OneChronos

Overview and Job Description OneChronos is seeking a highly experienced Senior DevOps Engineer to drive the deployment, automation, and scaling of our periodic auction matching infrastructure. You will work across on-premise and cloud environments, ensuring reliable, secure, and scalable infrastructure that supports our mission-critical systems.  This role requires deep expertise in infrastructure automation and workflow orchestration, with the ability to evaluate and implement the best tools and technologies for our needs. While we are open to innovation, we currently utilize Ansible, Terraform, and Temporal, and familiarity with these is required. About (www.OneChronos.com) OneChronos is a technology company of diverse thinkers innovating at the intersection of capital markets, mechanism design, and operations research, working to grow the global GDP by designing and operating matching markets leveraging advances in auction theory and artificial intelligence. Our software and systems are developed in house and match billions of dollars per day of security transactions. Responsibilities Design, deploy, and maintain infrastructure for both on-premise and cloud environments Implement and maintain workflow orchestration to ensure reliability and fault tolerance Ensure high availability and performance of systems through monitoring, alerting, and automation. Collaborate with software engineering teams to integrate DevOps best practices into the development lifecycle Implement CI/CD pipelines for deployment automation Maintain compliance and security best practices for infrastructure Skills and Qualifications 8+ years of experience in DevOps Strong familiarity with vendor neutral infrastructure as code (IaC) tools such as Ansible, Terraform, and Temporal Deep expertise in infrastructure automation and orchestration Knowledge of networking fundamentals Extensive knowledge of on-premise and cloud-based architectures Hands-on experience with Linux systems administration Ability to assess, recommend, and implement the best tools for infrastructure management, monitoring, and automation Strong problem-solving skills and the ability to operate in a highly technical, fast-paced environment Benefits at OneChronos include Competitive compensation (salary, potential bonus, potential ownership interest) Hybrid and remote work flexibility Medical, dental and vision insurance for employees and dependents Subsidized fitness programming Subsidized health & wellness program Competitive vacation policy Life insurance 401(k) plan Office snacks and drinks Pre-tax transportation program Annual company destination offsite Significant daily opportunities to be challenged, learn and grow Opportunity to work with a diverse group of people who care about each-others progress as much as that of the business success Ability to be excited about and proud of your business. Everyday OneChronos is committed to equal employment opportunities to all employees and applications regardless of academic area of study, race, color, religion, creed, age, national origin or ancestry, ethnicity, sex, sexual orientation, gender identity or expression, disability, military or veteran status, or any other category protected by federal, state or local law.

OneChronos is seeking a Site Reliability Engineer (SRE) to own the reliability, performance, and operational integrity of our trading platform across US, UK, and European market hours. This role exists because our platform matters. It processes billions of dollars in securities transactions daily, and when something degrades or fails, it needs to be understood and corrected quickly—and prevented from recurring. This is a senior, high-autonomy role for someone who treats production as a first-class system. You will operate at the intersection of software engineering and real-time systems, combining deep debugging ability with a bias toward automation, observability, and systemic reliability improvements. Over time, you will reduce operational burden on the engineering team by building the systems and practices that make the platform inherently more resilient. About OneChronos (www.OneChronos.com) OneChronos is a technology company of diverse thinkers innovating at the intersection of capital markets, mechanism design, and operations research, working to grow the global GDP by designing and operating matching markets leveraging advances in auction theory and artificial intelligence. Our software and systems are developed in house and match billions of dollars per day of security transactions. What You'll Do Own the reliability and performance of the trading platform across US, UK, and EU market hours Design, build, and maintain observability systems (metrics, logging, tracing, alerting) that provide clear, actionable insight into system behavior Triage, diagnose, and resolve production issues end-to-end across infrastructure, services, trade lifecycle, and market data systems Lead incident response, including