International Arbitration Associate (Junior to Mid-Level) — London

A leading international law firm is seeking a junior and/or mid-level associate to join its International Arbitration practice group in London. The role offers the opportunity to work closely with partners, counsel, and colleagues across the firm on high-value, complex international arbitrations, with a strong emphasis on investor-State disputes.

You will assist on all aspects of proceedings, including shaping case theory and strategy, drafting written submissions and procedural communications, preparing for hearings and examinations, managing document production and evidence, and liaising with witnesses, experts, tribunals, and opposing counsel. Depending on seniority, you may also mentor junior colleagues and contribute to business development and pro bono work.

The firm is known for a substantial investor-State track record and represents States, state-owned entities, and private clients in arbitrations under major institutional and ad hoc rules, alongside other public international law proceedings. It offers competitive remuneration, a performance-based annual bonus, a wide range of benefits, ongoing training, and a collaborative, inclusive, and flexible working environment with strong scope to build a profile in international arbitration and public international law.

• Proven post-qualification experience in investor-State arbitration at a law firm, chambers, or arbitral institution
• Strong understanding of the substantive and procedural aspects of investor-State arbitration
• Solid public international law academic background and/or professional experience
• Strong legal drafting skills, with rigour, accuracy, and attention to detail
• Fluency in English essential; fluency in Spanish desirable
• Strong oral communication and advocacy skills
• Strong time-management skills and ability to manage work across multiple cases
• Strong interpersonal skills and commitment to collegiality and diversity
• Right to work in the UK required; visa sponsorship may be considered at the firm's discretion