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Leadsource.ai
Source Posted 6 days ago

Tech Lead (Python / API Squad)

AICI/CDDistributed SystemsFastAPIPythonRESTREST APIsDockerGitLabGrafanaKafkaKubernetesMySQLPostgreSQLRedisSentry

The job in short

From the ad's data

Source is hiring: “Tech Lead (Python / API Squad)” (Lead level). Hybrid work, Kaunas. Salary: 5 500–7 500 € per month gross, 27 % above the median for Backend (5 100 € gross). Technologies in the ad: AI, CI/CD, Distributed Systems, FastAPI, Python, REST. The ad is in English and does not ask for Lithuanian. Source currently has 3 open IT positions.

Salary

5 500 – 7 500 €/month

Gross/month · +8 % vs the Lead median

Level

Lead

Usually 7+ years. You lead a team or a technical direction: plan, align with the business and grow people.

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Work mode

Hybrid

Kaunas

What you will do

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What is expected

  • 5+ years of professional Python backend development experience.
  • Experience designing and operating high-traffic REST APIs, including API versioning, backward compatibility and production incident response.
  • Experience working with relational and search databases, such as PostgreSQL and Elasticsearch, including query performance optimisation.
  • Experience leading technical decisions, mentoring engineers and facilitating design reviews — with or without a formal leadership title.
  • Clear communication, pragmatic problem-solving and the ability to navigate changing priorities and collaborate across teams.

Nice to have

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What they offer

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Job description

The ad as published by the employer.

A product within the Source ecosystem that turns real-time public web data into structured datasets for businesses, data teams, and AI developers. Like the other companies across Source, it runs independently while drawing on shared standards and expertise.

The team waiting for you

Our API Squad owns the public and internal APIs that give customers access to Datasets Products' extensive B2B dataset of company, employee and job records. You’ll join a small team of three Python developers as its dedicated Tech Lead, staying hands-on with code while guiding architecture decisions and mentoring engineers — without direct reports. The platform is evolving quickly as we rebuild our billing and credits system, scale event-driven data delivery and develop new ways to package our data. Your challenge will be to keep our high-traffic APIs reliable as they grow, establish clear technical ownership and help the team build systems it can confidently maintain together.

Tech stack

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Is this job ad clear?

Help others: can you tell from the ad what you would do, earn and how hiring works?

About the company

Source

source.ai ↗

Source is hiring for 3 IT positions right now, mostly in Cybersecurity, Backend.

Open roles
3

last 24 days

Salary median
3 200 €

IT median 4 000 € · -20 %

Remote or hybrid
100 %

remote 0 · hybrid 100 · office 0 %

Cities
Vilnius, Kaunas

Technologies in Source's ads

AIProject ManagementCI/CDDistributed SystemsFastAPIPythonRESTREST APIs
Source careers: all jobs 3 →

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