mitigation, root cause analysis, and post-mortems with a focus on systemic fixes Build automation and tooling to eliminate manual operational work and reduce mean time to detect and resolve issues Define and improve SLOs, alerting strategies, and reliability standards across the platform Partner closely with software engineers to debug complex issues and drive reliability improvements back into system design Improve deployment and release processes, including validation, rollback strategies, and production safety mechanisms Expand and maintain runbooks and operational playbooks for critical systems Serve as a real-time operational point of contact during market hours, providing clear and accurate communication during incidents Build and maintain infrastructure and deployment automation using Ansible, Terraform, and custom scripts to ensure consistent, reliable releases Who You Are 5+ years of experience in Site Reliability Engineering, production engineering, or high-performance technical operations in trading or similarly demanding systems Strong systems-level debugging skills across distributed services, networking, and Linux-based environments Experience building and operating observability stacks (e.g., metrics, logs, tracing) and designing effective alerting Proficient in Python or similar for automation and tooling—you build systems, not just respond to them Solid SQL skills with the ability to investigate production datasets directly Deep familiarity with FIX protocol and the realities of operating live trading systems Strong understanding of trade lifecycle, market data flows, and equities/FX market structure Comfortable owning production during high-pressure market hours and making sound, independent decisions A track record of turning recurring issues into engineered solutions that eliminate entire classes of problems Motivated by building reliable systems, not just reacting to failures Compensation $150,000 to $200,000, plus potential bonus and ownership interest

We’re hiring for our Business Development team in New York City to support our U.S. Equities and FX businesses, with potential to expand into new markets. This is a fast-paced, hands-on role at a growing startup—focused on ensuring smooth platform operations, onboarding clients, and monitoring live trading activity. You’ll work closely with both business and engineering teams to automate processes, build internal tools, and move quickly on new initiatives. The role also includes supporting research and analysis across regions and asset classes, and stepping in wherever needed—whether that’s troubleshooting, contributing to product development, or helping scale operations. Responsibilities Ensure the successful onboarding of new and existing customers Monitor live trading activity and platform performance, and provide level-one, first-class customer support for both technical and trade resolutions Provide timely and professional outbound communications (internal and external) servicing the platform during normal business hours Support OneChronos’ Business Development team with analysis, research, and day-to-day activities across regions and asset classes. Assist with new initiatives, product development, and troubleshooting both real-time production data and long-term infrastructure challenges. Collaborate with technical teams to automate processes. Participate in holiday coverage when necessary Qualifications 1–3 years of work experience, with a degree in Engineering, Computer Science, Mathematics, Economics, Business, or a related field Experience in financial markets at an investment bank or similar is preferred; however, experience as a solutions architect, software engineer, or product specialist at a technology company will also be considered. Proficiency in Python and database languages (e.g., SQL, KDB). Prior experience automating tasks is preferred. Strong analytical and problem-solving skills, with the ability to manage incidents in a time-sensitive environment. Excellent interpersonal, written, and verbal communication skills. A strong work ethic and a commitment to seeing complex projects through from conception to completion. Ability to work across disciplines and quickly transition between projects. Strong attention to detail and a keen interest in technology and trading. Salary range: $100,000-$125,000 with eligibility for a discretionary annual bonus. Actual base pay is subject to change, and is dependent upon a number of factors, including work experience, skills, and training.  OneChronos is committed to providing equal employment opportunities to all employees and applicants, regardless of academic area of study, race, colour, religion, creed, age, national origin or ancestry, ethnicity, sex, sexual orientation, gender identity or expression, disability, military or veteran status. As an equal opportunity employer, we recognize that diversity is a huge positive attribute and we welcome the differences and benefits that a diverse culture brings.

