Senior Backend/Full-stack Developer
$100k - $150k per yearMartell Media
On-Target Earnings: $100,000 - $150,000 CAD
Location : Remote
About SocialSweep
SocialSweep is the search engine for your network. We turn fragmented relationship data across platforms into a unified, intelligent search experience. By combining structured data, AI-generated insights, and hybrid search (semantic + lexical), we help users instantly surface the right people, opportunities, and connections.
Why you shouldn't work here – Radical Transparency from our CEO
What Applying Looks Like
We keep it transparent and efficient. Here's what to expect:
- 1-min intro video (Loom, Vidyard, or Google Drive – share your link below)
- Application review
- 15-minute intro call
- Strengths assessment – how you learn and do
- Hiring Manager interview – values and culture fit
- Paid test project – work with us, like you're already on the team
- Final call with our CEO
- Offer – if we're both excited, we move forward fast
What You'll Work On
You'll be a core engineer building and scaling our AI-powered search platform. Our system ingests relationship data, enriches it with AI, and enables fast, high-relevance retrieval using a hybrid BM25 + vector search approach.
Core System Flow
Ingest and normalize data from multiple integrated systems
Enrich connections with AI-generated summaries
Generate embeddings from summaries using OpenAI
Store vectors in Weaviate
Execute hybrid search (BM25 + semantic, weighted ~0.75 semantic)
Interpret user queries (intent detection, inclusive vs exclusive filters)
Run vector search → hydrate results via Postgres
Return ranked, explainable results to the user
Responsibilities
Design and implement scalable backend services using Node.js, Express, and TypeORM
Build and optimize hybrid search pipelines using Weaviate
Implement AI workflows using OpenAI (summarization, embeddings, query interpretation)
Develop query-understanding and intent-parsing logic
Optimize relevance, ranking, and performance of search results
Build and maintain APIs consumed by an Angular frontend
Work with PostgreSQL for transactional and relational data
Deploy and operate services within the GCP ecosystem
Collaborate closely with product to iterate quickly on search quality and UX
Tech Stack
Frontend: Angular
Backend: Node.js, Express
ORM: TypeORM
Database: PostgreSQL
Search / Vector DB: Weaviate
AI: OpenAI (summaries, embeddings, query interpretation)
Cloud: Google Cloud Platform (GCP)
What We're Looking For
- 5+ years of experience as a backend or full-stack engineer
- Strong proficiency in Node.js and API design
- Experience with search systems, ranking, or information retrieval
- Hands-on experience with vector databases or semantic search
- Solid understanding of relational databases and query optimization
- Familiarity with GCP services (Cloud Run, GKE, Pub/Sub, BigQuery, etc.)
- Comfortable working in fast-moving, early-stage startup environments
- Strong systems thinking and ability to reason about tradeoffs in search relevance
Nice to Have
Experience with hybrid search (BM25 + vector)
Background in NLP, ML, or AI-powered products
Experience interpreting natural-language queries
Prior work on developer platforms, CRMs, or data aggregation products
Vacancy posted 7 days ago
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