Partner Support Engineer

US | Remote | Full-Time

About AtomicVest

We are a fast-growing, mission-driven company powering the expansion of financial services and wealth creation globally. We build critical financial infrastructure that allows consumer-facing companies to offer engaging investing experiences to their customers in a frictionless way. We host advanced investing capabilities ranging from ESG investing to multi-currency trading across 60 global markets. We are a team of financial empowerment enthusiasts that have come together from various industries including tech, banking, finance, and law.

The company has raised $55M in funding and is positioned to rapidly scale. Come join an exciting opportunity to make a lasting impact!

About the role

We're looking for a Partner Support Engineer to join our Solutions Engineering function and own strategic, white-glove issue resolution for Atomic's growing partner base. You'll report to the Head of Solutions Engineering and serve as the front line for complex technical inbound requests from partners, triaging production issues, debugging integrations, and delivering responses within service-level agreements.

Atomic's partner volume is scaling rapidly. Accounts on the platform are growing quickly, multiple new partners are launching in the coming weeks, and our partner pipeline continues to expand. This role exists to ensure every partner receives fast, precise, expert-level support as that footprint grows. .

Atomic is a remote-first company; candidates based in the US are preferred, with New York metro or San Francisco Bay Area a plus.

Key Responsibilities

Incident Triage & Issue Resolution

Own complex technical inbound partner requests on production issues, performing root-cause analysis and delivering responses within SLA.

Triage incoming issues to determine whether a problem is a partner configuration error, a documentation gap, or a genuine platform defect requiring an engineering ticket.

Step in to help non-technical internal teams (Partnerships, Customer Support) resolve operational and integration-related issues that require technical depth.

API & Integration Support

Read and debug API traffic, webhooks, and integration behavior to diagnose partner issues without escalating by default.

Provide precise, written technical explanations to partner engineering teams under time pressure.

Identify recurring integration patterns and common failure modes, feeding insights back to Engineering and Documentation teams.

Partner Operations at Scale

Manage an increasing volume of partner support requests as Atomic's partner base grows from dozens to hundreds.

Maintain and improve internal tooling, runbooks, and documentation to enable faster resolution and reduce repeat issues.

Collaborate with the Partnerships team to ensure a seamless post-launch support experience for newly onboarded partners.

Cross-Functional Collaboration

Partner with Engineering to escalate genuine platform defects with clear reproduction steps and business context.

Work with Customer Support to align on resolution workflows for end-user issues that trace back to partner integrations.

Contribute to the development of self-service resources and partner-facing documentation

Qualifications

3–5 years of experience in a solutions engineering, technical support engineering, or partner/customer support engineering role

Experience owning inbound technical requests against a service-level agreement in a B2B or platform context

Proven ability to read and debug API traffic, webhooks, and integration behavior without escalating by default. Experience building and replaying requests with curl or Postman, and reading raw HTTP requests and responses (headers, status codes, JSON payloads)

Hands-on experience with RESTful APIs, JSON payloads, HTTP status codes, and common integration patterns.

Webhook debugging: delivery and retries, signature verification, and diagnosing missed, late or duplicate events

Working knowledge of API authentication, including API keys and HMAC request signing, and of idempotency keys and retry behavior