OneChronos is a technology company of diverse technologists, scientists, and market structure enthusiasts innovating at the intersection of capital markets, mechanism design, and operations research. We strive to grow global GDP by designing and operating matching markets leveraging advances in auction theory and artificial intelligence.  We’re expanding our Business Development team in New York City to support analytics and research for OneChronos’ U.S. Equities, with potential to expand into new markets over time. This position sits at the intersection of data analysis, market microstructure research, and client-facing communication. You will work across business lines to analyze trading data, develop statistical frameworks, and produce research that directly informs both product development and commercial strategy. This is a high-impact, hands-on role in a fast-growing startup environment. Your work will shape how OneChronos measures execution quality, evaluates market dynamics, and communicates its value proposition to institutional clients. You will collaborate closely with Product, Engineering, Sales, and Analytics teams, translating rigorous analysis into insights that drive real-world decisions. What You’ll Do Analyze large-scale trading and market microstructure datasets to identify patterns, measure execution quality, and support internal and external research initiatives. Design and implement statistical tests and analytical frameworks to evaluate trading performance, execution outcomes, and market behavior. Produce clear, rigorous written analysis for internal research reports, product documentation, and client-facing materials. Collaborate with engineering and product teams to translate research findings into product improvements, metrics, and new features. Support business development efforts by providing analytical context, data-driven narratives, and empirical evidence that reinforce OneChronos’ market positioning. Analyze engagement and demand signals to identify patterns in what resonates with the market, and surface insights to Sales, Product, and Analytics teams. Help shape and refine the firm’s demand-generation playbooks, processes, and internal operating rhythms as the organization scales. Who You Are Your academic background reflects rigorous quantitative training (Bachelor’s or Master’s degree in a quantitative field such as statistics, mathematics, physics, computer science, economics, or a closely related discipline). Strong foundation in probability, statistics, and hypothesis testing, with comfort reasoning about statistical significance, uncertainty, and effect sizes. Excellent proficiency in Python and SQL, with experience working directly with large, messy datasets. Demonstrated ability to extract meaningful conclusions from complex data and clearly articulate what the data shows–and what it does not. Outstanding written and verbal communication skills, with experience presenting analytical findings to both technical and non-technical audiences. Intellectual curiosity about financial markets, electronic trading, and market structure; prior exposure to trading or market microstructure is a plus but not required. Salary range: $100,000-$125,000 with eligibility for a discretionary annual bonus. Actual base pay is subject to change, and is dependent upon a number of factors, including work experience, skills, and training. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability, genetic information, veteran status, or any other characteristic protected by applicable law. OneChronos is committed to providing equal employment opportunities to all employees and applicants, regardless of academic area of study, race, color, religion, creed, age, national origin or ancestry, ethnicity, sex, sexual orientation, gender identity or expression, disability, military or veteran status. As an equal opportunity employe

Overview and Job Description OneChronos is seeking an Engineering Manager to lead the design and execution of complex, high-performance trading systems that power our periodic auction matching infrastructure. This role bridges technical leadership and product development, working closely with both business stakeholders and engineers to design, refine, and deliver stable, highly accurate systems on time. The ideal candidate is comfortable managing engineering execution, accurately scoping work (including time and staffing needs), and contributing to production code. OneChronos is a fast growing company and this role will help shape and evolve our engineering process as the team expands. About (www.OneChronos.com) OneChronos is a technology company of diverse thinkers innovating at the intersection of capital markets, mechanism design, and operations research, working to grow the global GDP by designing and operating matching markets leveraging advances in auction theory and artificial intelligence. Our software and systems are developed in house and match billions of dollars per day of security transactions. Skills and Qualifications 7+ years of software engineering experience, with 2+ years in a leadership or technical decision-making role Passion for the craft of writing high-quality code meant to be read and easily understood by a growing team Strong ability to accurately scope work, estimating both the time required and the engineering capacity needed to deliver it effectively Strong ability to communicate complex system architectures effectively Strong communicator and collaborator in and across business and product teams to identify and refine product requirements Hands-on engineering skills, with proficiency in a systems-level language (e.g., Rust, C++, Java) A polyglot mindset Background in distributed systems, performance optimization, and high-throughput computing Track record of delivering complex engineering projects on time, balancing technical trade-offs with business needs Commitment to software stability, accuracy, and robustness, with a strong focus on testing and validation Experience leading engineering execution, ensuring clear prioritization and alignment across teams Familiarity with production systems, CI/CD pipelines, and incident management Understanding of financial market structure or a strong ability to learn and adapt quickly to market mechanics Benefits at OneChronos include Competitive compensation (salary, potential bonus, potential ownership interest) Hybrid and remote work flexibility Medical, dental and vision insurance for employees and dependents Subsidized fitness programming Subsidized health & wellness program Competitive vacation policy Life insurance 401(k) plan Office snacks and drinks Pre-tax transportation program Annual company destination offsite Significant daily opportunities to be challenged, learn and grow Opportunity to work within a diverse team that values the success of others to be critical to the overall success of the business Ability to be excited about and proud of your business. Everyday OneChronos is committed to equal employment opportunities to all employees and applications regardless of academic area of study, race, color, religion, creed, age, national origin or ancestry, ethnicity, sex, sexual orientation, gender identity or expression, disability, military or veteran status, or any other category protected by federal, state or local law.

