Backend Software Engineer NEW Senior (old)

Jit; Województwo pomorskie; Hybride; PLN 180 000 - 260 000; Plein temps

Résumé du poste

Jit in Poland is seeking a back-end developer to join a mature, self-organised agile team responsible for customer-facing tracking products. You will work on consolidating tracking channels into a single entry point, with event-driven APIs, and collaborate with product owners, frontend developers and architects to deliver features end-to-end.

Requirements include 3+ years of backend development in Python or Scala, 2–3+ years with AWS services, and strong knowledge of PostgreSQL and DynamoDB.

Qualifications

• 3+ years of back-end development experience with Python or Scala.
• 2–3+ years hands-on experience with AWS services (Lambda, API Gateway, SQS, SNS, EventBridge).
• Experience with PostgreSQL and NoSQL databases and data modelling.
• Experience designing RESTful APIs and using Git for version control.
• Familiarity with IaC, CloudFormation, and testing practices.

Responsabilités

• Develop and maintain back-end services and APIs on AWS.
• Build serverless and event-driven features using Lambda, SQS and EventBridge.
• Write clean, tested and maintainable code, and take part in code reviews.
• Work with product owners, front-end developers and architects to deliver features from start to finish.
• Help monitor, troubleshoot and improve services running in production.

Connaissances

Python

Scala

AWS

PostgreSQL

DynamoDB

REST APIs

Git

CloudFormation

English

Outils

AWS Lambda

API Gateway

SQS

SNS

EventBridge

DynamoDB

S3

CloudFormation

Git

Description du poste

Work model : Hybrid - 1 day per week from the Gdańsk office

Why choose this offer?

• You can expect a flexible work organization
• The international work environment will give you the opportunity to interact with the English language on a daily basis
• The Jit community will bring you a nice time during regular integration meetings

Project

Join a mature, self-organised agile team responsible for customer-facing tracking products. The project focuses on consolidating tracking channels into a single customer entry point, introducing new customer notifications and scaling event-driven APIs.

Responsibilities

• Develop and maintain back-end services and APIs on AWS.
• Build serverless and event-driven features using Lambda, SQS and EventBridge.
• Write clean, tested and maintainable code, and take part in code reviews.
• Work with product owners, front-end developers and architects to deliver features from start to finish.
• Help monitor, troubleshoot and improve services running in production.

Expected competences and knowledge

3+ years of back-end development experience with Python or Scala.

2–3+ years of hands‑on experience with AWS services, including Lambda, API Gateway, SQS, SNS, EventBridge (including Pipes), DynamoDB and S3.

Practical experience with relational databases (PostgreSQL) and NoSQL databases (e.g. DynamoDB), including data modelling and query optimisation.

Experience designing and developing RESTful APIs.

Knowledge of good coding practices, unit and integration testing, code reviews and version control (Git).

Experience with Infrastructure as Code, particularly CloudFormation.

Genuine interest in technology and architecture, with an openness to exploring and discussing different solutions.

Good communication skills and the ability to work independently and collaboratively within a team.

Proficiency in written and spoken English.

Nice to have

• Previous Scala experience is a plus. Alternatively, a Kotlin or Java background.
• Observability: Experience with CloudWatch, X‑Ray or similar monitoring tools.
• Understanding of HL IT products and the container shipping business.

Technologies you'll work with

Python

Scala

AWS Lambda

API Gateway

SQS

SNS

EventBridge (including Pipes)

DynamoDB

S3

REST APIs

CloudFormation

Git

Client – why choose this particular client from the Jit portfolio?

Client is one of the global leaders in maritime transport - especially container transport. They currently operates a fleet of over 250 modern container ships that serve customers all over the world, connects more than 600 ports and transports several million containers annually.

Client's IT department is responsible for developing and maintaining internal IT systems that are responsible for planning, monitoring and accounting for the company's core business. The department operates globally within offices in various parts of the world - including, as part of the Gdansk office established in 2020.

About Jit Team

The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams.

Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.