Partner Support Engineer

Atomic Invest

1d•Remote

About The Position

AtomicVest is a fast-growing, mission-driven company building financial infrastructure that enables consumer-facing companies to offer investing experiences. Its platform supports capabilities including ESG investing and multi-currency trading across 60 global markets. The company has raised $55 million and is scaling its partner base. The Partner Support Engineer joins the Solutions Engineering function and owns strategic, high-touch technical issue resolution for Atomic's partners. Reporting to the Head of Solutions Engineering, this role is the front line for complex inbound partner requests: triaging production issues, debugging integrations, performing root-cause analysis, and responding within service-level agreements. The role supports a rapidly growing partner base and collaborates with Engineering, Partnerships, and Customer Support to resolve issues and improve support operations. Atomic is a remote-first company. Candidates based in the US are preferred, with the New York metro area or San Francisco Bay Area considered a plus.

Requirements

3–5 years of experience in solutions engineering, technical support engineering, or partner/customer support engineering.
Experience owning inbound technical requests against a service-level agreement in a B2B or platform context.
Ability to 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, including headers, status codes, and JSON payloads.
Hands-on experience with RESTful APIs, JSON payloads, HTTP status codes, and common integration patterns.
Webhook debugging experience, including delivery and retries, signature verification, and diagnosing missed, late, or duplicate events.
Working knowledge of API authentication, including API keys and HMAC request signing, as well as idempotency keys and retry behavior.
Ability to write SQL queries, including joins, filters, and aggregates, against PostgreSQL to trace records.
Experience scripting in Python or a similar language to reproduce issues, automate checks, and build internal tools.
Experience searching logs and traces in Datadog, Splunk, or a similar tool and following a request across services by trace ID.
Ability to read backend source code, ideally Go, to investigate platform behavior and root causes.
Comfort with Git/GitHub for reading code, history, and pull requests.
Clear, precise technical writing for partner engineering teams under time pressure, and judgment to distinguish partner configuration errors, documentation gaps, and platform defects.
Ability to work independently, prioritize multiple concurrent issues, and manage SLA timelines.
Strong communication skills for collaborating with technical and non-technical stakeholders.

Nice To Haves

Prior experience at a B2B API platform or financial infrastructure company.
Experience writing partner-facing documentation, integration guides, or runbooks.
Experience with Temporal workflow history, gRPC/Protocol Buffers, or Retool.
Knowledge of money movement and brokerage, including ACH, wire/Fedwire, ACATS, custody, KYC/KYB, and transaction monitoring.
Experience with Plaid or other bank-linking integrations, or Svix and similar webhook infrastructure.
Experience with incident and ticketing tools such as PagerDuty, Jira/Jira Service Management, or Confluence.

Responsibilities

Own complex inbound partner requests involving production issues, perform root-cause analysis, and respond within service-level agreements.
Triage issues to determine whether they result from partner configuration, documentation gaps, or platform defects requiring an engineering ticket.
Help non-technical internal teams, including Partnerships and Customer Support, resolve operational and integration-related issues requiring technical expertise.
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 failure modes and share insights with Engineering and Documentation teams.
Manage growing volumes of partner support requests as the partner base expands.
Maintain and improve internal tooling, runbooks, and documentation to speed resolution and reduce repeat issues.
Collaborate with Partnerships to support newly onboarded partners after launch.
Escalate genuine platform defects to Engineering with clear reproduction steps and business context.
Work with Customer Support on resolution workflows for end-user issues caused by partner integrations.
Contribute to self-service resources and partner-facing documentation.