Senior backend engineer

Job Title: Senior Backend Engineer

About Blossom Social: Blossom Social is building the future of social investing. Our platform empowers retail investors by combining the best of social networks with investing tools - enabling users to connect, learn, and grow their financial confidence together. Join us to discover new investment ideas, manage your stock portfolio, grow your knowledge with Blossom Learn, and earn rewards while learning about new stocks.

Our mission is to empower the world to make better financial decisions, building an inclusive community for everyone to learn and take control of their finances together.

Position Summary: As a Senior Backend Engineer at Blossom, you will take a pivotal role in scaling our services to handle tenfold user growth within an aggressive timeline. You will architect and implement backend solutions that ensure scalability, performance, and reliability. This role demands a proactive approach to system expansion, optimization, and strategic foresight in infrastructure planning.

Key Responsibilities:

Lead the development and scaling of high-volume, low-latency backend services to support our growing user base and data throughput. Own end-to-end delivery of critical backend initiatives - from design and implementation to production rollout and monitoring. Architect robust, scalable systems within our event-driven microservices architecture on AWS serverless (Lambda, Dynamo DB, SQS, API Gateway). Ensure system reliability, efficiency, and redundancy, including disaster recovery strategies and data integrity. Collaborate with cross-functional teams to align backend features with user demands and overall business goals. Mentor junior developers and lead by example in coding, process refinement, and architectural decisions. Optimize existing systems for maximum speed and scalability through rigorous testing and profiling. Build with security best practices and partner with our Dev Sec Ops lead on reviews and compliance.

Required Skills & Qualifications:

Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field. 4+ years of experience in backend development, with a proven track record in scalable systems. Expertise in programming languages such as Python, Java, or Go. Extensive experience with AWS serverless architectures (Lambda, Dynamo DB, SQS/event-driven patterns). Understanding of CI/CD pipelines and Dev Ops practices. Strong database management skills with both SQL and No SQL databases. Excellent problem-solving, analytical skills, and the ability to perform well in a fast-paced environment. Prior experience with financial services applications or social networking platforms will be a significant plus.

What We Value:

At Blossom, we value ownership, curiosity, and collaboration. We are a small, fast-moving team where everyone's voice matters. If you're passionate about building technology that truly empowers people and you thrive in an environment of rapid iteration and learning, we'd love to hear from you.