Senior

Spike Posted 54 days ago

Senior Backend API Engineer

IoT

Microservices

Object-Oriented Programming

AWS

The job in short

From the ad's data

Spike is hiring: “Senior Backend API Engineer” (Senior level). Location: Vilnius. Salary: 4 500–8 000 € per month gross, 23 % above the median for Backend (5 100 € gross). Technologies in the ad: AI, Go, IoT, Microservices, Object-Oriented Programming, Python. The ad is in English and does not ask for Lithuanian. Spike currently has 3 open IT positions.

Salary

4 500 – 8 000 €/month

Gross/month · +25 % vs the Senior median

Level

Senior

5+ years of experience. You own decisions, architecture and quality, mentor others and see the business context.

Work mode

On-site

Vilnius

What you will do

Contribute to the development of scalable backend systems
Implement a large variety of data sources
Build supporting microservices
Work with messaging/queuing systems
Maintain and optimize existing systems
Contribute to the design and implementation of new data engineering features
Work with the data engineering team on bridging the Spike ETL product and backend / UI
Work with the data team to generate custom metrics for system security, usability and visibility for clients
Work with the data team on the infra components for the Spike Generative AI product

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What is expected

5+ years of experience in backend software development
Advanced knowledge of one or more object-oriented programming languages. For the reference, our tech stack is as follows: AWS, Python, Golang, Typescript, Kubernetes, Postgres
Experience working with messaging/queuing systems
Working knowledge of relational databases

What they offer

Competitive salary in the range of 4,500 to 8,000 eur gross (and more in exceptional cases) per month depending on your qualifications.
Annual bonus.
Hybrid working model (offices in Vilnius, Lithuania and Palo Alto, CA)
Personal health fund, optical allowance, referral bonus, team events.
Dynamic growth: dive into AI and Data tech, seizing high-growth opportunities with cutting-edge projects.
Talented peers: collaborate with a smart, ambitious team comprising data scientists, PhDs, Cambridge alumni, and tech industry pros (formerly from Bloomberg, Amazon, and Google).
Solid backing: enjoy stability and ample resources for success, supported by market leader Raintree.
At Spike Technologies, diversity is celebrated, and inclusion is our priority. We welcome applicants from all backgrounds to join our innovative team and contribute to our inclusive culture.
Sounds like you? Let's talk.

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Job description

The ad as published by the employer.

Spike Technologies Inc. is hyper growth B2B Agentic AI and health data startup founded in 2022, split between San Francisco, California, and Vilnius, Lithuania. The company serves a diverse client base across healthcare, government, digital health and health insurance sector.

In July 2026 Spike Technologies was acquired by Raintree, leading EMR platform in US rehab industry.

Spike Technologies is looking for an experienced backend developer to join our team in building cutting-edge Data Engineering and Generative AI technology. In this role, you will be responsible for the development of scalable systems that serve our enterprise clients in the HealthTech industry. You'll be working with billions of proprietary data points derived from Wearables, IoT devices, other sensors and will be building microservices infrastructure to deliver this structured data feed and GenAI insights for our clients near-real-time.

Good to have

Experience with Kubernetes and Docker
Experience with AWS or other cloud provider
Experience with systems design
Experience in MLOps
Ability to move fast as it's part of Spike's culture

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Aktyvus Open for 126 more days

Salary

4 500 – 8 000 €/month

Gross, before taxes

+25 % vs Senior median 5 000 €

Top 15 %

Compared with 257 Senior level jobs

Net ≈ 2 723–4 787 €/month. From 6 250 €: social security (Sodra) −1 219 € (19.5 %), income tax (GPM) −1 250 € = 3 781 €. Lithuanian taxes 2026, without the 2nd pension pillar.

Compared with the median +23 %+25 % 7

Whole IT market817 jobs · 4 050 €+54 %
Backend105 jobs · 5 100 €+23 %
Senior level257 jobs · 5 000 €+25 %
Vilnius644 jobs · 4 050 €+55 %
AI203 jobs · 4 550 €+37 %
Python145 jobs · 4 500 €+39 %
Kubernetes93 jobs · 5 100 €+23 %

IT median +1,3 % per week

Based on 817 active IT jobs with a gross salary on aplikuok.lt, €/month, middle of the range.

Area

Backend

Level

Senior

Work mode

On-site

City

Vilnius

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All company jobs

Source: Unicorns.lt

Open until 2027-02-23

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About the company

Spike

Spike is hiring for 3 IT positions right now, mostly in Backend, Data and AI.

Open roles: 3
Salary median: 6 250 €
Remote or hybrid: 0 %
Cities: Vilnius

Technologies in Spike's ads

WebSockets

IoT

Microservices

Object-Oriented Programming

Python

TypeScript

Spike careers: all jobs 3 →

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