Our systems operate at the massive speed and scale of algorithmic trading. We process terabytes of data and billions of rows each day, and every layer of the platform must be engineered for performance and reliability. As a small team, we are continuously evolving our analytics platform to keep pace with growing datasets and increasingly complex analytical workloads. We are seeking a software engineer who enjoys building the systems that make large-scale data usable. This role sits at the intersection of data engineering and backend development, focused on building and improving the infrastructure that powers our analytics platform. That includes designing data pipelines, workflow orchestration, and internal tooling that supports high-volume, time-sensitive data processing. The ideal candidate is comfortable working with both real-time and historical data streams and has experience managing end-to-end data workflows. You will help design and maintain the services, pipelines, and platform infrastructure that support our analytics initiatives, working closely with both engineering and the business to turn complex datasets into usable systems. This role is based in one of our offices in New York, London, or Amsterdam, with hybrid flexibility. What You’ll Do Work with engineers and business teams to understand our datasets and build systems to store, process, and productionize them. Develop and maintain reliable data pipelines and workflow systems for large-scale data ingestion and transformation. Build internal services and tooling that support analytics, automation, and data operations. Implement ETL and data transformation processes for analytical databases and internal applications. Develop and maintain workflow orchestration for complex data processes. Optimize storage, retrieval, and processing performance across large datasets. Partner with analysts and researchers to support data modeling and analytics workflows. Monitor and troubleshoot data infrastructure to ensure reliability and data integrity. Continuously improve the platform through better system design, tooling, and engineering practices. Who You Are You have a Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent hands-on experience. You bring around 3-5 years of experience building internal data platform tooling or services that support large-scale data processing and analytics workflows (primarily using Python and SQL; Rust is a plus). You’ve worked with workflow orchestration systems used to manage complex data pipelines (Temporal, Airflow, Dagster, or similar). You’re familiar with columnar data formats such as Parquet or Arrow. You have experience working with large-scale datasets and high-volume data pipelines in production environments. Experience working with analytics platforms, data providers, or financial data systems is a plus. You have an entrepreneurial mindset and genuinely enjoy building things and solving hard problems OneChronos is committed to equal employment opportunities to all employees and applications regardless of academic area of study, race, color, religion, creed, age, national origin or ancestry, ethnicity, sex, sexual orientation, gender identity or expression, disability, military or veteran status, or any other category protected by federal, state or local law. As an equal opportunity employer, we recognize that diversity is a huge positive attribute and we welcome the differences and benefits that a diverse culture brings.

