hybrid work arrangement. Relocation assistance for qualifying employees.

This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. What we do The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe. About the Role We are looking for an experienced Python developer who enjoys building tools, environments, and infrastructure for working with LLM-based agents. You’ll help create sandboxes, task systems, and CI/CD pipelines to support testing and development of AI agents. You’ll also work closely with researchers and domain experts, helping them set up and use these tools effectively. Although every project is unique, you might typically: Sandboxes for running and testing AI agents safely Tools for writing tasks and test cases for agents CI/CD pipelines to run checks and evaluate agents Dev environments for experts creating these tasks Repo templates and scripts to help new contributors Interfaces for tracking task input and agent results Example Tasks How to get started Simply apply to this post, qualify, and get the chance to contribute to projects aligned with your skills, on your own schedule. From creating training prompts to refining model responses, you’ll help shape the future of AI while ensuring technology benefits everyone. Requirements You have a Bachelor's or Master’s degree in Software Development, Computer Science, or other related fields.  You have 5+ years of experience writing Python code. Your level of English is advanced (C1) or above. You are ready to learn new methods, able to switch between tasks and topics quickly and sometimes work with challenging, complex guidelines. Our freelance role is fully remote so, you just need a laptop, internet connection, time available and enthusiasm to take on a challenge. Benefits Why this freelance opportunity might be a great fit for you? Get paid for your expertise, with rates that can go up to $50/hour depending on your skills, experience, and project needs. Take part in a part-time, remote, freelance project that fits around your primary professional or academic commitments. Work on advanced AI projects and gain valuable experience that enhances your portfolio. Influence how future AI models understand and communicate in your field of expertise.

Business Analyst w/ a focus on: cyber detective job focused on SMS security Overview: The primary day to day role of this backfill will be reviewing commercial SMS traffic using various databases and web portals as well as running Splunk queries in order to identify phishing, Social Engineering, or other illegal/disallowed content. Key Responsibilities: Review commercial SMS traffic using internal databases and web portals. Execute and analyze Splunk queries to detect suspicious or prohibited content. Identify phishing, social engineering, and other malicious messaging patterns. Adhere to internal guides and industry standards Maintain detailed documentation and tracking reports for investigations. Handle confidential content with discretion and professionalism. Required Skills & Qualifications: Strong aptitude for reviewing large datasets with high attention to detail. Solid understanding of phishing and social engineering tactics. Experience with database querying tools (preferably Splunk). Thorough and cautious approach to investigations, with an understanding of the potential impact of errors in a production environment. Proven ability to maintain accurate and comprehensive documentation. Familiarity with Shortcode, 10DLC, and Toll-Free number systems. Preferred Qualifications: Prior experience working on confidential or sensitive projects. Exposure to dark projects or environments involving secure content review.