Junior Software Engineer – Flutter, Python

Bloom Future

. Build end-to-end product features across the Flutter app, APIs, and database .

Posted 10/10/2026full-timeHeilbronn • GermanyJunior💰 €45,000 - €50,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates strong expertise in building end-to-end product features using Flutter, Python, and REST APIs, with a focus on improving user experience and system performance. Capable of diagnosing issues across mobile and backend systems while maintaining high-quality standards in code and testing.

Highest-signal resume keywords

Flutter Application DevelopmentPython ProgrammingREST API DesignPostgreSQL Database ManagementAutomated Testing

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

FlutterDartPythonFastAPIPostgreSQLSupabaseREST APIsAutomated TestingCI/CDDocker

Soft Skills

Attention to DetailGood JudgmentInitiativeClear Communication

Tools & Technologies

DockerCloud ServicesWebSockets

Industry Keywords

Mobile DevelopmentUser ExperienceData-Driven ProductsCareer ExplorationExternal Integrations

Tech Stack

Tools & technologies

CloudDartDockerFlutterPostgresPython

About the role

Key responsibilities & impact

Build end-to-end product features across the Flutter app, APIs, and database
Improve interactive career-exploration, profile, and recommendation experiences
Design and maintain APIs, data models, and external integrations
Diagnose problems across mobile, backend, data, and infrastructure
Propose and implement improvements to UX, architecture, reliability, and performance
Write tests, review code, and support the release of production changes
Take features from problem definition through implementation and release
Investigate problems independently and take responsibility for work quality

Requirements

What you’ll need

Strong fundamentals in at least one modern programming language
Evidence that you have built and completed a substantial application or software project
Practical understanding of REST APIs, relational databases, testing, and Git
Strong debugging skills and the ability to understand unfamiliar systems
Attention to product behaviour, usability, and interaction details
Ability to evaluate alternatives and explain your decisions clearly
Initiative, good judgment, and willingness to raise problems early
Good English for technical collaboration
German is a plus
Typically around one to two years of experience
Substantial internship, working-student, open-source, university, or independent project experience may also qualify
Flutter or another mobile framework is nice-to-have
FastAPI or another backend framework is nice-to-have
PostgreSQL or Supabase is nice-to-have
Automated testing, CI/CD, Docker, or cloud deployment is nice-to-have
AI-powered, data-driven or user-facing products is nice-to-have
Mobile: Flutter and Dart
Backend: Python and FastAPI
Data: PostgreSQL and Supabase
Infrastructure: Docker and cloud services
Interfaces: REST APIs, WebSockets, and external integrations

Benefits

Comp & perks

Ownership of work that reaches real users
Influence over both product and technical decisions
Close collaboration and short decision-making paths
Hybrid working at Campus Founders in Heilbronn
A motivated, international team working on a meaningful product
Permanent employment (Unbefristeter Arbeitsvertrag)