Fullstack API Developer | Online Jobs | Optimhire

Fullstack API Developer

Who we’re looking for

The Intermediate FullStack/API Developer (FS) role is for an experienced software developer

who loves designing and implementing elegant software solutions. The FS contributes their

technical know-how to Micruity’s APIs and the applications that rely on those APIs.

When not busy performing these functions, the FS will contribute to the rest of our product stack

and create new solutions that are clean, stable, scaleable, and ultra-secure. We expect

intermediates to suggest refinements to the technical stack, be able to contribute across the

entire product stack, as well as oversee the integrity of the codebase.

Finally, the ideal candidate should be intimately familiar and up to date with their development

ecosystem – making sound decisions when it comes to choosing the right tool or library for the


What you’ll do

● Support multiple projects, implement refinements to our APIs and full-stack cloud

applications – either independently or as part of a team.

● Take ownership of full-stack feature delivery, from conception and design to coding and


● Help keep API documentation consistent with actuality.

● Ensure the codebase stays stable, readable, and free of technical debt, while building &

improving code across the entire stack.

● Identify opportunities for improvement and make constructive suggestions for change.

● Participate in professional development opportunities including training.

● Provide mentorship to junior team members, participate in design decisions, and

collaborate in technical reviews.

● Occasionally assist with recruitment, e.g. interviewing new team members.

● Help define our engineering culture and build our “dev machine”.


● 4+ years of experience as a professional software developer.

● Expert level familiarity with modern Javascript (ES6) and intimate knowledge of the JS

ecosystem (tooling, libraries, etc.), and writing idiomatic Javascript code.

● Web development knowledge (i.e. HTML, CSS, JS) and REST APIs.

● High level familiarity with one or more front-end frameworks, especially React.

● Understanding of performance implications and scalability of code.

● Experience with large, complex code bases and know how to modify or maintain them.

● Strong familiarity with software fundamentals such as data structures, algorithms, and


● Keenness for writing good, meaningful tests and maintaining thorough test coverage.

● Well developed written and verbal communications skills, including the ability to read,

write, and speak English.

● Ability to legally work in Canada or the US.

Great to have

● B.Sc. degree in Computer Science or related discipline.

● Experience with the AWS ecosystem of products.

● Experience in the Financial Services industry (Defined Contribution Plan administration,

Annuity product design or operations, etc.).

● An entrepreneurial attitude, i.e. willing to roll up their sleeves and solve complex,

all-hands-on-deck problems.

Our Tech Stack

● Javascript codebase: NodeJS, Express.

● React front-end.

● REST, Socket.IO, GraphQL.

● PostgreSQL DB, Sequelize ORM.

● Serverless Infrastructure: AWS–including Lambda, DynamoDB, Step Functions, Cognito,

EventBridge, S3, SQS, and many more.

Job Type



Full-Stack Developers

Must have Skills

  • Node.Js - 4 Years


  • AWS - 4 Years


  • REST - 4 Years


  • AWS Lambda - 4 Years


  • AWS S3 - 2 Years



Eastern Daylight [UTC -4]

Central Daylight [UTC -5]

Mountain Daylight [UTC -6]

Pacific Daylight [UTC -7]


english - Fluent

100 - 130 K/Year USD (Annual salary)

Longterm (Duration)

Fully Remote

United States, Canada

Shannon M

United States