Full Stack Software Engineer

At 1oT, we're making global IoT connectivity simpler to build and operate.


Our client portfolio ranges from e-mobility to asset tracking to smart city solutions, so you will have interaction with a variety of IoT sectors and telecom companies.


1oT eSIM Core is our platform for mobile operators and eSIM service providers. They use it to manage eSIM profile inventory, downloads, analytics, and administration.


1oT is looking for a full stack engineer to join our Tallinn HQ to build, scale, and maintain our eSIM core platform.

Number of vacancies

1

Deadline for applying

01.12.2026

Job location

Tallinn, Estonia

Work assignments

What you’ll do

  • Develop large-scale services (Java / REST / Spring / SQL)
  • Shape front-end development and build user interfaces for the eSIM core application (Vue.js)
  • Run and maintain AWS services (Terraform / Docker / Grafana)
  • Participate in discussions on the architecture of the platform
  • Build eSIM infrastructure according to GSMA specs
  • Handle external integrations via APIs

Work experience

What you'll bring:  

  • Solid experience with FE , Typescript based - at least 2 years of direct experience in FE during the last 4 years. In FE you should be capable of spotting problems and eager to optimize performance without sacrificing security and maintainability
  • BE development experience is a must (Java experience strongly preferred), 2 years of meaningful work on backend during last 4 years
  • You know how to work with relational database layer
  • Readiness to participate in support rotation is a must
  • Desire and hunger to build solutions that do not yet have analogs in the market
  • Problem solver & get things done attitude (no place for corporate mindset)
  • Great self-management skills (dates, goals & responsibilities – you yourself are on top of your things, micromanagement is not in our DNA)
  • Experience with building and working with different APIs
  • You are located in Tallinn, Estonia



Bonus points:

  • Previous participation in UI tests development 
  • Experience of working with IaC (Terraform)
  • AWS, GCP, Azure experience

Language skills

English

Company/organization offers

We offer you:

  • Meaningful work with global impact while working on an exciting project
  • Variety of tasks, from implementing new functionalities to optimizing and refactoring existing solutions
  • Opportunity to have a great say and lots of personal growth at a growing and sustainable company having paying clients
  • Cozy and productive work environment at our TallinnHQ
  • Ambitious team members who do not settle for status quo and are eager to improve our services on a daily basis
  • Fun team & great vibes
Information Technology
  • Video link: https://youtu.be/IHYiTNOcvc4
  • Benefits/salary details:
    • Sports and wellness compensation
    • Paid health days
    • Paid reservist training leave
    • Company mobile plan
    • Employee referral bonus
    • Team events and company celebrations
  • Work time: Full time work
  • Workload: 1
Apply Now