Senior Software Engineer - Infrastructure

Arcesiumllc; New York (NY); On-site; USD 175,000 - 210,000; Full time

Job summary

Arcesium is seeking an accomplished Senior Software Engineer for the Infrastructure Engineering organization to design, build, and operate core infra that powers our platform across AWS and Linux.

You will own subsystems, drive reliability, and collaborate with multiple teams to deliver scalable, high-performance infrastructure. A strong emphasis on automation, observability, and security underpins this role.

Qualifications

• 3–5+ years of infrastructure experience or equivalent demonstrated impact.
• Ownership of critical infrastructure systems and delivery of reliability improvements.
• Polyglot programming with Python/Java/Go/Bash in a large infra context.
• Experience running workloads in AWS and cloud environments.
• Ability to balance delivery with correctness and risk management.

Responsibilities

• Build and operate reliable, well-instrumented infrastructure services across multiple areas.
• Strengthen compute platform using AWS and Kubernetes.
• Develop tools and automation to reduce toil and accelerate infrastructure work, leveraging GenAI where appropriate.
• Own subsystems or services and deliver high-quality work both individually and as part of a team.
• Drive process improvements and define metrics to maximize impact for engineering teams.
• Be a member of Arcesium Infrastructure organization and support the customer-facing Platform.

Skills

Kubernetes ownership

Cloud infrastructure

Polyglot programming

Reliability engineering

Collaboration

Tools

AWS

DNS

Linux

Job description

Company Overview

Arcesium is a global financial technology firm that solves complex data-driven challenges faced by some of the world’s most sophisticated financial institutions. We constantly innovate our platform and capabilities to meet tomorrow’s challenges, anticipate the risks our clients encounter, and design advanced solutions to help our clients achieve transformational business outcomes.

Financial technology is a high-growth industry as change and innovation continue to disrupt the status-quo and prompt major transformation. Arcesium is at a particularly interesting time in our own growth as we look to leverage our successfully established market position and expand operations in pursuit of strategic new business opportunities. We value intellectual curiosity, proactive ownership, and collaboration with colleagues, and we empower you to meaningfully contribute from day one and accelerate your professional development.

Position Summary

Arcesium seeks an accomplished Senior Software Engineer to join our Infrastructure Engineering organization, the team that builds and operates the core foundation Arcesium’s applications run on. You’ll bring a deep commitment to reliability, scalability, and performance — and Infrastructure is where that commitment carries the furthest: a change made once, at the foundation, takes effect across the entire engineering organization.

In this role you'll work across multiple functional areas within Infrastructure — including Developer Experience (AI, Observability, SDLC), Cloud Account Management, Compute, Connectivity, Customer Integration, Security, and Solutions Architecture — all built on top of AWS and Linux. You'll own one or more subsystems or services, delivering high-quality work both individually and as part of a collaborative team.

You must demonstrate high agency: combining systems thinking, a bias to action, and the willingness to challenge assumptions to assess and address the infrastructure needs, challenges, and concerns of engineering teams across Arcesium.

Responsibilities

• Build and operate reliable, well-instrumented infrastructure services — spanning all of Infrastructure’s functional areas — that other engineers and our customer-facing applications depend on for high availability
• Strengthen our compute platform, leveraging AWS and Kubernetes
• Craft tools and automated solutions that streamline processes, reduce toil, and improve efficiency — applying modern tooling and, where it fits, GenAI to accelerate how infrastructure is built and operated
• Take ownership of critical technology infrastructure built on top of multiple underlying technologies, tools, and programming languages
• Drive process improvements and evangelize engineering best practices; help define and track the metrics that ensure we are prioritizing work that has the most impact
• Act as a member of the broader Infrastructure organization at Arcesium, which provides the foundation upon which our customer-facing Platform runs

Qualifications

• 3–5+ years of relevant infrastructure experience. However, we are interested more in what you've done, can do, and can grow to do, rather than the number of years you've been working.
• A proven track record of ownership of critical infrastructure systems and delivery of features that measurably improve reliability and efficiency. You have owned and operated systems such as Kubernetes, cloud infrastructure, DNS, or authentication services.
• Polyglot programming capability, with advanced ability in at least one language. We expect engineers within Infrastructure to be proficient and prolific software engineers. Languages in our ecosystem include Python, Java, Go, and Bash.
• Experience running critical workloads in AWS is highly valued.
• An ability to balance delivery with correctness, delivering timely solutions that are properly risk-managed for the needs of the business.
• A curious mind, enthusiasm for technology infrastructure, strong collaboration and communication skills, and the drive to take initiative with the right combination of independence and teamwork

The expected annual base salary for this position is $175,000 - $210,000. Our compensation package includes variable compensation in the form of a year-end bonus, guaranteed in the first year of hire, benefits including medical and prescription drug coverage, and 401k contribution matching.

The applicable annual base salary paid to a successful applicant will be determined based on multiple factors including without limitation the nature and extent of prior experience and educational background. #LI-JS1 #LI-hybrid

Arcesium's Personal Data Privacy Notice for Candidates is linked here.

Recruiting Security

Emails from genuine Arcesium recruiters who are employees of the company will always come from the @arcesium.com domain. In some cases, you may also be contacted by independent search firms engaged to recruit on our behalf; emails from their employees should always come from their firm's applicable domain. We'll never ask for your banking information or any payment as part of the recruiting process. If something seems off or you're contacted by an unexpected third party, please reach out to us at [e-mail] (US/UK), [e-mail] (India) or [e-mail] (Portugal/Sweden).

Arcesium is an equal opportunity employer.