Freelance Software Developer (Python Engineer) - AI Trainer

Trexquant is a growing systematic fund at the forefront of quantitative finance, with a core team of highly accomplished researchers and engineers. To keep pace with our expanding global trading operations, we are seeking a C++ Market Data Engineer to design and build ultra-low-latency feed handlers for premier vendor feeds and major exchange multicast feeds. This is a high-impact role that sits at the heart of Trexquant's trading platform; the quality, speed, and reliability of your code directly influence every strategy we run. Responsibilities Design & implement high-performance feed handlers in modern C++ for equities, futures, and options across global venues (e.g., NYSE, CME, Refinitiv RTS, Bloomberg B-PIPE). Optimize for micro- and nanosecond latency using lock-free data structures, cache-friendly memory layouts, and kernel-bypass networking where appropriate. Build reusable libraries for message decoding, normalization, and publication to internal buses shared by research, simulation, and live trading systems. Collaborate with cross-functional teams to tune TCP/UDP multicast stacks, kernel parameters, and NIC settings for deterministic performance. Provide robust failover, gap-recovery, and replay mechanisms to guarantee data integrity under packet loss or venue outages. Instrument code paths with precision timestamping and performance metrics; drive continuous latency regression testing and capacity planning. Partner closely with quantitative researchers to understand downstream data requirements and to fine-tune delivery formats for both simulation and live trading. Produce clear architecture documents, operational run-books, and post-mortems; participate in a 24×7 follow-the-sun support rotation for mission-critical market-data services. Requirements BS/MS/PhD in Computer Science, Electrical Engineering, or related field. 3+ years of professional C++ (14,17,20) development experience focused on low-latency, high-throughput systems. Proven track record building or maintaining real-time market-data feeds (e.g., Refinitiv RTS/TREP, Bloomberg B-PIPE, OPRA, CME MDP, ITCH). Strong grasp of concurrency, lock-free algorithms, memory-model semantics, and compiler optimizations. Familiarity with serialization formats (FAST, SBE, Protocol Buffers) and time-series databases or in-memory caches. Comfort with scripting in Python for prototyping, testing, and ops automation. Excellent problem-solving skills, ownership mindset, and ability to thrive in a fast-paced trading environment. Familiarity with containerization (Docker/K8s) and public-cloud networking (AWS, GCP). Benefits Competitive salary, plus bonus based on individual and company performance. Collaborative, casual, and friendly work environment while solving the hardest problems in the financial markets. PPO Health, dental and vision insurance premiums fully covered for you and your dependents. Pre-Tax Commuter Benefits  Trexquant is an Equal Opportunity Employer

Core Systems, a leader in rugged computer and server solutions for mission-critical defense and industrial applications, is seeking a Computer Repair Technician to join our RMA and repair operations team. This position focuses on diagnosing, troubleshooting, and repairing customer-returned products and Core Systems–built servers. Resume Required. Key Responsibilities Perform diagnostics, troubleshooting, and repair on returned computer systems, servers, and components. Process RMA units through inspection, testing, and documentation. Repair hardware at the system, component, and board level when required. Assist in root cause analysis and corrective action reports for customer returns. Work closely with engineering and production teams to support continuous improvement. Maintain accurate service records and ensure timely turnaround of customer units. Qualifications Proven hands-on experience repairing computer systems, servers, or related IT hardware. Strong knowledge of hardware components (motherboards, CPUs, memory, storage, power supplies, etc.). Experience with diagnostic tools and test equipment. Ability to read schematics and follow technical documentation. Detail-oriented, organized, and able to work under time-sensitive conditions. Previous experience in an RMA/repair environment is a MUST. Familiarity with ruggedized or military/industrial computer systems a plus. What We Offer Competitive pay and benefits package. A chance to work with cutting-edge technology in the defense and industrial markets. Collaborative, supportive team environment. Opportunities for growth and advancement within the company.

SciTec is a dynamic small business, with the mission to deliver advanced sensor data processing technologies and scientific instrumentation capabilities in support of National Security and Defense, and we are growing our creative team! We support customers throughout the Department of Defense and U.S. Government in building innovative new tools to deliver unique world-class data exploitation capabilities. Important Notice: SciTec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. SciTec cannot sponsor or assume sponsorship of employee work visas of any type. Further, U.S. citizenship is a requirement to obtain and keep a security clearance. Applicants that do not meet these requirements will not be considered. SciTec has immediate opportunities for talented software & algorithm developers and engineers to support programs focusing on low-latency data processing, fusion, and tracking algorithms for exploitation of remote sensing systems. Our ideal candidate will work well in multiple software languages as part of a rapid pace, collaborative, small-team environment consisting of Scientists, Engineers, and Developers and be able to prototype and develop advanced algorithms leading to eventual integration in C++ on Linux operating systems as part of government frameworks. Responsibilities Research new algorithms and analysis techniques for remote sensor data exploitation Demonstrate fluent, idiomatic mastery of Python and/or C++; comfort with software design and architecture Develop proof-of-concept signal processing, image processing, and data exploitation tools in Python Characterize quality/performance of algorithms and sensor systems Work as part of an Agile team and contribute to shared tools Other duties as assigned Requirements Colorado Residents: In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information. A bachelor’s degree in the physical sciences, mathematics, engineering, or computer science At least five years of ongoing professional experience in defense and/or defense-related technological fields (additional years of education may be substituted for years of experience) Professional experience with state estimation, tracking, or Guidance, Navigation, and Control (GNC) Professional experience and fluency in the following languages: C++, Python Fluency with Linux operating systems Ability to work full-time in-person in Boulder, CO office location Detail oriented with good verbal and written communication skills Candidates who have any of the following skills will be preferred A current active DoD SECRET security clearance or higher An advanced degree in the physical sciences, mathematics, engineering, or computer science Professional experience with application orchestration and/or deployment to the cloud Professional experience with Agile software development Professional experience with the exploitation and analysis of OPIR, E/O, SAR, Spectral, RF, or other remotely sensed data Benefits SciTec offers a highly competitive salary and benefits package, including: Employee Stock Ownership Plan (ESOP) 3% Fully Vested Company 401K Contribution (no employee contribution required) 100% company paid HSA Medical insurance, with a choice of 2 buy-up options 80% company paid Dental insurance 100% company paid Vision insurance 100% company paid Life insurance 100% company paid Long-term Disability insurance 100% company paid Hospital Indemnity insurance Voluntary Accident and Critical Illness insurance Short-term Disability insurance Annual Profit-Sharing Plan Discretionary Performance Bonus Paid Parental Leave Generous Paid Time Off, including Holiday, Vacation, and Sick Pay Flexible Work Hours The pay range for this position is $117,000 - $168,000 / year. SciTec considers several factors when extending an offer of employment, including but not limited to the role and associated responsibilities, a candidate's work experience, education/training, and key skills. This is not a guarantee of compensation. SciTec is proud to be an Equal Opportunity employer. VETS/Disabled.

