Client Onboarding Specialist

Castleisland; New York (NY); On-site; USD 150,000 - 190,000; Full time

Benefits offered by this job

Monthly wellness credit

Paid lunches

Monthly fitness and evening socials

Annual offsite events

Job summary

Castleisland is looking for a Client Onboarding Specialist to oversee technical implementations for institutional clients in New York. The role entails managing the end-to-end onboarding process, leading technical integrations with APIs, and collaborating with teams to ensure successful deployment.

Ideal candidates will have over 3 years of experience in client onboarding within capital markets. A focus on building strong relationships and ensuring seamless connectivity is essential. The position supports a hybrid work environment and emphasizes a collaborative company culture.

Qualifications

• 3+ years in client onboarding or implementation within capital markets or fintech.
• Proficient in leading stakeholders in structured implementations.
• Ability to manage multiple concurrent implementations.

Responsibilities

• Own end-to-end onboarding for clients and trading counterparties.
• Lead technical integrations with APIs and FIX.
• Partner with various teams to ensure timely implementations.

Skills

Client onboarding experience

Communication skills

Experience with institutional trading systems

SQL knowledge

Familiarity with APIs

Tools

Python

FIX Protocol

REST APIs

Job description

Location

New York

Employment Type

Full time

Location Type

Hybrid

Department

Engineering

Compensation

• $150K – $190K • Offers Equity • Offers Bonus

Talos: Institutional Fabric for Digital Asset Markets

Founded in 2018, Talos provides institutional‑grade trading technology for the global digital asset market, powering many of the major players in the crypto ecosystem. Our mission is clear: to advance the mass adoption of digital assets by seamlessly connecting institutions to the digital asset ecosystem. We are committed to building the most innovative and trusted platform in the world, supporting the entire trading lifecycle.

At Talos, you’ll find an environment that champions kindness and respect, values diverse perspectives, and upholds inclusivity at every turn. We believe every member of our team brings invaluable insights and abilities that drive Talos forward. In our pursuit of excellence, we foster a culture of trust, integrity, collaboration, and mutual growth.

We are a tight‑knit yet globally distributed team of highly experienced engineers and business leaders, with hubs in New York, London, Singapore, and Cyprus. Whether in‑office or remote, you’ll be part of a hybrid‑friendly environment where your unique talents and insights will play a crucial role in building something extraordinary.

Client Onboarding Specialist

Talos is seeking a Client Onboarding Specialist to lead technical implementations and connectivity integrations for institutional clients and trading counterparties.

This role sits at the intersection of client services and technical integration. You will manage end‑to‑end onboarding of exchanges, liquidity providers, and institutional clients onto the Talos platform, ensuring seamless connectivity and successful deployment of our trading infrastructure. This is not a production support role. It is an implementation‑focused position requiring structured project execution, technical fluency, and proactive client leadership.

Responsibilities

• Own the end‑to‑end onboarding process for clients and trading counterparties, from kickoff through successful production deployment.
• Lead technical integrations involving APIs, FIX connectivity, and platform configuration.
• Partner with Sales, Account Management, Engineering, and external stakeholders to deliver implementations on schedule.
• Manage onboarding timelines, track milestones, and communicate progress to internal and external stakeholders.
• Configure and validate client environments across Talos’ modular trading and portfolio systems.
• Troubleshoot integration issues and coordinate resolution with internal engineering teams.
• Develop and maintain onboarding documentation and integration best practices.

Qualifications

• 3+ years of experience in client onboarding or implementation within capital markets or financial technology.
• Strong client‑facing communication skills with the ability to lead stakeholders through structured implementation processes.
• Experience working with institutional trading systems, market connectivity, or financial infrastructure.
• Working knowledge of SQL and command line environments.
• Familiarity with configuration management, source control, and basic scripting (Python preferred).
• Exposure to FIX protocol, REST APIs, and JSON‑based integrations.
• Strong organizational skills and ability to manage multiple concurrent implementations.

Preferred

• Experience onboarding clients to trading, OMS, EMS, or portfolio systems.
• Understanding of capital markets workflows and electronic trading infrastructure.
• Experience coordinating integrations across exchanges, liquidity providers, or institutional counterparties.

Benefits

You will also enjoy a comprehensive array of competitive benefits, regardless of your location, within our warm, welcoming, and ambitious company culture. Our offerings include a monthly wellness credit for personal use, such as gym memberships, massages, or even a ski pass for your next holiday. Additionally, we provide paid lunches in the office, monthly fitness and evening socials to foster connections with colleagues, and annual offsite events to engage with the wider team.

Talos is proud to be an Equal Opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender, gender identity, gender expression, transgender status, sexual stereotypes, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. Talos is committed to providing reasonable accommodations for candidates with disabilities in our recruiting process. If you need any assistance or accommodations due to a disability, please let us know at [e-mail].

© Talos Trading, [e-mail]

Compensation Range: $150K - $190K