Job Description
Our employees are truly our greatest asset. We have spent years building a team of talented dedicated technologists data-driven traders and expert leaders with an emphasis on our core values: Collaboration Ethics Risk Management and Diverse Experience and Opinions. Simplex is an in-office organization helping to foster a collaborative and communicative culture.
Career Description
Simplex is looking for smart curious and driven individuals to join our technology team. Technology at Simplex is the core of the business. We are a leading technology-driven proprietary market-making firm. You will be someone excited by challenges and proactive in problem-solving.
What will you be doing?
- Develop and maintain monitoring and deployment systems (Systems and Network)
- Triage and respond to issues
- Prepare and execute changes to the Linux environment
- Maintain and deploy servers and workstations
- Projects will be completed both independently and as a part of a team when necessary
- This is an in-office position with occasional onsite work at several colocation facilities in Chicago Aurora and New Jersey
- Infrequent evening/weekend work to allow for change execution outside of trading hours
- Other opportunities as assigned
Skills and Experience:
- 3+ years of experience as a System Administrator Linux Administrator or similar
- Thorough understanding of Linux (kernel modules filesystems) with special emphasis on the network stack especially multicast and OpenOnload
- Experience working with Linux and standard tools (bash grep sed awk) and scripting languages (Python Perl bash)
- Understanding of Linux concepts (kernel modules memory allocation filesystems)
- Familiarity with common server technologies(IPMI SNMP) or software (Nagios Ansible dnf/rpm git)
- Experience troubleshooting complex performance issues
- Ability to lift and move heavy equipment (40-50 lb regularly)
Annual base salary ranges from $125000 to $200000 and is influenced by a number of factors including qualifications and experience. This role is also eligible for an annual discretionary bonus of which can be a significant portion of total compensation. This full time role is also eligible for other forms of compensation and benefits including health/dental/vision insurance and 401(k) contributions.
Why us?
Founded in Chicago in 2004 Simplex is a leading technology-driven proprietary market-making firm. We work with the most advanced technology and software in the market and we’ve continued to remain at the forefront of the industry by always focusing on innovation automation and data-driven analysis. We also leverage our experience and expertise to make strategic investments and capitalize on opportunities in the venture capital markets with promising early-stage financial and technology start-ups.
PLUS the goods!
- Benefits: Excellent a la carte Medical/Dental/Vision (free employee coverage!) 401(k) match generous parental leave!
- The Office: The kitchen is stocked with snacks and beverages; you also have daily stipends for breakfast and lunch!
- Tuition Reimbursement: As an investment in our employees’ careers and the company’s future we offer educational assistance to provide employees with professional development opportunities that increase their skills and enhance their contributions to the organization!
- Employee Discounts: To gyms national brands and more!
- Building: We are located in the Federal Reserve building. As a tenant you have access to a building gym and a full cafeteria. We are easily accessible to all public transportation.
- Charity Match: We match up to $2000 a year in donations to the charities of your choice!
- Fun Events: In-person happy hours celebrations throughout the year game nights video game fun and so much more!
Simplex is an Equal Opportunity Employer
Top Skills
What the Team is Saying
What We Do
Since our founding in 2004 Simplex has continued to remain at the forefront of the industry by focusing on innovation automation and data-driven analysis. Simplex is a leading technology-driven market-making firm that builds proprietary software to create and capitalize on financial opportunities. We combine talented and dedicated technologists with data-driven employees to solve constantly evolving puzzles in the marketplace. Specializing in US Equity Options and Future Options Simplex provides the liquidity essential to a competitive fairly-functioning marketplace. We continue to reinvent ourselves and evolve to best capitalize on financial market opportunity.
Why Work With Us
We are one team working towards a common collective goal and the collaborative environment we create allows our team’s talents to shine. We value highly-motivated passionate individuals with diverse opinions and experiences.
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Simplex Trading Offices
OnSite Workspace
As a part of our commitment to fostering collaboration innovation and team culture all employees in this role are expected to work onsite.
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Date Posted
04/12/2026
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