We are lawyers and have a real case going to trial in SF soon. At this legal focus group, we will present to you arguments from both sides and want to hear your honest opinions and advice about the case. That is your job. Just about everyone who participates in one of our focus groups find it fun and interesting. The focus group will be held at a hotel meeting room in the financial district. Lunch will be provided. It starts promptly at 9 AM. Please be on time. At the end of the focus group, you will be paid $300 in cash. To be considered for this focus group please attach either a resume or a few sentences about the kind of work you have done. You MUST MUST include your cell phone number. I will text successful applicants and give them further details on Sunday or Monday.

Join Staff4Me as a Senior Fullstack Developer specializing in Typescript and Javascript. In this pivotal role, you will leverage your extensive expertise to create robust web applications and contribute significantly to the architectural decisions of our projects. We’re looking for someone who thrives in a collaborative environment and is passionate about delivering high-quality, user-focused solutions. Key Responsibilities: Fullstack Development: Lead the design and development of scalable applications using Typescript and Javascript on both the front-end (React, Angular) and back-end (Node.js). Develop clean, maintainable code and conduct thorough testing to ensure high quality and performance. Implement responsive design principles to ensure applications are optimized for various devices. Collaboration: Work closely with stakeholders, including product managers and UI/UX designers, to gather requirements and translate them into efficient technical solutions. Actively participate in Agile ceremonies, ensuring alignment and communication within the team. Mentor and support junior developers, fostering a culture of learning and knowledge sharing. Quality Assurance: Establish and maintain best practices for code quality through code reviews, automated testing, and continuous integration. Troubleshoot and resolve bugs effectively, improving system performance and user experience. Continuous Improvement: Stay abreast of industry trends, tools, and technologies, recommending innovations that can enhance our product offerings. Analyze application performance and implement optimizations where necessary. DevOps Collaboration: Work with DevOps teams to optimize deployment pipelines and application monitoring, ensuring smooth operation in production environments. Help establish CI/CD processes for efficient code deployment. Qualifications: Requirements Bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent experience. 5+ years of professional experience in fullstack development, specifically with Typescript and Javascript. Proficiency in front-end frameworks such as React or Angular and back-end technologies like Node.js. Strong knowledge of RESTful APIs and database management (both SQL and NoSQL databases). Experience with cloud services (AWS, Azure, etc.) and familiarity with containerization (Docker, Kubernetes) is highly preferred. Ability to work within Agile methodologies and foster collaboration among cross-functional teams. Excellent communication skills and a proactive approach to problem-solving. A strong commitment to code quality and best practices.

About Us We’re a growing small business providing personalized IT support to clients across Rockland, Westchester, and New York City. Our mission is simple: solve problems thoroughly, patiently, and with dedication. We pride ourselves on being the trusted tech partner for individuals and small businesses alike. Role Overview We’re seeking a versatile and reliable IT Technician to provide software support across PC and Mac platforms. This role combines remote troubleshooting with onsite field visits, so a clean driver’s license and personal vehicle are essential. Responsibilities • Provide software support for both Windows and macOS environments • Troubleshoot and resolve client issues using AI tools and research as needed • Manage and respond to service requests via a work ticket system • Support and configure Microsoft Office 365 products, including Outlook, Word, Excel, and Teams • Assist with SharePoint and OneDrive setup, syncing, and permissions • Perform basic network troubleshooting and repair, especially for small Wi-Fi setups • Offer support for TV, streaming, and AV products when needed • Deliver remote and onsite support across our service area Requirements • Experience supporting PC and Mac platforms • Familiarity with Microsoft Office 365 suite and cloud services • Working knowledge of SharePoint and OneDrive on M365 • Strong troubleshooting skills with the ability to research and resolve issues independently • Basic networking skills, especially for small office/home Wi-Fi setups • Ability to use and manage a work ticket system • Clean driver’s license and reliable personal vehicle • Excellent communication, patience, and attention to detail • Commitment to solving client problems with care and professionalism ** Bonus Skills • Experience with AV setups, streaming devices, and smart TVs • Basic network wiring and crimping • Prior field service or remote support experience