We are looking for a Senior Software Engineer (Backend) to play a key role in developing the technology that powers Knock.com and its supporting platforms. This position is primarily backend-focused but requires strong expertise across the full stack. You will join our distributed team, working remotely from anywhere in the US.
What You'll Do
- Design, develop, and maintain backend services, APIs, and data pipelines that power our customer-facing and internal applications, with occasional frontend contributions to support full-stack delivery.
- Architect and build scalable backend services using Node.js and TypeScript that integrate seamlessly with frontend experiences.
- Own end-to-end delivery of complex integration projects, including third-party lending systems and RESTful/RPC APIs, ensuring robust data synchronization and error handling.
- Contribute to AI-powered features and initiatives, integrating AI services to enhance risk analysis and decision-making capabilities.
- Collaborate with engineers, product managers, designers, and business partners to create innovative, impactful technology solutions.
- Champion best practices in architecture, security, testing, monitoring, and deployment to ensure applications are scalable, secure, and reliable.
- Provide mentorship, share knowledge, and take initiative on technical challenges.
- Join a rotating on-call schedule to help ensure system reliability and rapid response.
What We're Looking For
- At least 5 years of experience building production-grade software.
- At least 3 years writing production-level Node.js code using modern frameworks like Fastify or Express.
- Backend expertise using TypeScript and Node.js with proven ability to design and implement scalable RESTful and/or RPC-style APIs.
- Product-minded engineering approach, comfortable working with ambiguous requirements and making pragmatic scope decisions.
- Ability to contribute to frontend work when needed, comfortable reading and making changes to React/Next.js codebases.
- Database proficiency with solid experience in RDBMS and SQL (MySQL or PostgreSQL), including database design and query optimization.
- Solid understanding of software engineering fundamentals and experience across the full development lifecycle.
- Cloud infrastructure familiarity with at least one major cloud provider (AWS preferred) and hands-on experience with services like ECS, RDS, Lambda, S3, CloudWatch.
- Belief in creating diverse, equitable, and inclusive practices and programs.
- Proven success working 100% remote in prior positions and experience working with a distributed, national team.
Nice to Have
- Experience with GraphQL.
- Experience integrating AI/ML services into production applications, such as LLM integration (OpenAI, Anthropic), prompt engineering, or building features that leverage AI for ranking, scoring, or decision support.
Technical Stack
- Node.js, TypeScript, Fastify, Express
- RESTful APIs, RPC APIs, GraphQL
- React, Next.js
- MySQL, PostgreSQL
- AWS, ECS, RDS, Lambda, S3, CloudWatch
Benefits & Compensation
- Compensation: $156,000 - $185,000 USD
- Top tier medical, dental, & vision benefits starting on the first day of employment.
- Flexible Paid Time Off.
- Paid parental leave: 12 weeks for the birthing parent, 6 weeks for the non-birthing parent.
- $1000 annually for professional development.
- Life, AD&D and Disability insurance.
- 401K (noncontributory by Knock).
- $75 monthly allowance for health & wellness.
- Up to $400 monthly for a co-working space for eligible employees.
- $100 monthly allowance for home internet, mobile phone, or other communication devices.
- $2,500 referral bonus for eligible employees.
Work Mode
This is a fully remote position open to candidates located anywhere in the United States.
Knock provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, gender, gender identity, gender expression, national origin, ancestry, age, physical or medical disability, medical condition, marital status, sexual orientation, genetic information, military and/or veteran status, or any other basis prohibited by applicable US federal, state, or local laws.
