Full Stack Product Engineer

Ersilia; San Francisco (CA); Remote; USD 180,000 - 320,000; Full time

Job summary

Ersilia is seeking a Senior Full Stack Product Engineer to join a fast-growing engineering team. You will develop an intuitive interface enabling non-technical users to engage with advanced features and drive growth via end-to-end product development.

You will collaborate with customers, designers, and product managers to shape real-world behavior, architect scalable frontend systems, and work alongside ML engineers to surface actionable marketing insights.

Qualifications

• CS, Math, Stats, Physics, or EE undergraduate degree from a top 40 university.
• 2+ years at fast-paced startups (Series A-D) building SaaS products with high engineering bar.
• 5–12 years of software engineering, user-facing and product-centric.
• Proficient in building facing products with backend API design and data models (Typescript + SQL + some Go).
• Experience with customer-facing products and fast feedback loops.
• Strong communication, curiosity, and ability to work in a fast-paced environment.

Responsibilities

• Architect and build features end-to-end for a new generation of marketing and growth products.
• Collaborate with designers, product managers, and customers to understand real-world behavior.
• Work with ML engineers to surface insights for marketers to make confident decisions.

Skills

React

Typescript

Go

SQL

Frontend architecture

Education

CS/Math/Stats/Physics/EE undergrad from top 40

Tools

Go

SQL

Job description

Job Description

Full Stack Product Engineer

Role details:

Salary: $180K - $320K

Remote work policy: Remote (North America)

Full-time position

Location: Remote (US or Canada)

Equity: ISO options

Visa sponsorship details: Open to visa transfers(e.g. OPT, H1B transfers)

Additional visa sponsorship details: Can sponsor H1B transfer, TN, O-1, etc.

Hiring Count: Looking to hire6 candidatesfor this role

Tech stack: React, Typescript, Go

About this role

We’re seeking full-stack engineers to join our fast-growing engineering team, where you’ll help develop an intuitive interface that enables non-technical users to easily engage with advanced features.

On a typical day, you will be:

• Architecting and building features end-to-end for a new generation of marketing and growth products
• Collaborating closely with customers and cross-functional partners - designers, product managers - to understand real-world behavior
• Working alongside ML engineers to surface insights that empower marketers to make confident decisions.

Looking ahead, AI and machine learning will be the foundation of a new operational paradigm in marketing. Some of the most interesting upcoming challenges for this team include:

• Building a deep analytics and observability platform to surface key marketing insights
• Integrating complex ML models into a highly interactive user interface
• Crafting intuitive interfaces for marketing and growth team to set up complex experiments

Our ideal engineer is someone who has proven experience working closely with product teams to build user interfaces from zero to one. You should be able to independently lead and architect complex frontend systems, and be proficient in building CRUD applications and with a solid understanding of backend API design and data models.

Requirements

Dealbreaker

Work experience

• Must have: Clear trajectory of growth in previous roles (hired from internships, ownership & promotions, etc.).
• Must have: 2+ years of tenure at a fast-paced startups (series A-D) building SaaS products with high bar for engineering.

Baseline

Seniority

• Required: Senior leveling minimum
• Required: 5 - 12 years of experience in software engineering, should be user facing and product centric

Work experience

• Required: Fullstack engineer (i.e. API design, database migration, quality frontend UIs, table design, general SQL knowledge)
• Required: Experience working with customer-facing products, used to fast feedback loops.

Education

• Required: CS, Math, Stats, Physics, or EE undergraduate degree from a top 40 university

Hard skills

• Required: Proficient in building using facing products and with a solid understanding of backend API design and data models (Typescript + SQL + some Go)

Soft skills

• Required: Strong communication, curiosity, ability to work in a fast pace environment, high aptitude

Nice-to-have

Hard skills

• Required: Able to independently lead and architect complex frontend systems