Customer Success Engineer

Nxt Level; New York (NY); Hybrid; USD 140,000 - 190,000; Full time

Job summary

Nxt Level is hiring a Founding Solutions Engineer to own the technical onboarding and deployment of our platform for enterprise financial customers. You’ll work with banks, hedge funds, asset managers, and client teams to drive production-ready deployments.

This highly technical, customer-facing role requires deep expertise in APIs, data mapping, authentication, and enterprise integration. You will partner with product and engineering to deliver scalable onboarding and robust integrations.

Qualifications

• 3+ years in technical customer-facing or solutions engineering roles.
• Strong foundation in distributed systems and APIs.
• Experience with enterprise auth (SAML/OIDC/OAuth) and SSO.

Responsibilities

• Own deployments from discovery to go-live across enterprise customers.
• Lead technical onboarding for financial institutions.
• Design integrations via APIs, FIX, SFTP, and data feeds.
• Configure identity systems including SSO and credentials.
• Troubleshoot authentication, certificates, and connectivity.
• Map trading workflows and data models to the platform.
• Create onboarding playbooks and tooling.

Skills

3+ years experience

Distributed systems

APIs

Data models

Authentication

Networking

Cloud applications

REST APIs

Webhooks

SSO

SAML

OIDC

OAuth

Job description

Work Style: In-office 4 days, remote 1 day, with periodic customer travel

Employment Type: Full-time

Focus: Financial Infrastructure, Enterprise Integrations, Trading Workflows, Customer Deployment

About Our Client

Our client is building modern infrastructure for the OTC derivatives market — a massive financial market that moves trillions of dollars daily, yet still relies on outdated and fragmented technology.

The company is founded by a small team with deep experience across trading, quantitative finance, and engineering at tier-one financial institutions. They are building a modern, AI-native platform capable of processing some of the most complex transactions across global financial markets.

Their customers include sophisticated banks, hedge funds, asset managers, and other institutional market participants. The problems are highly technical, the scale is massive, and the opportunity is to help define how critical financial infrastructure operates for decades to come.

About the Role

Our client is hiring a Founding Solutions Engineer (customer success engineering) to sit at the intersection of customers, product, and engineering.

This person will own the technical onboarding and deployment of the platform across enterprise financial customers. You’ll work directly with banks, hedge funds, asset managers, client engineering teams, information security teams, trading teams, operations teams, product owners, and senior stakeholders.

This is a deeply technical, highly customer-facing role. It is not traditional customer support or account management. You are responsible for making the technology work, driving customers toward successful production deployment, and turning field learnings into product improvements.

What You’ll Do

• Own customer deployments end-to-end, from discovery and solution design through configuration, testing, launch, and adoption
• Lead technical onboarding for sophisticated financial institutions
• Design and implement integrations across APIs, FIX connectivity, SFTP, file feeds, and other enterprise data exchange patterns
• Configure enterprise identity and access systems, including SSO, authentication, authorization, and credential workflows
• Troubleshoot technologies such as SAML, OIDC, OAuth, certificates, and enterprise identity providers
• Map complex trading workflows and client-specific data models into the platform
• Work with structured financial data across APIs, FIX messages, JSON, XML, CSV, and other formats
• Validate data accuracy, client schemas, business rules, and platform representation
• Diagnose technical issues across application behavior, authentication, networking, connectivity, data, configuration, and client infrastructure
• Write scripts or lightweight tools when needed to solve customer problems
• Coordinate testing, certification, migration, go-live, and post-launch activities
• Build trusted relationships with client engineering, security, operations, and business teams
• Act as a direct feedback loop between customers and product/engineering
• Create documentation, integration patterns, tooling, automation, and reusable onboarding playbooks
• Help every customer deployment become faster, cleaner, and more repeatable than the last

What We’re Looking For

• 3+ years of experience in software engineering, solutions engineering, implementation engineering, technical consulting, or another highly technical customer-facing role
• Strong technical foundation across distributed systems, APIs, data models, authentication, networking, and cloud applications
• Hands‑on experience with REST APIs, webhooks, structured data formats, and data transformation or mapping
• Familiarity with enterprise authentication and authorization technologies such as SAML, OIDC, OAuth, and Single Sign-On
• Ability to independently investigate issues using logs, API requests, network traces, application configuration, and diagnostic tools
• Strong project ownership with the ability to manage multiple workstreams, stakeholders, dependencies, and deadlines
• Excellent communication skills across technical and business audiences
• Strong judgment and problem‑solving skills in ambiguous environments
• Customer‑first mindset with strong engineering discipline
• Comfort working with sophisticated enterprise customers and navigating complex financial institutions
• Willingness to work in person from the NYC office and travel periodically to customer sites

Bonus Experience

• Experience in capital markets, fintech, financial infrastructure, or enterprise financial services
• Familiarity with OTC derivatives, trade capture, post‑trade processing, confirmations, settlements, or trading workflows
• Experience implementing or supporting FIX protocol integrations
• Experience working with banks, hedge funds, asset managers, prime brokers, or institutional market participants
• Experience with SFTP, managed file transfer, VPNs, TLS/mTLS, private connectivity, or enterprise integration patterns
• Experience with identity providers such as Okta, Microsoft Entra ID, Ping Identity, or Auth0
• Familiarity with AWS or other major cloud platforms
• Experience working with databases and querying production data
• Experience building internal tooling or automation to make onboarding and implementation more scalable
• Experience owning enterprise implementations from technical discovery through production launch

Why This Opportunity

• Join an early team building modern infrastructure for one of the largest financial markets in the world
• Work directly with sophisticated banks, hedge funds, asset managers, and enterprise financial institutions
• Own technical deployments that directly impact customer success and revenue
• Solve hard problems across trading workflows, integrations, identity, data mapping, and production readiness
• Partner closely with product and engineering to shape the platform based on real customer needs
• Build repeatable onboarding systems, playbooks, and tooling from the ground up
• Step into a role with high ownership, deep technical complexity, and direct customer impact