Full Stack .Net Developer

Atto Trading, a dynamic quantitative trading firm founded in 2010 and leading in global high-frequency strategies, is looking for a Low-Latency Developer to join our team. We are expanding an international, diverse team, with experts in trading, statistics, engineering, and technology. Our disciplined approach combined with rapid market feedback allows us to quickly turn ideas into profit. Our environment of learning and collaboration allows us to solve some of the world’s hardest problems, together. As a small firm, we remain nimble and hold ourselves to the highest standards of integrity, ingenuity, and effort.  Position Highlights: We are modernizing our trading and research platform to scale our alpha trading business. This platform will enable researchers to explore, test, and deploy sophisticated signals, models, and strategies across asset classes in a robust, fully automated manner while maintaining competitive latency targets. As a Low-Latency Developer, you will be responsible for designing, optimizing, and maintaining high-performance trading systems to minimize latency. Your Mission and Goals: Analyze and optimize the performance of low-latency trading systems by identifying bottlenecks and inefficiencies in the code, and implementing effective solutions.  Develop and adapt the platform to support the demands of a fast-paced trading environment, while effectively managing technical debt. Requirements Over 5 years of experience as a low-latency developer with a focus on performance optimization in a high-frequency trading (HFT) environment. Experience with multiple components of an HFT platform or system, particularly those on the critical path. Experience working at an HFT firm during its startup phase and/or on a trading team is a significant plus. Technical Skills: Deep knowledge of HFT platforms: networking, kernel bypass, market data, order entry, threading, inter-process communication, and strategy APIs. Proven low-latency development and performance optimization in HFT. Strong proficiency in C++. Excellent understanding of CPU caches and cache efficiency. Experience with multithreaded and multi-process synchronization. Good understanding of networking protocols. Skilled in performance profiling and optimization tools. Advanced knowledge of Linux operating systems, including kernel-level device mechanisms. About You: Practical decision-making skills. Excellent communication skills. Strong analytical and problem-solving skills. Passion for trading. Ability to work independently and as part of a team. Benefits Competitive rates of pay. Paid time off (5 weeks). Coverage of health insurance costs. Office lunches. Discretionary bonus system.  Annual base salary range of $150,000 to $300,000. Pay (base and bonus) may vary depending on job-related skills and experience. Our motivation: We are a company committed to staying at the forefront of technology. Our team is passionate about continual learning and improvement. With no external investors or customers, we are the primary users of the products we create, giving you the opportunity to make a real impact on our company's growth. Ready to advance your career? Join our innovative team and help shape the future of trading on a global scale. Apply now and let's create the future together!

Booklog is looking for a level 1 – 3 technical support individual. This position is to provide outstanding technical support for Booklog software and various interfaces along with onboarding of new customers, testing of software and training on usage of software. We’re looking for a motivated individual to be part of our committed team. We need to be the experts so our customers don’t have to. Located in Chicago’s Andersonville neighborhood; telecommuting is available. Qualifications • At least 2 years experience in technical support, preferably phone support • Experience with Microsoft Windows operating systems • Familiarity with databases and database troubleshooting • Knowledge of computer network systems • Ability to troubleshoot software problems and offer solutions by phone • Good problem solving skills with attention to detail • Strong verbal, written, interpersonal, and organizational skills • Ability to work both independently and in a team environment • Experience with SQL Server 2022, Sybase SQL applications and databases • Ability and excitement to learn new skills • A ‘think outside of the box’ mentality • Customer Service experience • Software training experience a plus • Previous experience training customers on software usage • Experience with use of peripheral devices • 10% or less travel to customer locations within the US to train and install software Benefits • Casual environment with a great group of people who love what they do • In office or telecommuting options • 100% paid health insurance • 2 weeks vacation to start • Generous 401K options • Permanent full-time. PLEASE SEND RESUME WHEN APPLYING

