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
Fluency provides a digital advertising operating system that allows users to manage digital advertising campaigns across platforms. It was founded in 2017, and is headquartered in Burlington, Vermont, USA, with a workforce of 51-200 employees. Its website is https://www.fluency.inc.