OneChronos systems match billions of dollars in transactions daily on infrastructure where the margin for error is as thin as the markets demand. Our engineering team has scaled its output faster than most, and that growth has created a clear opportunity: to build a dedicated quality engineering function proactively -- not as a response to problems, but as the natural next step for a team firing on all cylinders. We rebuilt market structure from first principles. Help us build the quality platform that scales with it. We're looking for someone to own quality as an engineering discipline. From test frameworks and CI/CD integrations to staging environments, simulation infrastructure, and automated validation, you'll build the systems that help engineers verify correctness before code reaches production. Your mission is to increase engineering velocity and confidence by making testing reliable, scalable, and easy to use across the organization. About OneChronos (www.OneChronos.com) OneChronos is a technology company of diverse thinkers innovating at the intersection of capital markets, mechanism design, and operations research, working to grow the global GDP by designing and operating matching markets leveraging advances in auction theory and artificial intelligence. Our software and systems are developed in house and match billions of dollars per day of security transactions. What You'll Do Design, build, and maintain automated test frameworks and testing infrastructure across our trading platform, covering correctness, performance, and reliability. Develop tooling that enables engineering teams to test their own code more effectively, without creating bottlenecks. Define test strategies for new features and system changes in partnership with engineering, SRE, and DevOps teams. Build and own CI/CD pipeline integrations that gate deployments on meaningful quality signals. Build testing infrastructure and validation tooling that surfaces regressions and correctness issues before they reach production. Investigate test failures, quality gaps, and escaped defects, driving structural improvements to prevent recurrence. Participate in design and architecture reviews to identify testability gaps early. Who You Are You write production-quality code and treat test infrastructure the same way -- not as scaffolding, but as software that needs to be maintained and improved. You have strong experience with test automation frameworks, testing infrastructure, and developer tooling, and have built or meaningfully extended one from scratch. You're fluent in at least one systems-oriented language (Rust, C++, Go, or Java) and at home in Python for scripting and tooling. You have worked in low-latency, high-throughput, or otherwise performance-sensitive environments and understand what it means to test at that layer. You think in edge cases. You're the person on the team who asks "but what happens if..." You work fluidly across organizational lines -- with SRE on reliability, with DevOps on deployment pipelines, with product engineers on correctness. Financial markets or trading systems experience is a plus, not a requirement. Curiosity about the domain is. Compensation Base salary range: $150,000 -- $200,000, depending on experience, with eligibility for a discretionary annual bonus.

Overview and Job Description OneChronos is seeking a software engineer to design and optimize high-performance trading systems that power our periodic auction matching infrastructure. This is a systems programming role focused on low-latency, high-throughput distributed computing, with exposure to infrastructure and DevOps. The ideal candidate has experience building real-time, performance-sensitive systems and thrives in a collaborative, research-driven environment at the intersection of mechanism design and financial markets. As a software engineer at OneChronos, your work will span order and data workflow, periodic auction execution, system reliability, and performance optimization, ensuring the platform is efficient, fault-tolerant, and capable of handling complex trade matching at scale. About (www.OneChronos.com) OneChronos is a technology company of diverse thinkers innovating at the intersection of capital markets, mechanism design, and operations research, working to grow the global GDP by designing and operating matching markets leveraging advances in auction theory and artificial intelligence. Our software and systems are developed in house and match billions of dollars per day of security transactions. Skills and Qualifications 3+ years of professional software engineering experience Passion for the craft of writing high-quality code meant to be read and easily understood by a growing team Proficiency in a systems-level programming language (e.g., Rust, C++, Java), with Rust being a plus A polyglot mindset Highly detail-oriented, with a focus on ensuring correctness, consistency, and reliability Passionate about low-latency, high-performance computing, and memory management Comfort working with large-scale data pipelines and event-driven architectures Ability to write clean, well-tested code and collaborate in a highly technical team Hands-on experience with production systems and an understanding of operational challenges Experience with CI/CD pipelines, automated testing, and deployment best practices Benefits at OneChronos include Competitive compensation (salary, potential bonus, potential ownership interest) Hybrid working flexibility Healthcare insurance/healthcare insurance allowance (geography dependent) Health & Wellness allowance Competitive vacation policy Competitive Pension Plan Office snacks and drinks Travel season ticket loan Significant daily opportunities to be challenged, learn and grow Opportunity to work with a diverse group of people who care about each-others progress as much as that of the business success Ability to be excited about and proud of your business. Everyday  OneChronos is committed to equal employment opportunities to all employees and applications regardless of academic area of study, race, color, religion, creed, age, national origin or ancestry, ethnicity, sex, sexual orientation, gender identity or expression, disability, military or veteran status, or any other category protected by federal, state or local law.