Synexus is seeking a Senior Software Engineer to join our expanding team focused on building scalable infrastructure for data pipelines and integrations. As a hands‑on senior engineer, you will partner with data science, product, and product marketing to deliver high‑impact, reliable, end‑to‑end solutions.

Base pay range

$140,000.00 - $170,000.00 per year

Key Responsibilities

• Enhance and maintain our open web crawling system, solving edge cases such as paywalled or obfuscated content to ensure reliable and comprehensive data collection.
• Build and optimize internal tools and infrastructure that empower data scientists and analysts to access and explore large‑scale data with speed and minimal friction.
• Support our transition from batch to real‑time data processing, including the design and implementation of queue‑based pipelines and event‑driven architectures.
• Develop and maintain data integrations with key demand‑side platform (DSP) partners, ensuring reliable and secure data delivery at scale.
• Work across the stack as needed, whether improving backend performance, helping with API design, or optimizing data workflows.
• Develop, improve, and contribute to core engineering practices such as code reviews, testing, observability, and CI/CD to help grow a robust, maintainable codebase.
• Take on a leading role in the team by mentoring more junior SWEs, shepherding projects from ideation to completion, and constantly improving processes.

Essential Experience and Behaviours

• 7+ years of experience building and maintaining production systems.
• Successful experience as a senior/lead engineer in teams before with demonstrated mentoring, project management, and technical leadership skills.
• Excellence in Python, with 5+ years of experience writing clean, maintainable, and well‑tested code.
• Deep experience (3+ years) working with AWS services (e.g., EC2, S3, Lambda, CloudWatch, ECS/Fargate), with a focus on building reliable and scalable infrastructure.
• Excellent understanding of relational databases, particularly PostgreSQL, and experience writing efficient queries and managing schema changes.
• Deep experience with data pipelines or event‑driven architectures, including tools like message queues (e.g., SQS, Kafka, or similar).
• Strong debugging and problem‑solving skills, with the ability to navigate ambiguity and prioritize effectively.
• Deep experience with CI/CD pipelines and version control systems, like Git, to ensure smooth development workflows.
• Excellent communication and collaboration abilities, to work effectively within a small, cross‑functional team.
• Desire to work as part of a remote/virtual team.

Desirable Experience and Behaviours

• Experience working as part of a remote/virtual team.
• Experience building or working with web crawlers, especially at scale or in complex environments (e.g., dynamic or paywalled content).
• Exposure to data engineering or supporting analytics workflows (e.g., building internal APIs, data tooling, or orchestration systems).
• Interest in or experience with ad tech ecosystems or API integrations with external partners.
• Experience using project and task management tools for agile development (e.g., Jira, Asana, etc.).
• Bachelor’s degree in Computer Science, Engineering, or a related field.
• Successful experience working with team members across countries and time zones.
• Comfortable working in rapid response and in on‑call rotations.

What We Offer

• Competitive salary (see above).
• Health, dental, and vision benefits (US‑based team only).
• Flexible working hours and remote options. Full‑time, 1.0 FTE (37.5 per week). Ability to overlap heavily with US Central time hours is essential.
• Professional development opportunities.
• A place to be your authentic self.
• We celebrate diversity and are committed to creating an inclusive environment for all employees.
• Gross pay will be benchmarked to the candidate's primary location.