Eagle Seven is seeking a Senior Software Developer focused on exchange connectivity and market data.  The individual will be responsible for analyzing exchange protocols, proposing design solutions, and implementing connectivity to trading venues across the world. The role be a part of the platform development team and will provide the individual with exposure to traders and strategy developers. The successful candidate will be a self-starter, have strong sense of ownership and be driven to provide technical and intellectual solutions to business problems.    Primary Responsibilities include: Architecting and implementing low-latency market access solutions Understanding, interpreting, and interfacing with global exchanges and their protocols Designing, developing, and supporting market data feed handlers and exchange order routers Diagnosing latency issues and resolving with appropriate tuning and optimizations Working with traders to source, evaluate and facilitate access to new data sources Working with extended team to capture, house, and provide historical access to market data Liaise with vendors on data and technical issues as needed to deliver rapid solutions to the business Requirements Skills and Experience: Bachelor’s degree in Computer Science or related field Proven track record of understanding and working with global exchange protocols Experience with writing parsers for exchange protocols such as FIX and ITCH, etc. Strong background in C++ and C++ Template metaprogramming with demonstrated experience using C++14/C++20 Expertise with TCP/IP, UDP multicast, sockets, network protocols, particularly on Linux/Unix systems Experience using network tools such as Wireshark and TCPDump to monitor and debug behavior Ability to work in a collaborative environment Excellent written and verbal communication skills Benefits Eagle Seven offers a competitive and comprehensive benefits package to all full-time employees. Medical PPO and HMO coverage through BlueCross BlueShield Company Contributions to a Health Savings Account (with enrollment into a High Deductible Health Plan) Dental coverage through Principal Vision coverage through VSP 401k Retirement Savings Plan with Employer Match Company Paid Life Insurance Company Paid Disability Insurance Paid Time Off Flexible Spending Account Pre-tax Transit Benefits Complimentary Lunch and Beverages The minimum base salary for this role starts at $150,000. This role is eligible for a discretionary performance bonus as part of the total compensation package, in addition to the benefits listed above. Exact compensation offered may vary based on factors including, but not limited to, the candidate's experience, qualifications, and skill set.

Location: Onsite – 5 days per week (DOWNTOWN CHICAGO) We are seeking a motivated Desktop Support Specialist to join our IT team. In this role, you will be responsible for providing day-to-day technical support for employees, ensuring computer systems and conference room technologies run smoothly. You’ll primarily manage issues remotely from your desk but will also handle hands-on tasks such as equipment setup and troubleshooting. Key Responsibilities : Provide helpdesk support to employees, including troubleshooting and resolving hardware, software, and network issues. Set up, configure, and maintain physical computer equipment and peripherals. Perform device provisioning for new and existing users (experience preferred). Troubleshoot issues related to conference room systems, with a focus on Google Meet setups. Utilize remote management tools to resolve the majority of technical support requests. Execute basic tasks in Linux terminal for system checks and troubleshooting. Collaborate with the IT team to maintain smooth operations and escalate issues when necessary. Qualifications : Previous experience in a desktop support or helpdesk support role. Strong knowledge of computer hardware setup and troubleshooting. Experience with provisioning processes is preferred. Familiarity with Linux terminal commands and basic troubleshooting. Excellent problem-solving and communication skills. Ability to work independently and manage multiple support requests effectively. Comfortable working onsite five days per week.

LDAP Software Engineer Location: Peru, IN Duration: Permanent role Responsibilities: * Work with upstream data source and downstream clients to resolve data related issues. * Assist in designing, developing, and implementing Data as A Service (DaaS) and support for microservices. * Perform data and log analysis. * Assist in designing, developing, and implementing flexible LDAP architecture for PaaS and SaaS applications. * Performance periodic maintenance as/when required. Requirements: * Performance periodic maintenance as/when required. * Assist in designing, developing, and implementing flexible LDAP architecture for PaaS and SaaS applications. * Work with upstream data source and downstream clients to resolve data related issues. * Assist in designing, developing, and implementing Data as A Service (DaaS) and support for microservices. * Perform data and log analysis. * Advanced knowledge of LDAP directories based on OpenDJ, Oracle (sun) or ForgeRock directories. * Expert in maintaining, troubleshooting issues in production environment. * Experience in installing and configuring Oracle DSEE 11g & OpenDJ, ForgeRock DS. Required Software Skills: * Directory Services (LDAP, MS Active Directory, MS Entra ID), including Group Policy, DNS, and DHCP Exchange / M365 * VMware vSphere/vCenter * Server and PC operating systems including Windows OS's and Linux * Citrix DaaS, and related components * Microsoft SQL Server and/or Oracle SQL along with database management utilities Recommended Working Knowledge * PowerShell * Git (GitHub / Gitlab) * TCP/IP * Networking OSI mode

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.