Senior Backend Engineer – Search Features, APIs

Constructor

. Own the design and delivery of features and components in the team's services .

Posted 11/12/2026full-timeRemote • United StatesSenior💰 $80,000 - $120,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and delivering backend services, with a strong focus on public API development, performance optimization, and observability. Proven ability to mentor engineers and lead incident response while collaborating with cross-functional teams to meet customer needs.

Highest-signal resume keywords

Extensive Python KnowledgeExperience With AWSDesigning And Evolving Public APIsObservability Including Metrics, Logs, And TracesExperience Debugging Performance Issues

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Backend Services DevelopmentPublic API DesignPerformance OptimizationService-Oriented ArchitectureDebugging Live SystemsMetrics CollectionLog AnalysisTrace AnalysisIncident ResponseProject Delivery

Soft Skills

Clear Written CommunicationGood Judgment About Trade-OffsComfort With Ambiguity

Industry Keywords

High-Traffic ServicesLow-Latency ServicesSearchRankingInformation RetrievalE-Commerce Product DiscoveryAI/LLM-Facing Infrastructure

Tech Stack

Tools & technologies

AWSPython

About the role

Key responsibilities & impact

Own the design and delivery of features and components in the team's services
Design and evolve public API endpoints with backward compatibility in mind
Contribute to architecture discussions
Improve performance and reliability by identifying latency and failure hotspots, adding observability, and fixing issues
Participate actively in design and code reviews
Mentor mid-level engineers
Work with product, solutions/support, and other engineering teams to understand customer needs and develop technical solutions
Participate in on-call for owned systems
Lead incident response and follow-through when systems fail

Requirements

What you’ll need

Solid experience building and operating backend services in production, ideally high-traffic or low-latency services
Extensive Python knowledge
Hands-on experience with observability, including metrics, logs, and traces
Experience debugging performance issues in live systems
Experience designing and evolving public APIs used by external customers
Experience designing and implementing scalable service-oriented architectures
Track record of delivering projects end to end, including leading small efforts with other engineers
Clear written communication for design docs, RFCs, and postmortems
Good judgment about trade-offs and scope
Comfort with ambiguity and loosely defined problems
Ownership extending to system behavior in production
Experience with AWS
Background in search, ranking, information retrieval, or e-commerce product discovery
Exposure to AI/LLM-facing infrastructure such as MCP or agent tooling

Benefits

Comp & perks

Unlimited vacation time; employees strongly encouraged to take at least 3 weeks per year
Fully remote work; choose where you live
Work from home stipend
Apple laptops provided for new employees
Training and development budget for every employee, refreshed each year
Maternity and paternity leave for qualified employees
Stock options offered in addition to base salary
Regular team offsites
Opportunity to work with smart people and make a meaningful impact