App Description
At
SUMIFAI
, we're building an AI app that helps millions of people around the world analyze, visualize, and understand their data instantly,
without needing technical skills or coding.
From raw
Excel and Google Sheets
to
interactive geographical maps and instant business insights
, SUMIFAI transforms static spreadsheets into living dashboards. Our AI assistant
generates formulas, visualizations, and insights automatically
, making data-driven decisions with clarity and confidence.
SUMIFAI is an
AI startup in its MVP stage
,
pre-revenue
, and
currently fundraising
to accelerate development and scale globally. This is a great opportunity to
join early as a co-founder or core team member
and shape the future of AI-driven data tools from the ground up.
As Co-Founding Data Engineer, you'll:
Design and maintain the data backbone
* Architect and optimize
AWS RDS (PostgreSQL)
for scalable analytics
* Manage schema migrations with
Drizzle ORM
* Define efficient data pipelines for uploads, transformations, and exports
Develop and scale AI-powered analysis pipelines
* Integrate
LLM-based AI features
(formula generation, visualization suggestion, data summarization)
* Implement
RAG (Retrieval-Augmented Generation)
workflows to enhance contextual AI responses
* Develop API endpoints for AI query handling
Optimize cloud infrastructure
* Manage EC2, S3, IAM, and ALB configuration for security and scalability
* Improve
CI/CD pipelines
and monitoring tools
* Implement
data caching and cost optimization
strategies
Collaborate on product and UX decisions
* Work closely with the founder, front-end engineer, and UI designer
* Translate user workflows into technical solutions
* Drive product improvement through metrics and data feedback loops
Build for growth & fundraising readiness
* Prepare clean, documented code for investor demos and scale tests
Main Qualifications:
* Strong knowledge of JavaScript or TypeScript and experience building backends with
* Deep understanding of
PostgreSQL
(schema design, indexing, query optimization)
* Familiarity with
ORM tools
such as
Drizzle ORM
or
Prisma
* Solid grasp of
AWS architecture
including
EC2, RDS, S3, IAM, and ALB
* Ability to design and maintain
secure, scalable backend setups
* Experience with
API design and integration
(REST or GraphQL)
* Familiarity with
AI/LLM APIs
such as
OpenAI
,
Anthropic Claude
, or
Amazon Bedrock
* Capability to build
data pipelines
for uploading, transforming, and analyzing structured datasets
* Understanding of
CI/CD workflows
(e.g., GitHub Actions) and
version control
with Git
Nice to Have Qualifications:
* Understanding of
Retrieval-Augmented Generation (RAG)
or vector search (e.g., Pinecone, FAISS, pgvector)
* Familiarity with
data visualization workflows
or libraries,, or Plotly)
* Experience working with
spreadsheet formats
(Excel/CSV parsing, SheetJS, XLSX libraries)
* Knowledge of
DevOps practices
(monitoring, logging, scaling with ASG or ECS)
* Experience deploying full-stack apps with
React /
* Understanding of
AI prompt engineering
and integrating large language models into apps
If you're excited by the idea of building an AI-powered data product from the ground up and want to be part of a founding team shaping the future of data analysis, we'd love to hear from you.
At
SUMIFAI
, you'll have the freedom to create, the opportunity to grow, and the chance to make a real impact on how the world works with data.
Get in touch:
Let's make data simple, beautiful, and human. Together.