[Remote] Principal Software Engineer, DSP Integrations

Note: The job is a remote job and is open to candidates in USA. Fluency is a company focused on reshaping digital advertising through innovative solutions and a collaborative workplace culture. They are seeking a Principal Software Engineer, DSP Integrations to lead the architecture and execution of integrations with major Demand-Side Platforms, ensuring seamless operation and technical excellence in their automation platform.

Responsibilities

• Architect Fluency's integrations with major Demand-Side Platforms (currently TTD, Amazon DSP, and Basis; expanding over time)
• Design and own partner API integrations (REST and GraphQL), including authentication, rate limits, retries, idempotency, reporting feeds, and webhook patterns
• Encode platform-specific operational semantics (campaign and ad group structure, targeting, budget behavior, bid strategies, attribution windows, learning-phase triggers) so that Fluency executes correctly on each DSP
• Implement cross-DSP capabilities including blueprint integration, reverse sync and forward mutate patterns, and object authority models
• Partner with DSPs at the engineering level, collaborating with partner-side technical contacts to unblock integration work
• Set technical direction and quality standards through architectural decisions, code, and design reviews, exercising influence rather than formal authority
• Triage and resolve partner-integration defects and client-launch issues affecting campaign execution and reporting accuracy

Skills

• 8+ years of software development experience, with a heavy focus on backend architecture and integration design
• Direct experience integrating with major DSPs as a consumer of their APIs (TTD, Amazon DSP, Basis, MSFT DSP, Yahoo DSP, StackAdapt, or equivalents). Hands-on knowledge of more than one is strongly preferred
• Deep experience working with partner APIs at scale: REST and GraphQL, authentication patterns, rate limits, retries, idempotency, reporting ingestion, and webhook handling
• Practical understanding of DSP operational differences (budgeting, pacing, targeting, bid strategies, reporting), with a track record of encoding those differences correctly in integration logic
• Proven proficiency with Java and Spring Boot, including event-driven services (e.g., Kafka)
• Knowledge of cloud infrastructure (AWS) and experience with distributed systems operating at high data volume
• Distributed systems at walled-garden API volume. You have built high-throughput orchestration on top of partner APIs, with resilience under platform-side instability, and have the discipline to encode platform operational knowledge as structured, testable, continuously-updated capability
• AI-augmented production pipelines. You have built production systems where LLMs, deterministic rules, machine learning models, and purpose-built inference coexist, with work routed to the right layer based on cost, latency, and correctness
• AI-augmented software development. You operate well in an AI-augmented engineering workflow: strong at specification, review, architectural decomposition, and judgment under ambiguity, and able to work productively at higher levels of abstraction
• Comfort with high-volume integration workloads. Fluency operates at $3B+ annualized spend across 250,000+ monthly campaigns
• Strong bias toward ownership and impact in an environment with aggressive deadlines and externally committed delivery dates
• Passion for iterative development and continuous learning

Company Overview