Freelance Software Developer (Rust) - 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

Need a media consultant to sell a movement/idea. Must have empathy for victims of gun violence.

About BestEx Research BestEx Research is a financial technology and research firm specializing in building sophisticated execution algorithms and transaction cost modeling tools servicing multiple asset classes. The firm provides its services to performance-demanding hedge funds, CTAs, asset managers, and banks through a traditional electronic broker and in a broker-neutral Software as a Service (SaaS) model. BestEx Research’s mission is to become the leader in automation and measurement of execution across asset classes globally and significantly reduce transaction costs for our clients. Its cloud-based platform, Algo Management System (AMS), is the first end-to-end algorithmic trading solution for equities, futures, and foreign exchange that delivers an entire ecosystem around execution algorithms, including transaction cost analysis (TCA), an algo customization tool called Strategy Studio, a trading dashboard, and pre-trade analytics in a single platform. The platform is currently live for US equity and global futures trading. BestEx Research is disrupting a $100 billion industry by challenging the status quo of stale, black-box solutions from banks and offering next-generation execution algorithms that combine performance improvement with transparency and customization. BestEx Research uses leading-edge technology to support its low-latency, highly scalable research and trading systems with its back end in C++, research libraries in C++/Python and R, and web-based technologies for delivering its front-end platforms. Visit bestexresearch.com for more information about our mission, products, research, and services. Why work at BestEx Research? If you want to help investors reduce their trading costs in an incredibly complex market structure and help create and shape an industry-defining product, then this is an excellent opportunity to join an incredibly talented team of 50+. BestEx Research has almost zero turnover, top notch clients, zero bureaucracy, and a flat organizational structure. It is a true meritocracy, set in a collaborative environment, where every employee is working on extraordinarily interesting projects. Compensation may be in the form of cash compensation or a hybrid cash and equity compensation plan. Employees at BestEx Research receive a lot of autonomy and accountability and have exposure to much more variety in the projects they complete and opportunities for growth than in similar roles at other firms. Location: Stamford, CT/New York, NY Our Stamford, CT is conveniently located in Stamford downtown and walking distance from train station. Free vale parking, Gym and other amenities are available. Some flexibility to work from home is available depending on your location but at least three days a week work from office is a requirement. Primary Job Responsibilities In this role, you will be responsible for architecture, design, and software development of various software components such as our core trading system, algo trading framework, execution algorithms, smart order routers, exchange simulators, market data adaptors and exchange connectivity adaptors. Projects will vary from developing software from scratch (for example implementing a new asset class or a new execution algorithm) to enhancing the current system to support new features or improving performance. Our trading software stack is written in C++ 17. Requirements For this role following are required: ● Expert-level knowledge of C++ and excellent software design skills ● Expert-level knowledge of TCP/IP and multithreading ● Excellent problem solving and analytical skills ● Excellent communication skills and ability to articulate ideas ● An attitude of constant curiosity and growth, as well as the ability and desire to mentor others ● Degree in Computer Science or similar field from a reputable institution The following are not required, but a combination of these skills and experiences is highly desirable: ● Prior experience working with market data, FIX, and other exchange connectivity protocols ● Prior experience developing trading systems or execution algorithms ● Experience with knowledge of relational databases, database optimizations and SQL ● Experience with Python/R, ability to work with large datasets in a research environment Benefits 4 weeks of vacation, healthcare and 401K

Middletown, CT (Direct Hire) Compensation: $40K - $80K (Guaranteed base for 3 months, uncapped commission) Are you a self-motivated individual? Have you worked in a restaurant? Do you wish to work from home and make your own schedule each week? Are you a sales winner with a passion for hands-on service? We specialize in providing essential refrigeration gaskets to food service businesses, ensuring their compliance with health regulations. We are dedicated to delivering top-quality products and exceptional service. The Position: Responsible for visiting clients to present critical products and perform installations. This unique role combines sales with hands-on service, allowing you to make a tangible impact in the industry. Responsibilities: Manage your sales territory and schedule client visits independently. Present and sell essential refrigeration gaskets to various food service establishments. Perform product installations (basic tool use, such as a screwdriver, is required). Continuously seek opportunities to grow your client base. Qualifications: Outgoing personality with strong communication and interpersonal skills. Ability to perform basic product installations. Enthusiasm for cultivating and maintaining long-term client relationships. Benefits: Competitive commission structure with uncapped earning potential. Guaranteed base salary for 3 months. Health, 401(k), phone and car allowance, and training. Please call 860-773-0059

Trexquant is a growing systematic fund manager with a core team of highly accomplished technologists. We apply a wide variety of statistical and machine learning techniques to build investment portfolios and trade our client assets in global equity and futures markets. With locations in the US, China and India, our global team in excess of 50 employees is comprised primarily of research professionals with advanced science, math and technology degrees who explore the universe of quantitative methods for opportunities to enhance and adapt our platform and profit in an exciting and dynamic environment. We are seeking a dedicated and detail-oriented Data Engineer to join our team. The primary goal of this team is to assist researchers in writing, downloading and reading scripts, effectively translating their ideas into data variables for trading purposes. The ideal candidate will have a strong background in data engineering, excellent scripting skills, and a keen understanding of financial data and trading strategies. Responsibilities Collaborate with researchers to understand their data requirements and trading strategies. Develop and maintain scripts for downloading, reading, and processing data from various sources. Ensure data accuracy, consistency, and reliability by implementing quality control measures. Optimize data retrieval processes for efficiency and performance. Assist in the integration of new data sources and formats into the existing data infrastructure. Provide technical support and troubleshooting for data-related issues. Document data workflows, processes, and scripts for future reference and knowledge sharing. Stay updated with industry trends and advancements in data engineering and financial data. Requirements A degree in a technical discipline (computer science, mathematics, statistics, physics, etc.)  1+ years of experience in Python as used in data capacity Experience in financial services and working with financial data providers is a plus Ability to work independently and take projects to completion, quickly learn new systems, think creatively and pay attention to details Benefits Competitive salary plus bonus bonus based on individual and company performance Collaborative, Casual, and friendly work environment PPO Health, dental and vision insurance premiums fully covered for you and your dependents Pre-tax commuter benefits Weekly company meals Trexquant is an Equal Opportunity Employer

looking for some that can edit a web site, and that social media posts!